Power supplies / Compare

CORSAIR RM1000x SHIFT (2025) vs Super Flower Zillion FP 1000W

A

Product A: CORSAIR

RM1000x SHIFT (2025)

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B

Product B: Super Flower

Zillion FP 1000W

43 of 66 known

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Only differences

ACORSAIR RM1000x SHIFT (2025)

BSuper Flower Zillion FP 1000W

General

4 of 12 differ

Series

RMx SHIFT1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Product title: RM1000x SHIFT. The maker calls the line RMx SHIFT. The page is the second generation (SKU CP-9020300-NA, model RPS0222), not the 2022 RM1000x SHIFT (CP-9020253).

Zillion1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Title: Super Flower Zillion FP 1000W. The Zillion name is the product line and FP is the Platinum model suffix of the code Z12FP.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

CP-9020300-NA, CP-9020300-EU, CP-9020300-UK1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026SKU CP-9020300-NA. The power table prints model RPS0222 and part no. 75-006528, which are not stored as model numbers.9Retailer pageamazon.com/dp/B0FPG9K6ZDRead 15 October 2026Item details: Model Number CP-9020300-NA.10Retailer pagepood.datafox.ee/corsair-2025-rmx-shift-srs-rm1000x-psuRead 15 October 2026Product code CP-9020300-EU.11Retailer pagescan.co.uk/products/1000w-corsair-rm1000x-shift-fully-modular-cybenetics-gold-pcie-51-single-rail-833a-140mm-fanRead 15 October 2026Scan lists CP-9020300-UK.

SF-1000Z12FP1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Item details: Model Name SF-1000Z12FP. The listing is for the Super Flower Store on Amazon US and has size options 850, 1000 and 1200 Watts under the Zillion FP name.

GTIN / EAN

840440483007, 840440485056, 8404404830219Retailer pageamazon.com/dp/B0FPG9K6ZDRead 15 October 2026Item details: UPC 840440483007 and Mfr Part Number CP-9020300-NA. The check digit is valid.10Retailer pagepood.datafox.ee/corsair-2025-rmx-shift-srs-rm1000x-psuRead 15 October 2026Datafox (Estonia) lists EAN 840440485056 for CP-9020300-EU. Comparateur-gamer.fr (France) lists the same EAN and part number. The check digit is valid.11Retailer pagescan.co.uk/products/1000w-corsair-rm1000x-shift-fully-modular-cybenetics-gold-pcie-51-single-rail-833a-140mm-fanRead 15 October 2026Scan lists manufacturer code CP-9020300-UK with GTIN 840440483021. The check digit is valid. This is the only source for the UK code.

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AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

4 November 20253Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Press release dated November 4, 2025.

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Status

Available1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Page shows In Stock, with a price of $169.99 against an original price of $209.99.

Available1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Amazon US listing for the 1000W with a best seller rank in Computer Power Supplies. Super Flower's own site lists no Zillion FP page, so no maker page was found.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

Not available

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€204.94Press articlepcgameshardware.de/Netzteil-Hardware-219902/News/Corsait-RMx-Shift-Gen-2-1485838Read 15 October 2026PCGH names a launch UVP of 204,90 euros for the RM1000x Shift (169,90 euros for the RM850x and 154,90 euros for the RM750x). The archived Corsair German page shows the same 204,90 EUR including VAT. No US dollar launch price is stored, because the archived Corsair US page shows $229.99 on 2025-11-05, Hardware Busters gives an MSRP of $210 excluding VAT and the current Corsair US page prints an original price of $209.99.5Maker product pageweb.archive.org/web/20251119233232/https://www.corsair.com/de/de/p/psu/cp-9020300-eu/rm1000x-shift-fully-modular-atx-power-supply-eu-cp-9020300-euRead 15 October 2026Archived copy of the Corsair German page for CP-9020300-EU from 2025-11-19, two weeks after launch. It shows a price of 204,90 EUR with no discount, including VAT, and a backorder notice.

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MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

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ColoursiThe maker's own colour names

Black1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026The product is the black unit. Amazon US titles it Black.9Retailer pageamazon.com/dp/B0FPG9K6ZDRead 15 October 2026Title: CORSAIR RM1000x Shift ATX 3.1 PCIe 5.1 Ready 1000W Power Supply - Black, 2025, NA.

Black1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Title: Black Version.

Form factoriThe physical size standard that decides what fits in the case. An ATX unit is 150 × 86 mm at the back. An SFX unit is 125 × 63.5 mm.

ATX1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Dimensions 160mm x 150mm x 86mm. The back face is 150 x 86 mm, the standard ATX size.

ATX1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Item details: Form Factor ATX, Output Wattage 1000 watts.

ATX versioniThe ATX12V design guide revision the maker claims compliance with. A 16-pin GPU cable alone does not establish ATX 3.x. A Cybenetics report that withholds its ATX badge does not change the maker's claim. It goes in the source note.

ATX 3.11Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: ATX 3.1-certified and PCIe 5.1 compliant. Tech Specs: ATX12V Version 3.1.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Meeting ATX 3.1 and PCIe 5.1 standards.

ATX 3.11Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026About this item: Compliant with the ATX 3.1 standard. The product label also carries an ATX 3.1 Ready mark.2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Temperature and Compliance Info: ATX v3.1 PSU Power Excursion checked.

PCIe CEM versioniThe PCI Express card power revision the maker claims, as printed next to the ATX version. It sets the GPU power connector rules. It is not a slot speed. A reviewer's statement is not enough.

PCIe 5.11Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: ATX 3.1-certified and PCIe 5.1 compliant.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Meeting ATX 3.1 and PCIe 5.1 standards.

PCIe 5.11Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026About this item: PCIe 5.1-ready. The title also says ATX 3.1 / PCIe 5.1 with a native 12V-2x6 cable.

Modular cablesiFull means every cable detaches. Semi means some cables are fixed, usually the 24-pin and CPU cables.

Fully modular1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: Fully modular, Type-5 connectors.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Fully modular, so builders can use only the cables they need.

Fully modular1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026About this item: Fully modular design.

Built by (OEM)iThe company that designed and built the unit for the brand, such as CWT or FSP. As named by the maker, a teardown review or a Cybenetics report.

Great Wall6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026DUT Information: OEM/ODM Great Wall. Parts description: Manufacturer (OEM) Great Wall.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Manufacturer (OEM) Great Wall.

Zhong Yuan2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026DUT Information: OEM/ODM Zhong Yuan. Parts description: Manufacturer (OEM) Zhong Yuan. The report names the unit Zillion 1000W with no model code. See the match note on cybenetics_efficiency_115v.

Power

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Rated continuous poweriThe continuous DC output the maker rates the unit for, such as 850. Peak or power excursion figures are not stored here.

1,000W1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Continuous Power W 1000 Watts and Total Power 1000W.

1,000W1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Item details: Output Wattage 1000 watts.

Full power rated up toiThe ambient temperature up to which the maker rates full continuous power, such as 50 °C. A review table that prints 0-50 °C with no maker source is not enough. An operating temperature range that does not say full power is not enough. A maker table with load steps gives the full-load row, such as 40 °C at full load next to 50 °C at 80 percent load. A temperature that a Cybenetics report marks as manufacturer-provided counts as a maker statement.

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12V rail designiHow the maker splits +12V over-current protection. Switchable means the user picks single or multi rail with a switch or in software.

Single rail6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Power Specifications: one +12V column with 83.3 A and 1000 W.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Number of 12V rails 1.

Single rail2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Power Specifications lists one +12V column at 83.3 A and the protection list has one Over Current (+12V) row, so the unit is single rail. The report does not use the word single.

+12V max currentiHighest combined current on +12V from the maker's power table. For a multi-rail unit this is the combined total, not one rail.

83.3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Power table: +12V 83.3A, 1000W.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x power table, model RPS0222, part no. 75-006528: +12V 83.3A, 1000W.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Power Specifications table: +12V 83.3 A, 1000 W.

83.3A2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Power Specifications: +12V 83.3 A. This is the rating printed in the Cybenetics report from the unit's label and not a maker document.

+12V max poweriHighest combined power on +12V from the maker's power table.

1,000W1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Power table: +12V 83.3A with 1000W listed beside the row. The Cybenetics report also prints 1000 W for +12V.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x power table: +12V 83.3A, 1000W.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Power Specifications table: +12V 1000 W.

999.6W2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Power Specifications: +12V 999.6 W, total max power 1000 W.

+3.3V and +5V combined poweriThe combined limit for the +3.3V and +5V rails from the maker's power table. A table that prints the same figure under both rails, as be quiet! does, shows one shared limit, so the figure is stored once and not added.

120W1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Power table: +3.3V 20A and +5V 20A with one 120W cell. The page layout does not tie the 120W to one rail. The Cybenetics report and Hardware Busters print it as the combined +3.3V and +5V power.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x power table: +3.3V 20A, +5V 20A and one 120W cell.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Power Specifications table: one merged 120 W cell for 3.3V and 5V, 20 A each.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Power 5V + 3.3V 120W.

100W2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Power Specifications: +3.3V 20 A and +5V 20 A with one 100 W combined cell.

+5V standby currentiHighest current on the +5VSB standby rail. It powers USB charging and wake functions while the PC is off.

3A1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Power table: +5VSB 3A, 15W.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x power table: +5Vsb 3A, 15W.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Power Specifications table: 5VSB 3 A, 15 W.

3A2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Power Specifications: +5VSB 3 A, 15 W.

AC input voltageiThe rated AC input range, such as 100 to 240 V.

Lowest100Highest240V1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Power table: AC input 100V-240V, input current 12A-6.5A, 47Hz-63Hz. A 200V-240V, 10A rating applies to Korea and India only.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x power table: AC input 100V-240V a.c., input current 12A-6A, 47Hz-63Hz.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Manufacturer-provided information: 100-240 Vrms, 6-12 A, 47-63 Hz.

Lowest100Highest240V2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026DUT Information: rated voltage 100-240 Vrms, rated current 6-12 Arms, 50-60 Hz. The rear panel label also reads 100-240V.

Alternative low power mode (ALPM)iThe maker or a Cybenetics report states support for the ATX alternative low power mode used by Modern Standby.

Yes1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Modern Standby Yes. The Cybenetics report ticks ALPM compatible.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is checked.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Alternative Low Power Mode support yes.

Yes2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked.

Certifications

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80 PLUS ratingiThe 80 PLUS level. When the 80 PLUS listing or certificate and the maker claim differ, store the listing level and put the claim and test voltage in the source note. When a model has several 80 PLUS entries, such as a newer test at a higher level, use the newest entry that matches the current maker documents.

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Cybenetics efficiency at 115ViThe Cybenetics ETA level from the 115V test. The Cybenetics report wins over the maker's claim.

Cybenetics Platinum6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Report 25PS2873, lab ID CR10002873, sample serial A9H2D5183001EI, received Jun 13, 2025, tested Jul 3, 2025, issued Jul 10, 2025. The model name is RM1000x Shift (ATX v3.1). The Cybenetics database shows ETA Platinum at 115V. Corsair advertises Cybenetics Gold without a voltage, and Hardware Busters says Corsair used a lower badge on purpose. The report wins.

Cybenetics Platinum2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Report issued Sep 9, 2025, Lab ID SF10002951. The ETA level is Platinum at 115V in the Cybenetics performance database. The report names the unit Zillion 1000W and does not print the model code SF-1000Z12FP. It is matched to the Zillion FP 1000W by brand, wattage, Cybenetics Platinum level, 120mm FDB fan, semi-passive mode and 12V-2x6 cable, since the Zillion line has no other ATX 1000W model. It was tested in September 2025, before the FP name appeared at retailers.

Cybenetics efficiency at 230ViThe Cybenetics ETA level from the 230V test. The 230V thresholds are higher, so the level can differ from the 115V level. The Cybenetics report wins over the maker's claim.

Cybenetics Platinum6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026The Cybenetics database shows ETA Platinum at 230V.

Cybenetics Platinum2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026The ETA level is Platinum at 230V in the Cybenetics performance database.

Cybenetics noise at 115ViThe Cybenetics LAMBDA level from the 115V test. A++ is the quietest. The Cybenetics report wins over the maker's claim.

A6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026LAMBDA A at 115V in the Cybenetics database. Corsair's page prints Cybenetics Noise A.

A-2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026The LAMBDA level is A- at 115V in the Cybenetics performance database.

Cybenetics noise at 230ViThe Cybenetics LAMBDA level from the 230V test. The Cybenetics report wins over the maker's claim.

A+6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026LAMBDA A+ at 230V in the Cybenetics database.

A-2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026The LAMBDA level is A- at 230V in the Cybenetics performance database.

Measured

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Average efficiency at 115V (measured)iAverage efficiency over the whole load range at 115V input, from more than 1450 load combinations in the Cybenetics method. It is not the peak efficiency or the efficiency at 50% load.

89.891%6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Average over more than 1450 load combinations at 115V, ambient 28-32 C. At 230V it is 91.777%.

90.231%2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Average over more than 1450 load combinations at 115V. Tested Sep 2, 2025, received Aug 21, 2025. The sample serial number is not printed. Ambient 28-32 C.

Average efficiency at 230V (measured)iThe same average efficiency at 230V input.

91.777%6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Average over more than 1450 load combinations at 230V.

91.951%2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Average over more than 1450 load combinations at 230V.

Light-load efficiency at 115V (measured)iEfficiency at a 10 W load for units up to 500 W, or at a 2% load for larger units, at 115V input. This is the ATX light-load test.

74.859%6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. At 230V it is 78.420%.

66.75%2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Efficiency at 2% load (more than 500 W unit) at 115V.

Average power factor at 115V (measured)iAverage power factor over the whole load range at 115V input. 1 is the best possible value.

0.9876Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.958.

0.982Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Average over more than 1450 load combinations at 115V.

Average noise at 115V (measured)iAverage noise over the whole load range at 115V input in the Cybenetics method, at about 30 °C ambient. It is not the noise at full load.

20.11dB(A)6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Average over more than 1450 load combinations at 115V, ambient 28-32 C, Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 19.55 dBA.

25.05dB(A)2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Average over more than 1450 load combinations at 115V. Ambient 28-32 C. Bruel and Kjaer 2270 G4 sound analyzer. The 230V average is 25.58 dBA.

Noise at full load at 115V (measured)iNoise at 100% load at 115V input in the Cybenetics typical load tests. That row often runs at about 45 °C intake. The intake temperature and the fan speed go in the source note. Lower is better.

36.2dB(A)6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Typical load tests at 115V, 100% load row: 36.2 dB(A) at 1193 rpm fan speed. The report prints 45.11 C and 61.69 C in the temperature column of that row. At 230V it is 35.4 dB(A) at 1167 rpm.

42.2dB(A)2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Typical load tests at 115V, 100% load row: 42.2 dB(A) at 1919 rpm fan speed, ambient about 30 C. At 230V it is 42.3 dB(A) at 1923 rpm.

Standby power with no load at 115V (measured)iPower the unit draws from the wall with the PC off and nothing drawn from +5VSB, at 115V input.

0.028W6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0280 W. At 230V it is 0.0756 W.

0.0101W2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Standby power consumption at 115V with no load on +5VSB.

Hold-up time (measured)iHow long the outputs stay in regulation after AC power is lost, at maximum continuous load, as printed in the Cybenetics report. The report names no input voltage. The AC loss to PWR_OK time goes in the source note. Higher is better.

24.8ms6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 24.80 ms, AC loss to PWR_OK 21.30 ms, PWR_OK inactive to DC loss 3.50 ms, at maximum continuous load. The report names no input voltage.

23.3ms2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 23.30 ms, AC loss to PWR_OK 21.40 ms, PWR_OK inactive to DC loss 1.90 ms, at maximum continuous load. The report names no input voltage.

12V ripple at full load (measured)iPeak-to-peak ripple on the +12V rail at full load and 115V input. Lower is better.

21.97mV6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 23.25 mV.

46.95mV2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Non-accredited measurement. 12V ripple at full load at 115V. At 230V it is 42.63 mV.

12V load regulation (measured)iHow far the +12V voltage moves between light and full load at 115V input. Lower is better.

0.81%6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.81%.

0.52%2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Non-accredited measurement. 12V load regulation at 115V. At 230V it is 0.53%.

Cables and connectors

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CablesiOne row per kind of cable that runs from the PSU to a device. Connector is the plug at the device end. Count is the number of those plugs over all cables in the row. Length runs from the PSU end to the first plug. Adapters that plug into other cables are left out. Use 16-pin PCIe when the maker names a 16-pin GPU cable without saying 12V-2x6 or 12VHPWR. A cable from a 12V-2x6 socket on the PSU to 8-pin plugs is a cable, not an adapter, and counts as PCIe 8-pin. When the maker's documents name one GPU cable both 12VHPWR and 12V-2x6, use 16-pin PCIe and name both in the source note. Cables of one connector kind with different lengths or wire gauges get one row each.

ACORSAIR RM1000x SHIFT (2025)

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	610	16-20AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	650	18AWG	Not available
PCIe 8-pin (6+2)	4	3	650	18AWG	Not available
12V-2x6	1	1	650	Not available	600
SATA power	12	4	500	18AWG	Not available
4-pin Molex	4	1	450	18AWG	Not available

Source1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Cable listing: 1 ATX 24-pin 610 mm, 2 EPS 4+4-pin 650 mm, 2 PCIe 8-pin (6+2-pin) 650 mm, 1 90-degree 12V-2x6 to 600W 12V-2x6 (12+4-pin) 650 mm, 1 600W 90-degree 12V-2x6 to 2x 8-pin PCIe (6+2-pin) cable with 2 plugs 650 mm, 4 SATA cables with 3 plugs each (500 mm to the first plug, 100 mm spacing, 700 mm total) and 1 PATA cable with 4 plugs (450 mm to the first plug, 100 mm spacing, 750 mm total). All lengths have a tolerance of 10 mm. PATA plugs are the 4-pin Molex plugs. The 12V-2x6 to 2x 8-pin cable is stored as a PCIe 8-pin cable with 2 plugs. It and the 12V-2x6 cable both plug into the native 12V-2x6 socket of the PSU, as Hardware Busters says the modular panel has one native 12V-2x6 header. The Cybenetics report and Hardware Busters list the 2x 8-pin cable as 2 cables with 2 connectors, which does not match Corsair's listing. Gauges come from the Cybenetics report.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026Included cables: 1x ATX 24-pin 610 mm, 2x ATX12V/EPS12V 4+4-pin 650 mm, 2x 8-pin PCIe 650 mm, 1x 90-degree 12V-2x6 to 2x 8-pin PCIe 650 mm, 1x 90-degree 12V-2x6 to 600W 12V-2x6 650 mm, 2x 3 SATA cable (3x with RM850x, 4x with RM1000x SHIFT) 700 mm and 1x 4 PATA cable 750 mm.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Cables and Connectors table: ATX 24 pin 610 mm 16-20AWG, 2 x 4+4 pin ATX12V 650 mm 18AWG, 2 x 6+2 pin PCIe 650 mm 18AWG, 2 x 2x 6+2 pin PCIe 650 mm 18AWG, 12+2 pin PCIe 655 mm (600W) 16-24AWG, 4 SATA cables with 12 plugs in total (505 mm + 105 mm x 2) 18AWG and 1 Molex cable with 4 plugs (405 mm + 105 mm x 3) 18AWG, no in-cable capacitors. The 16-24AWG range of the 12V-2x6 cable includes the sideband wires, so no gauge is stored for it. The 18AWG gauge of the PCIe cables is stored for the 2x 8-pin cable too. Corsair's lengths are stored, not the report's.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Page 2: the modular panel has twelve sockets including one native 12V-2x6 header, and all cables are debossed PVC.

BSuper Flower Zillion FP 1000W

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	600	18-20AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	700	18AWG	Not available
PCIe 8-pin (6+2)	3	2	600	16-18AWG	Not available
12V-2x6	1	1	600	Not available	600
SATA power	6	2	500	18AWG	Not available
4-pin Molex	2	1	500	18AWG	Not available

Source2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Cables and Connectors table: ATX 20+4 pin 600 mm 18-20AWG, 2 x 4+4 pin ATX12V 700 mm 18AWG, one 6+2 pin PCIe cable with 2 plugs (600 mm + 150 mm) at 16-18AWG and one 6+2 pin PCIe cable with 1 plug (600 mm) at 16AWG, 12+4 pin PCIe (600 W) 600 mm 16-26AWG, one SATA cable with 4 plugs (500 mm + 3 x 150 mm), one cable with 2 SATA plugs (500 mm + 150 mm) and 2 4-pin Molex plugs (+150 mm, +150 mm), all 18AWG. The PCIe gauge range covers both cables. The 16-26AWG range for the 12V-2x6 cable includes the thin sideband wires, so no gauge is stored for it. The report names the cable type as tinned copper. The cable table is for the sample tested. The rear panel photos show a 12V-2x6 socket, 5 CPU/PCI-E sockets and 4 SATA/PERIF sockets.

CPU (EPS) connectorsi8-pin or 4+4-pin CPU power plugs.

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PCIe 8-pin connectorsi8-pin or 6+2-pin GPU power plugs. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

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16-pin GPU connectorsiNative 16-pin GPU power plugs: 12V-2x6, 12VHPWR and 16-pin cables of unstated revision. Adapters are not counted. Counts the plugs in the box. Some cables share one PSU socket, which the source note says.

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1=CalculatedFrom Cables

SATA power connectors

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4-pin Molex connectors

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Cable styleiHow the modular cables are made. Mixed means some cables are sleeved and others flat, such as a sleeved 24-pin cable with flat other cables. From the maker page or a review photo page.

Embossed or debossed flat1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Cable listing: Debossed cable type for every cable. Tech Specs: Cable Type Type 5. Stored as embossed, which covers debossed jackets.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Improved debossed-PVC cables with low-profile combs.

Embossed or debossed flat1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026About this item: Embossed ribbon cables to maximize flexibility. The title says Full Modular Embossed Cables.

Fan

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Fan sizeiFrame size of the cooling fan, such as 120, 135 or 140.

140mm1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Fan Size MM 140mm.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026A quiet 140mm fluid dynamic bearing fan.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026DUT Information: 140mm Fluid Dynamic Bearing Fan (NR140HP).

120mm2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Cooling: 120mm Fluid Dynamic Bearing Fan (HA1225M12F-Z). The parts table names it Hong Hua HA1225M12F-Z, 12V, 0.45A.

Fan bearingiUse the maker's bearing name. FDB and S-FDB are fluid dynamic. HDB is hydrodynamic. Noctua SSO and SSO2 are SSO. Corsair Magnetic Dome is magnetic dome. A brand bearing name that fits no option is Other.

Fluid dynamic (FDB)1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Fan Bearing Technology FDB. Overview: 140mm Fluid Dynamic Bearing fan with a magnetic dome structure. Cybenetics names the fan Corsair NR140HP, Fluid Dynamic Bearing.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026A quiet 140mm fluid dynamic bearing fan.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Parts description: Corsair NR140HP, 140mm, 12V, 0.33A, Fluid Dynamic Bearing Fan.

Fluid dynamic (FDB)1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Title: FDB Fan.2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Cooling: Fluid Dynamic Bearing fan.

Fan modeiSemi-passive means the fan stops at low load, often sold as zero RPM, hybrid or 0 dB mode. Fanless means the unit has no fan.

Semi-passive1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: Zero RPM Mode for near-silent operation at lower loads, with a manual fan override knob.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Zero RPM mode: the fan switches off entirely at low and medium loads. A rear-mounted knob adjusts fan speed.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026DUT Information: Semi-Passive Operation checked (selectable).7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Semi-Passive Operation yes (selectable). Corsair's fan knob explainer says the knob does not turn Zero RPM mode off and only sets the fan speed once the fan starts, so no fan mode switch is stored.8Maker product pagecorsair.com/us/en/explorer/diy-builder/power-supply-units/how-exactly-does-the-fan-control-knob-on-corsair-psus-workRead 15 October 2026Corsair explains that Zero RPM mode is on by default and the knob is an override that sets the fan speed when the fan does turn on. It does not turn the feature off. The product page words the knob as overriding Zero RPM mode, so the fan mode switch field is left empty.

Semi-passive2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Semi-Passive Operation checked and selectable. The typical load table shows the fan at 0 rpm from 10% to 30% load at 115V.

Fan mode switchiA button, switch or software setting lets the user turn the semi-passive mode off so the fan always spins. A unit without a semi-passive mode, whose fan the maker says always spins, has no switch, so it is false.

Not available

Yes1Retailer pageamazon.com/Zillion-Cybenetics-Platinum-Embossed-SF-1000Z12FP/dp/B0HB23BWS2Read 15 October 2026Listing photos of the rear panel show an ECO switch with ON and OFF positions next to the power switch. The Cybenetics report lists semi-passive operation as selectable.2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Semi-Passive Operation is listed as selectable.

Protection and parts

3 of 3 differ

ProtectionsiProtections the maker lists, or a retailer spec table copies from the maker, plus protections the Cybenetics protection tests show working (UVP, NLO, SIP). The Cybenetics manufacturer list has no OVP or UVP row, so do not build the list from it alone. A protection that is not listed may still exist. No-load covers no-load operation and no-load protection. Fan failure is a maker's fan failure protection or fan safeguard, also when the Cybenetics manufacturer block lists it.

Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026Safety and Protection section for the series: OVP on 12V, 5V and 3.3V, OCP on 3.3V, 5V and 12V, OTP, SCP and OPP (shuts off between 115% and 135% of rated power). UVP, NLO and SIP come from the Hardware Busters protection tests.6Measurementcybenetics.com/evaluations/psus/2873Read 15 October 2026Protection Features (Manufacturer): OPP, +12V OCP, OTP, SCP, surge protection and inrush protection ticked, fan failure protection not present.7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Protection Features page: OCP on 12V, 5V, 3.3V and 5VSB, OPP, OTP, SCP, UVP (90V full load and 80V no damage), NLO and SIP (surge MOV, inrush NTC and bypass relay) all shown. Fan failure protection is not present.

Over-current (OCP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)2Measurementcybenetics.com/evaluations/psus/2951Read 15 October 2026Protection Features (Manufacturer) block: OPP, OCP (+12V), OTP, SCP, surge and inrush protection checked, fan failure protection not checked. The Protection Features tests show OCP on 12V, 5V, 3.3V and 5VSB, OPP, OTP, SCP, UVP (full load at 90V and no damage at 80V), NLO and SIP (surge MOV, inrush NTC and bypass relay) all working. The report has no OVP row, so OVP is not stored.

All-Japanese capacitorsiThe maker states that every electrolytic capacitor is from a Japanese maker. A Japanese bulk capacitor alone is not enough. A spec row such as "Japanese capacitors" that names no exception counts.

Yes1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: 105 C-rated 100% Japanese electrolytic capacitors. The Cybenetics parts list also shows 31 polymer capacitors from FPCAP, which the claim does not cover.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026105 C-rated 100% Japanese capacitors.

Not available

MTBF (claimed)iThe maker's mean time between failures, such as 100000. An MTTF figure for the whole unit counts too. An MTTF for the fan alone does not. The test temperature goes in the source note.

100,000h1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: MTBF Hours 100,000 hours. The test temperature is not stated.

Not available

Monitoring and lighting

None of 4 known

Software monitoringiThe unit reports power, temperature or fan data to PC software over a USB or internal connection.

Not available

Not available

SoftwareiThe maker's software for monitoring or control.

Not available

Not available

Built-in power displayiA screen on the unit that shows live power draw or other readings.

Not available

Not available

RGB lighting

Not available

Not available

Dimensions and weight

2 of 2 differ

DimensionsiBody without cables. Width and height are the back face with the AC inlet. Depth is the length into the case, which decides case fit.

Width150Height86Depth160mm(5.9 × 3.4 × 6.3 in)1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Tech Specs: Dimensions 160mm x 150mm x 86mm with no axis names. The quick start guide gives length 160 mm, width 150 mm and height 86 mm. Depth is 160 mm. The page weight of 3kg is a packed weight and is not stored.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026RM1000x specifications: length 160mm, width 150mm, height 86mm.

Not available

WeightiWeight of the unit alone. Use the Hardware Busters figure on hwbusters.com when the maker states none, not a copy on another site. Maker weights that include cables or the box, such as Corsair's, and retailer packed weights are not stored. A net weight counts unless the maker says it includes the cables.

1.65kg(3.6 lb)7Reviewhwbusters.com/psus/corsair-rm1000x-shift-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: 1.65 kg (3.64 lb). The review does not say whether cables are included. Corsair's page prints 3kg, which is a packed weight and is not stored. Amazon US lists 3.6 pounds, also a packed weight. Review dated 2025-11-12.

Not available

In the box

None of 1 known

In the boxiItems supplied with this exact model, verbatim. The AC power cord differs per region.

Not available

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Links

Not compared

Product page

www.corsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-na1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Corsair US store page for the North American model.

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Spec sheet

Not available

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Manual

www.corsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generation2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026Quick start guide of the RMx SHIFT Series 2nd generation. It covers the 750W, 850W and 1000W models. The page keeps no separate PDF.

Not available

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

10years1Maker product pagecorsair.com/us/en/p/psu/cp-9020300-na/rm1000x-shift-fully-modular-atx-power-supply-cp-9020300-naRead 15 October 2026Overview: 10-year warranty. Tech Specs: Warranty 10 Year. The page is the US shop.2Owner's manualcorsair.com/us/en/explorer/diy-builder/power-supply-units/corsair-rmx-shift-series-2nd-generationRead 15 October 2026CORSAIR RMx SHIFT Series 2nd Gen provides a ten-year warranty.3Press releasecorsair.com/newsroom/press-release/corsair-launches-second-generation-rmx-shift-psus-with-updated-cables-and-12v-2x6-gpu-supportRead 15 October 2026Each unit includes a ten-year warranty.

Not available

Both are also in the API. Back to all power supplies.