Power supplies / Compare

Lian Li SX Platinum 1000W vs Montech Century II 1200W

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Product A: Lian Li

SX Platinum 1000W

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B

Product B: Montech

Century II 1200W

53 of 66 known

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Only differences

ALian Li SX Platinum 1000W

BMontech Century II 1200W

General

5 of 12 differ

Series

SX Platinum1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Product title SX Platinum. The page covers the SX0850P, SX1000P and SX1200P, each in black and white.

Century II1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Page title: CENTURY II 1200W in the CENTURY line of 80 PLUS Gold units.

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

SX1000P, SX1000P.B, SX1000P.W1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications table: product name and model SX1000P. The retail codes SX1000P.B (black) and SX1000P.W (white) come from Amazon US and BuildCores.7Retailer pageamazon.com/dp/B0FPCF4H5WRead 15 October 2026Item details: Model Number and Mfr Part Number SX1000P.B.8Retailer pageamazon.com/dp/B0FPCDJYBWRead 15 October 2026Item details: Model Number and Mfr Part Number SX1000P.W.

Century II 1200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Model Name Century II 1200W. The maker prints no part number.

GTIN / EAN

840353051874, 8403530519597Retailer pageamazon.com/dp/B0FPCF4H5WRead 15 October 2026Item details: UPC 840353051874. The check digit is valid. BuildCores lists the same UPC for the black unit.8Retailer pageamazon.com/dp/B0FPCDJYBWRead 15 October 2026Item details: UPC 840353051959. The check digit is valid. This is the only source for the white UPC.

47105627463651Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: EAN 4710562746365.

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

13 November 20253Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026Release dated November 13th, 2025.

15 April 20252Press articlefunkykit.com/news/montech-introduces-century-ii-power-supplyRead 14 October 2026Article dated 2025-04-15. It says the line is available on April 15, 2025 at 9 AM Eastern Time.

Status

Available7Retailer pageamazon.com/dp/B0FPCF4H5WRead 15 October 2026The listing shows In Stock.

Available6Retailer pagemaxmybuild.com/power-supplies/montech-century-ii-1200wRead 14 October 2026Listing shows $159.90 at Amazon and Newegg, both in stock, updated 14 Oct 2026. This is a current selling price, not the launch price.

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

Not available

Not available

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

Not available

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

$149.993Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026MSRP table in the release: SX0850P $119.99, SX1000P $149.99, SX1200P $159.99. This is a US MSRP, so it is stated without sales tax.

$129.92Press articlefunkykit.com/news/montech-introduces-century-ii-power-supplyRead 14 October 2026CENTURY II 1200 W: US$ 129.9. US price, no sales tax. KitGuru's launch article prints $129.99 and Hardware Busters prints an MSRP of $130 excluding VAT.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: MSRP (excluding VAT) $130. The stored value is the maker's launch price from the Funkykit report.

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.

Not available

Not available

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

Not available

Not available

ColoursiThe maker's own colour names

Black, White1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Color Black/White.7Retailer pageamazon.com/dp/B0FPCF4H5WRead 15 October 2026Color: Black.8Retailer pageamazon.com/dp/B0FPCDJYBWRead 15 October 2026Color: White.

Metallic Silver1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview text: a sleek metallic silver finish. The maker names no other colour.

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Dimensions (W)150 mm X (H)86 mm X (D)140 mm, the ATX size. The page says the series uses the standard ATX form factor.

ATX1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Form Factor ATX (140).3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Type ATX12V. The maker lists form factor ATX (140).

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: ATX12V Version ATX 3.1.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026Fully compliant with Intel's ATX 3.1 specification.

ATX 3.11Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: built to ATX 3.1 and PCIe 5.1 platforms. The 80 PLUS certificate type line reads ATX 3.0, ATX 3.1.

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Page: full compliance with ATX 3.1 and PCIe 5.1 standards.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026Native PCIe Gen 5.1 12V-2x6 connector rated up to 600W.

PCIe 5.11Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: built to ATX 3.1 and PCIe 5.1 platforms, with a standard 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 pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: DC output cable Fully-Modular.

Fully modular1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: a fully modular design with included flat cables.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Cable Design Fully Modular.

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.

Zhong Yuan Power5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026DUT Information: OEM/ODM Zhong Yuan Power. The unit label also names Guangdong ZYPower Co., Ltd. as the maker.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Manufacturer (OEM) Zhong Yuan Power.

Shenzhen Xinweiye Technology (XWY)3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: OEM/ODM Shenzhen Xinweiye Technology Co., Ltd. Hardware Busters names the same company.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Manufacturer (OEM) Shenzhen Xinweiye Technology.

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Max. DC output 1000W.

1,200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Wattage 1200, Total Power 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Manufacturer-provided information: Rated Power 1200 W.

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.

50°C5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Manufacturer-Provided Information: Operating Temperature (Continuous Full Load) 0 - 50 C.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Operating Temperature (Continuous Full Load) 0 - 50 C, copied from the Cybenetics report.

Not available

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 rail3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026Release: a high-amperage single +12V rail.5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Power Specifications: one +12V column with 83.3 A and 999.6 W.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Number of 12V rails 1.

Single rail3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: one +12V column with 100A and 1200W.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: Number of 12V rails 1.

+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.

83.3A2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026AC input rating / DC output rating table, SX1000P: +12V 83.3A.

100A1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +12V 100A, 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: +12V 100A, 1200W.

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

999.6W1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Combined +12V 999.6W for the SX1000P.2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026Max output power, SX1000P: +12V 999.6W.

1,200W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +12V 100A, 1200W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: +12V 1200W.

+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.

100W1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Combined +3.3V & +5V Output 100W.2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026Max output power, SX1000P: one merged 100W cell for +3.3V and +5V (20A each).

100W1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table prints +3.3V 20A and +5V 20A with one 100W cell. The Cybenetics power table has one merged 100W cell for 3.3V and 5V, so 100W is the combined limit.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: one merged 100W cell for 3.3V and 5V, 20A each.

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

3A2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026SX1000P: +5Vsb 3A, 15W. The -12V rail is 0.3A, 3.6W.

3A1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026DC Output table: +5VSB 3A, 15W.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Power Specifications: 5VSB 3A, 15W.

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

Lowest100Highest240V1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Input rating 100-240Vac, 6-12A for the SX1000P, 50-60Hz.2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026SX1000P: 100-240Vac, 12-6A, 50-60Hz. A 200-240Vac, 6A rating applies to China and Korea only.

Lowest100Highest240V1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026AC Input 100-240Vac 50-60Hz 15A-10A.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Manufacturer-provided information: 100-240 Vrms, 15 A, 50-60 Hz.

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

Yes5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Temperature and Compliance Info: ALPM (Alternative Low Power Mode) compatible, checked. ATX v3.1 PSU Power Excursion is checked.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Alternative Low Power Mode support yes.

Yes3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Temperature and Compliance Info: ALPM compatible, checked.

Certifications

2 of 5 differ

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.

80 PLUS Platinum4Certification listclearesult.com/80plus/sites/80plus/files/manufacturer-certificate/LIAN%20LI%20INDU_SX1000P_1000W_SOCE%207989_Report.pdfRead 15 October 202680 PLUS ID 7989, model SX1000P, ATX 3.1, test date 2025-10-01, sample serials N/A. Platinum at 115V, typical efficiency 92.87% at 50% load. Lian Li also claims 80 PLUS Platinum.

80 PLUS Gold4Certification listclearesult.com/80plus/sites/80plus/files/manufacturer-certificate/MONTECH_CENTURY%20II%201200W_1200W_SOCE%207852_Report.pdfRead 14 October 202680 PLUS ID 7852, model CENTURY II 1200W, type ATX 3.0, ATX 3.1, 1200 W, 115V Internal, Gold, test date 2025-06-04. The certificate lists no sample serial. The maker's own page says Platinum, which is the Cybenetics level.

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

Cybenetics Platinum5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Report 26PS3167A, lab ID LL10003167, sample serial G9PSX1000PB0CC255200002 (black unit), received Jan 2, 2026, tested Jan 29, 2026, issued Feb 3, 2026. ETA Platinum at 115V in the Cybenetics database. Lian Li claims 80 PLUS Platinum and PPLP Platinum and prints no Cybenetics level.

Cybenetics Platinum3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Report 25PS2808A, certification ID 252808, issued May 13, 2025. The database name is Montech Century II Gold 1200 ATX3. The badge is ETA Platinum at 115V, as Hardware Busters also prints. The 80 PLUS certificate says Gold.

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 Platinum5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026The Cybenetics database shows ETA Platinum at 230V.

Cybenetics Platinum3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026ETA Platinum at 230V (badge image, and Hardware Busters prints Platinum).

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

Standard++5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026LAMBDA Standard++ at 115V in the Cybenetics database.

Standard++3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026LAMBDA Standard++ at 115V (badge image). The 115V average of 30.37 dBA is above the A- band of 25-30 dBA. Hardware Busters prints A- (25-30 dB(A)), which matches the 230V result.

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

Standard++5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026LAMBDA Standard++ at 230V in the Cybenetics database.

A-3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026LAMBDA A- at 230V (badge image), average 29.44 dBA.

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.

90.716%5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Average over more than 1450 load combinations at 115V, ambient 28-32 C. At 230V it is 92.544%.

89.94%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 115V. Sample received Apr 29, 2025, tested May 8, 2025, ambient 28-32 C. The report lists no sample serial.

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

92.544%5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Average over more than 1450 load combinations at 230V.

92.169%3Measurementcybenetics.com/evaluations/psus/2808Read 14 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.

75.22%5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. At 230V it is 74.557%.

65.28%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Efficiency at 2% load (more than 500 W unit) at 115V. At 230V it is 74.640%.

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

0.995Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.958.

0.9843Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Average over more than 1450 load combinations at 115V. At 230V it is 0.957.

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.

32.88dB(A)5Measurementcybenetics.com/evaluations/psus/3167Read 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 31.88 dBA.

30.37dB(A)3Measurementcybenetics.com/evaluations/psus/2808Read 14 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 29.44 dBA. The fan ran at 1030 rpm at 10% load in the typical load tests, so the semi-passive mode was not active during them. The report marks semi-passive operation as selectable.

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.

42.4dB(A)5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Typical load tests at 115V, 100% load row: 42.4 dB(A) at 1893 rpm fan speed. The report prints 45.22 C and 53.05 C in the temperature column of that row, so this is a hotter test than the 28-32 C sweeps. At 230V it is 42.6 dB(A) at 1899 rpm. The fan stays at 0 rpm up to 30% load at 115V.

45.1dB(A)3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Typical load tests at 115V, 100% load row: 45.1 dB(A) at 1912 rpm fan speed, ambient about 30 C. At 230V it is 41.5 dB(A) at 1864 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.

0.0339W5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0339 W. At 230V it is 0.1041 W.

0.0521W3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Standby power consumption at 115V with no load on +5VSB: 0.0521 W. At 230V it is 0.0959 W.

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.

19ms5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 19.00 ms, AC loss to PWR_OK 17.30 ms, PWR_OK inactive to DC loss 1.70 ms, at maximum continuous load. The report names no input voltage.

24ms3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Hold-Up Time and PWR_OK Signal: hold-up time 24.0 ms, AC loss to PWR_OK 19.7 ms, PWR_OK inactive to DC loss 4.3 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.

31.15mV5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 25.46 mV.

19.68mV3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Non-accredited. 12V ripple at full load at 115V. At 230V it is 19.46 mV.

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

0.25%5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.22%.

0.46%3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Non-accredited. 12V load regulation at 115V. At 230V it is 0.47%.

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.

ALian Li SX Platinum 1000W

Connector	Connectors	Cables	Length to first plug (mm)	Wire gauge	Rated power (W)
ATX 24-pin (20+4)	1	1	600	16AWG	Not available
CPU 8-pin (EPS, 4+4)	2	2	700	16AWG	Not available
PCIe 8-pin (6+2)	3	3	550	16AWG	Not available
PCIe 8-pin (6+2)	2	1	550	18AWG	Not available
12V-2x6	1	1	600	16AWG	600
SATA power	8	2	400	18AWG	Not available
4-pin Molex	4	1	400	18AWG	Not available

Source2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026Cable table, 1000W row: 1 motherboard 24/20-pin 600 mm, 2 CPU/ATX 12V 4+4-pin 700 mm, 3 single 8/6+2-pin PCIe 550 mm, 1 cable with 2 8/6+2-pin plugs 550 mm (12V-2x6 to dual PCIe), 1 12V-2x6 600 mm marked 600W, 2 SATA cables with 4 plugs each (400 mm + 150 mm x 3) and 1 PATA cable with 4 plugs (400 mm + 150 mm x 3). Cybenetics and Hardware Busters measure 450 mm for the SATA and Molex cables and 155 mm for the SATA spacing. The maker figures are stored. The 12V-2x6 to dual PCIe cable and the native 12V-2x6 cable use the same 12V-2x6 socket, so they are alternatives. Gauges come from the Cybenetics report.5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Cables and Connectors table: ATX 20+4 pin 600 mm 16AWG, 2 x 4+4 pin EPS12V 700 mm 16AWG, 3 x 6+2 pin PCIe 550 mm 16AWG, the 2x 6+2 pin PCIe cable 550 mm 18AWG, 12+4 pin PCIe 600 mm (600W) 16-24AWG, 2 SATA cables with 8 plugs in total 450 mm + 155 mm x 3 18AWG and 1 Molex cable with 4 plugs 450 mm + 150 mm x 3 18AWG. The 16-24AWG range of the 12V-2x6 cable includes the sideband wires, so 16AWG is stored as the power wire gauge. The report lists the dual PCIe cable as 2 cables with 2 connectors, while Lian Li and Hardware Busters count 1 cable with 2 plugs. The maker count is stored.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Page 2: the modular panel has a dedicated 12V-2x6 socket, five CPU and PCIe sockets, four peripheral sockets and the split 18+10-pin motherboard pair. The bundle has three single PCIe 6+2-pin cables and one cable from the 12V-2x6 socket to two 6+2-pin plugs. That cable and the native 12V-2x6 cable are alternatives, so the five legacy PCIe plugs and the native cable cannot all be used together.

BMontech Century II 1200W

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

Source1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Cables table: 1 motherboard cable with a 20+4 pin plug (600 mm), 2 CPU cables with one 4+4 pin plug each (700 mm), 3 PCIe cables with two 6+2 pin plugs each (600 mm), 1 12V-2x6 cable (600 mm), 3 SATA cables with 4 plugs each (950 mm to the last plug) and 1 Molex cable with 4 plugs (950 mm to the last plug). The first-plug lengths of the SATA and Molex cables (500 mm) and the gauge come from the Cybenetics report. The report measures the ATX cable at 595 mm, the maker table says 600 mm.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Cables and Connectors table: ATX 20+4 pin 595 mm 18AWG, 2 x 4+4 pin EPS12V 700 mm 18AWG, 3 PCIe cables with 6+2 pin plugs (600 mm then 150 mm), 6 plugs in total, 18AWG, 12+4 pin PCIe 600 mm (600W) 16-26AWG, 3 SATA cables (500 mm plus 3 x 150 mm spacing) with 12 plugs in total 18AWG, 1 Molex cable (500 mm plus 3 x 150 mm) with 4 plugs 18AWG. The 16-26AWG range of the 12V-2x6 cable includes the thin sideband wires, so no gauge is stored for it.

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

2=CalculatedFrom Cables

2=CalculatedFrom Cables

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.

5=CalculatedFrom Cables

6=CalculatedFrom Cables

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.

1=CalculatedFrom Cables

1=CalculatedFrom Cables

SATA power connectors

8=CalculatedFrom Cables

12=CalculatedFrom Cables

4-pin Molex connectors

4=CalculatedFrom Cables

4=CalculatedFrom Cables

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.

Mixed1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Note on the page: main cables use braided sleeving, with cable combs on the 24-pin, CPU and 12V-2x6 GPU cables. Other cables, such as SATA and the 12V-2x6 to dual PCIe (6+2) cable, use flat ribbon sleeving. Stored as mixed.

Flat1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: flat cables and a fully modular design.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Cables page: all cables are flat and consist of black gauges. Review published May 30, 2025.

Fan

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

120mm1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Fan type 120 mm FDB fan.

135mm1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Fan Size 135mm.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: 135mm Fluid Dynamic Bearing Fan.

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Fan type 120 mm FDB fan.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026120mm FDB fan with a Zero RPM fanless mode.5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026DUT Information: 120mm Fluid Dynamic Bearing Fan (HA1225M12F-Z).6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Part Analysis: Hong Hua HA1225M12F-Z, 120mm, 12V, 0.45A, Fluid Dynamic Bearing Fan.

Fluid dynamic (FDB)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Bearing FDB.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: 135mm Fluid Dynamic Bearing Fan (HA13525H12F-Z).

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Page: fanless operation up to 40% load. The fan enters its smart stop/start mode at or below 40% load.5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026DUT Information: Semi-Passive Operation checked (selectable). The typical load table shows 0 rpm from 10% to 30% load at 115V.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: Semi-Passive Operation yes (selectable). The fan stays stopped through 30% of rated load on a 115V line.

Semi-passive1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: 135mm fan with Smart Zero Fan mode.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Semi-Passive Operation checked (selectable).

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.

Yes1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Page: the smart stop/start feature can be enabled or disabled using the switch on the rear of the unit.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026The Zero RPM fanless mode can be toggled on or off using the switch on the rear panel.

Yes3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026DUT Information: Semi-Passive Operation marked selectable.5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Product photos page: on the front side, besides the power switch, a smaller switch turns the fan's semi-passive operation on and off.

Protection and parts

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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)1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: protection OPP, NLP, OVP, SCP, OCP, OTP, SIP, UVP. NLP is no-load protection.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026OPP, OVP, SCP, OCP, OTP, UVP, SIP and NLP.5Measurementcybenetics.com/evaluations/psus/3167Read 15 October 2026Protection Features (Manufacturer): OPP, +12V OCP, OTP, SCP, surge protection and inrush protection ticked, fan failure protection not present. UVP and NLO come from the Hardware Busters protection tests.6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Protection Features page: OCP on 12V, 5V, 3.3V and 5VSB, OPP, OTP, SCP on every rail, 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), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO), Surge and inrush (SIP)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: OPP / OVP / UVP / SCP / OCP / OTP. NLO and SIP come from the Cybenetics protection tests.3Measurementcybenetics.com/evaluations/psus/2808Read 14 October 2026Protection Features (Manufacturer) lists OPP, +12V OCP, OTP, SCP, surge and inrush current protection. Protection tests tick UVP at 90 V and 80 V and NLO, and SIP shows an MOV for surge and an NTC with bypass relay for inrush. The maker lists OVP, which the report does not test.

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 pagelian-li.com/product/sx-platinumRead 15 October 2026Page: 100% Japanese Rubycon, Nippon Chemi-Con and Nichicon 105 C capacitors. All electrolytic and solid capacitors are from those Japanese brands. Hardware Busters lists FPCAP polymer capacitors in the teardown, which the claim does not cover.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026100% Japanese 105 C capacitors.

Yes1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Overview: 100% Japanese capacitors in the power architecture. The Cybenetics parts list also names 6 CapXon and 33 Chemi-Con polymer capacitors. CapXon is not a Japanese maker, so the claim may cover the electrolytic capacitors only.

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.

Not available

Not available

Monitoring and lighting

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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

No6Retailer pagemaxmybuild.com/power-supplies/montech-century-ii-1200wRead 14 October 2026Listing specs: RGB No. The maker page and Hardware Busters describe no lighting.

Dimensions and weight

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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.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: (W)150 mm X (H)86 mm X (D)140 mm.

Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Dimensions (L*W*H) 140*150*86mm, so depth 140, width 150, height 86. The page also prints Operating Temperature 0-40 C, which is not stored. Hardware Busters prints 0-50 C for continuous full load.

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.

1.49kg(3.3 lb)6Reviewhwbusters.com/psus/lian-li-sx1000p-1000w-atx-v3-1-psu-reviewRead 15 October 2026Technical specifications: 1.49 kg (3.28 lb), the same figure as the Cybenetics report. The review does not say whether cables are included. Amazon US lists 6.9 pounds, which is a packed weight and is not stored. Review dated 2026-09-22 for the same sample LL10003167.

1.53kg(3.4 lb)5Reviewhwbusters.com/psus/montech-century-ii-1200w-atx-v3-1-psu-reviewRead 14 October 2026Technical specifications: 1.53 kg (3.37 lb). The review does not say whether cables are included. Montech does not publish a weight.

In the box

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

Power supply, AC power cord, Cable combs 12V-2X6 x 2, Cable combs 24pin x 2, Cable combs 8 pin x 6, Case screw x 42Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026Contents (page 1): power supply x1, AC power cord x1 (varies by region), cable combs 12V-2X6 x2, cable combs 24pin x2, cable combs 8 pin x6, case screw x4. Hardware Busters also lists cable ties in the bundle, which the manual does not.

Not available

Links

Not compared

Product page

lian-li.com/product/sx-platinum1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Maker product page for the SX Platinum series.

www.montechpc.com/century-ii-1200w1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026

Spec sheet

Not available

Not available

Manual

drive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/view1Maker product pagelian-li.com/product/sx-platinumRead 15 October 2026Download button SX850P/SP1000P/SX1200P Manual (a Google Drive share link). The title has a typo, the file is headed SX0850P/SX1000P/SX1200P.

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

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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 pagelian-li.com/product/sx-platinumRead 15 October 2026Specifications: Warranty 10 Years. The page is the global Lian Li page.2Owner's manualdrive.google.com/file/d/1zrF6xFm6Yvy33xA0oxVEnQQmp_DsDEaQ/viewRead 15 October 2026Warranty Policy: the warranty period is 10 years from the date of purchase.3Press articlelanoc.org/news/hardware-news/lian-li-introduces-the-platinum-certified-sx-psu-seriesRead 15 October 2026Backed by a 10-year warranty.

10years1Maker product pagemontechpc.com/century-ii-1200wRead 14 October 2026Specifications tab: Warranty 10 Years. The page is the global maker page and names no market.

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