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PC parts / Power supplies

Phanteks AMP GH 850W
Power
850W
Efficiency
80 PLUS Gold
Modular cables
Fully modular
ATX version
ATX 3.1

38 of 66 fields known.

At a glance

  • SATA power connectors

    10

    Higher than 78% of other power supplies.

All specs

SourceCalculated

General

Announced
Not available
Predecessor
Not available
Successor
Not available
Launch price (EU)
€119.96Press articlehartware.de/2024/07/17/phanteks-unveils-two-new-products-amp-gh-psus-and-polar-st-cpu-air-coolersRead 16 October 2026MSRP: AMP GH 850W GOLD Black EUR 119.90 and White EUR 129.90. The release names Europe and not a country.
Markets
Not available
Form factor
ATX1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Specifications: Compact ATX size, 140 x 150 x 86 mm.
ATX version
ATX 3.11Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Platform: Intel ATX 3.1 | PCIe Gen5.1. Built to ATX 3.1 specifications.3Owner's manualphanteks.com/manuals/AMP_GH_Manual_v1.1.pdfRead 16 October 2026Cover page: ATX 3.1 platform.
PCIe CEM version
PCIe 5.11Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Platform: PCIe Gen5.1. Latest PCIe Gen 5.1 GPU cable technology with the 12V-2x6 connector.3Owner's manualphanteks.com/manuals/AMP_GH_Manual_v1.1.pdfRead 16 October 2026Cover page: PCIe Gen5.1 support.
Built by (OEM)
Not available

Power

Rated continuous power
850W1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Power Output 850 Watt. DC Output 850W.
Full power rated up to
Not available
+12V max current
70A1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Output table: 12V maximum output 70A.
+3.3V and +5V combined power
100W1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Output table: 5V 20A and 3.3V 20A share one 100W maximum capacity cell. The -12V 0.3A rail is 3.6W.
+5V standby current
2.5A1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Output table: 5VSB maximum output 2.5A, 12.5W.
Alternative low power mode (ALPM)
Not available

Certifications

80 PLUS rating
80 PLUS Gold1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Specifications: 80 Plus Gold. This is the maker claim. The 80 PLUS list has an entry for the label model PH-P850GH_01 (ID 6800.2, Gold, tested 2022-04-11, input current 12-6 A), which the agent did not match to this unit, since the maker page prints 10 A. No entry for PH-P850GH_BK01 exists.
Cybenetics efficiency at 115V
Not available
Cybenetics efficiency at 230V
Not available
Cybenetics noise at 115V
Not available
Cybenetics noise at 230V
Not available

Measured

We could not find any of these 10 fields. Show them
Average efficiency at 115V (measured)
Not available
Average efficiency at 230V (measured)
Not available
Light-load efficiency at 115V (measured)
Not available
Average power factor at 115V (measured)
Not available
Average noise at 115V (measured)
Not available
Noise at full load at 115V (measured)
Not available
Standby power with no load at 115V (measured)
Not available
Hold-up time (measured)
Not available
12V ripple at full load (measured)
Not available
12V load regulation (measured)
Not available

Cables and connectors

Cables
ConnectorConnectorsCablesLength to first plug (mm)Rated power (W)
ATX 24-pin (20+4)11610Not available
CPU 8-pin (EPS, 4+4)22650Not available
PCIe 8-pin (6+2)33750Not available
12V-2x611720450
SATA power103450Not available
4-pin Molex21450Not available
Source1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026The page now prints Scope of Delivery, Cables, Textured: 1x 18+10-Pin Mainboard 600 mm, 2x 4+4-Pin CPU 700 mm, 3x 6+2-Pin PCI-E 750 mm, 1x 12V-2x6 720 mm, 1x 6-Pin 4-SATA 400 mm and 1x 6-Pin 2-SATA + 2-Molex 400 mm (120 mm spacing), with 6 CPU|PCIe and 4 SATA|Molex sockets. The retail box table of the 850W unit (photo in the XtremeHardware review), the installation guide and an earlier copy of this page in that review give 610, 650, 750, 720 and 450 mm and two 4-SATA cables plus one 2-SATA + 2-Molex cable, on 5 CPU|PCIe and 3 SATA|Molex sockets, which matches the Phanteks product render. The box and guide values are stored and the conflict with the current page text is noted for review. The 12V-2x6 cable is 450W on the page, the box and the review, while retailers print 600W.4Owner's manualphanteks.com/manuals/AMP_GH_Installation_Guide_v1.1.pdfRead 16 October 2026Cable table for the whole GH range: motherboard 24-pin 610 mm, CPU 4+4-pin 650 mm, PCIe 6+2-pin 750 mm, 12V-2x6 720 mm, SATA 4 plugs 450 mm with 150 mm spacing, SATA and Molex 2 and 2 plugs 450 mm. It says the amount of cables may vary by model, so the counts per cable type come from the retail box table of the 850W unit.9Reviewxtremehardware.com/recensioni/14837-phanteks-amp-gh-850-recensioneRead 16 October 2026The box photo of the 850W unit prints a cable table with cable number, connectors per cable and length: 24-pin 1 cable 610 mm, CPU 2 cables 650 mm, PCIe 6+2 3 cables 750 mm, 12V-2x6 1 cable 720 mm, SATA 2 cables with 4 plugs each (450 mm then 150 mm spacing), SATA and Molex 1 cable with 2 SATA and 2 Molex plugs (450 mm then 150 mm spacing). The text names the same cables and the maker spec table copy in the review shows 5 CPU|PCIe and 3 SATA|Molex sockets. The text puts the cable length between 610 mm and 750 mm. No wire gauge is given.
CPU (EPS) connectors
2
PCIe 8-pin connectors
3
16-pin GPU connectors
1
SATA power connectors
10
4-pin Molex connectors
2

Fan

Protection and parts

Protections
Over-current (OCP), Over-voltage (OVP), Under-voltage (UVP), Over-power (OPP), Over-temperature (OTP), Short-circuit (SCP), No-load (NLO)1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Output Protection: OPP, OVP, UVP, SCP, OCP, OTP, No-Load Protection and Reset Protection. Reset protection has no option in the schema.9Reviewxtremehardware.com/recensioni/14837-phanteks-amp-gh-850-recensioneRead 16 October 2026Lists OPP, OVP, UVP, SCP, OCP, OTP, No-Load Protection and Reset Protection, copied from the maker.
All-Japanese capacitors
Not available
MTBF (claimed)
100,000h1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026MTBF > 100.000 hrs at 25 C (Excluding DC fan). Published with a greater-than sign.

Monitoring and lighting

We could not find any of these 4 fields. Show them
Software monitoring
Not available
Software
Not available
Built-in power display
Not available
RGB lighting
Not available

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Width150Height86Depth140mm(5.9 × 3.4 × 5.5 in)1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Length x Width x Height 140 x 150 x 86 mm (5.5 x 5.9 x 3.4 in). Depth is 140 mm and the back face is 150 x 86 mm.
Weight
1.4kg(3.1 lb)1Maker product pagephanteks.com/product/amp-gh-black-850Read 16 October 2026Net Weight 1.40 kg (3.08 lbs). Gross Weight 3.20 kg is the packed weight and is not stored.

In the box

Warranty

Compare with

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Variants

Each variant lists only what differs from the specs above.

Model numberGTINLaunch price (US)Launch price (EU)MarketsColours
PH-P850GH_BK01886523510413Not available€119.9EUBlack
PH-P850GH_BK01886523510475Not availableNot availableGBBlack
PH-P850GH_BK01886523510536$119.99Not availableUSBlack
PH-P850GH_WT01886523510420Not available€129.9EUWhite
PH-P850GH_WT01886523510482Not availableNot availableGBWhite
PH-P850GH_WT01886523510543$129.99Not availableUSWhite

Sources

We read 9 sources for this power supply. The numbers match the markers in the sheet.

  1. Read 16 October 2026Backs 28 fields
  2. Read 16 October 2026Backs 4 fields
  3. Read 16 October 2026Backs 5 fields
  4. Read 16 October 2026Backs 4 fields
  5. Read 16 October 2026Backs 1 field
  6. Read 16 October 2026Backs 4 fields
  7. Read 16 October 2026Backs 3 fields
  8. Read 16 October 2026Backs 3 fields
  9. Read 16 October 2026Backs 9 fields

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