Thermaltake

Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 Standard Power Supply; 450W 12V-2x6 Connector Included; Full Modular; 90mm FDB Fan; PS-STP-0850FNFAPU-1; 7 Year Warranty

Name: Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 Standard Power Supply; 450W 12V-2x6 Connector Included; Full Modular; 90mm FDB Fan
Brand: Thermaltake
SKU: B0D2851VQD

Status: Thermaltake Toughpower SFX 850W 80Plus Platinum…: Unavailable on Amazon as of 2026-10-07 04:26 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 Standard: ATX 3.1 + PCIe 5.1 ready with native 12V-2x6 connector; main trade-off: SFX size limits it to small form-factor cases.

Unavailable on Amazon as of 2026-10-07 04:26 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Similar: MSI MAG A850GL PCIE5 — $109.99 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $109.99

Similar: Thermaltake Toughpower GF A3 Snow Edition 850W… — $124.75 on Amazon as of 2026-10-06 10:29 UTC (price may vary).

View Current Price — $124.75

Similar: Thermaltake Toughpower GF A3 850W — $129.99 on Amazon as of 2026-10-06 12:20 UTC (price may vary).

View Current Price — $129.99

Original listing (currently unavailable) → Compare to similar power supplies

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-07

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ ATX 3.1 + PCIe 5.1 ready with native 12V-2x6 connector
✓ 80 Plus Platinum certified for high efficiency
✓ 450W 12V-2x6 cable powers modern GPUs directly
✓ Compact SFX form factor (125x63.5x103.8mm) for small builds
✓ Tight ±2% voltage regulation, <30mV ripple noise

Cons

✗ SFX size limits it to small form-factor cases
✗ 850W caps headroom for dual high-end GPU rigs
✗ 90mm FDB fan can spin up under sustained load

Manufacturer description

The Toughpower SFX Platinum series is built to support next-gen hardware, meeting the latest Intel SFX 12V 4.1 and ATX 12V 3.1 standards. With its native PCIe 12V-2x6 (12+4pin) modular interface, it efficiently powers PCIe 12+4pin graphics cards. This series not only achieves 80 PLUS Platinum efficiency but also guarantees stability, durability, and reliability. The dimensions of the Toughpower SFX Platinum measure 125mm(W) x 63.5mm(H) x 103.8mm(D).

SpecPicks Verdict

SpecPicks scored Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 Standard… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Thermaltake's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

80Plus Platinum certified compact power with limitless performance
PCIe Gen 5.1 ready and fully compatible with ATX 3.1 standards.
Fully modular low-profile cables
＜30mV Low Ripple Noise; Extremely Strict Voltage Regulation ＜±2%; 17ms and up Hold Up Time
7 Year Warranty

Full Specifications

Brand	Thermaltake
Wattage	850 watts
Model Name	Toughpower SFX 850W
Unit Count	1 Count
Form Factor	SFX
Model Number	SFX-0850AH8FLP
Connector Type	ATX
Cooling Method	Air
Number of Fans	1
Output Wattage	850
Item Dimensions	4.05 x 4.9 x 2.5 inches
Mfr Part Number	PS-STP-0850FNFAPU-1
Compatible Devices	PC
Power Supply Design	Full Modular
Warranty Description	7 Year Manufacturer
Maximum Input Voltage	240 volts_of_alternating_current
Minimum Input Voltage	115 volts
Item dimensions L x W x H	4.05 x 4.9 x 2.5 inches
System Bus Connector Type	ATX
Connector Type Used on Cable	ATX

Ready to buy?

Amazon shows no buyable offer for Thermaltake Toughpower SFX 850W 80Plus Platinum… at the last check. A similar in-stock product is MSI MAG A850GL PCIE5. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Similar — $109.99