Skip to content

Thermaltake · 850 W · SFX

Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1

ATX 3.1 · 80 PLUS Platinum · Modular

Capability
69
Cap / price
43
Wattage value
43
Amazon
$160
$160
Available on Amazon Updated Aug 30, 2026 Prime FBA
Capability69.2
Capability / price43.3
Wattage value42.5
$160 on Amazon PSU table Compare this PSU

Size this PSU for a complete buildThe Builder unlocks PSU choices after it knows the CPU, GPU, case format, and estimated demand. Calculate build power first

Written analysis

Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 at a glance

The Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 is a 850 W SFX power supply built to the ATX 3.1 generation. Efficiency is listed as 80 PLUS Platinum. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 69.2, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 7 years. +12V output is 71 A.

Best fit: Performance desktops whose calculated component load fits comfortably within a 750–999 W supply.

Platform and cooling

Dimensions are listed as 125mm(W)x63.5mm(H)x103.8mm(D). Cooling fan size is 90 mm. The unit uses 1 +12V rail at up to 71.00 A per rail. Certifications include 80 PLUS® Platinum.

Current value

At $160, price per kilowatt is $188.22. Capability / price is 43.3 and wattage value is 42.5. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer
Thermaltake
PSU
Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1
Model
PS-STP-0850FNFAPU-1
Launch price
Amazon price
$160
Amazon availability
Available
Price updated
Aug 30, 2026

Power & efficiency

Wattage
850 W
Efficiency
80 PLUS Platinum
Recorded efficiency
92%
Warranty
7 years

Value

Amazon price
$160
Price / kW
$188.22
Capability
69.2
Capability / price
43.3
Wattage value
42.5

Platform & size

ATX generation
3.1
Form factor
SFX
Dimensions
125mm(W)x63.5mm(H)x103.8mm(D)
Modular
Yes
Fanless
No

Electrical

Input voltage
100-240
+12V output
71 A
+5V output
18 A
+3.3V output
18 A
+12V rails
1
Max amps / rail
71.00 A

Cooling & build

Fan size
90 mm
Fan stop
Yes
Certifications
80 PLUS® Platinum

Additional information

Also listed as
Toughpower SFX 850W 80Plus Platinum ATX 3.1
Color
Black

Amazon

Price history

Nearby capability

Similar PSUs

Power supplies close to Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1 on calculated capability. Open the PSU table to sort, filter, and compare side by side.

Compare these in the PSU table

Discussion

Comments on Thermaltake Toughpower SFX 850W 80Plus Platinum ATX 3.1

No comments yet.

Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

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