Thermaltake Toughpower SFX Platinum 850W
The current Thermaltake Toughpower SFX Platinum 850W price from retailers, its key specifications, and how it performs for each job.
Thermaltake · PSU · SFX
Retailer photo of Thermaltake Toughpower SFX Platinum 850W. View this offer in Where to buy
Works well for: Gaming PC, Small form factor, Workstation & 24/7
Trade-offs: you want strong value with Balanced priorities specifically
- Rated output
- 850 W
- 80 PLUS rating
- 80 PLUS Platinum
- Size
- SFX
- Modularity
- Fully modular
- ATX standard
- ATX 3.1
Move a slider and the page re-scores this product against the same market frame.
What does it cost today, and is that a good price?
Market confidence: MediumAt $177 the Thermaltake Toughpower SFX Platinum 850W is priced in line with its $179 representative market level. Only 2 verified new offers stand behind it, so the level can move quickly.
Consider: Phanteks AMP GH 850W Black offers stronger value around $85.Compare
Prices & availability
Thermaltake Toughpower SFX Platinum 850W: current price and offers
Compare the offers we track for this model, across variants and retailers.
2 tracked offers · 2 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Thermaltake Toughpower SFX Platinum 850W | Newegg | New | $177 | 37 | 2026-11-08 | View offer → |
| Thermaltake Toughpower SFX Platinum 850W | B&H | New | $180 | 36 | 2026-11-09 | View offer → |
| Thermaltake Toughpower SFX Platinum 850WMultiple variants available | Amazon Affiliate | Varies | Find on Amazon | Not tracked | No price snapshot | Find on Amazon → |
Prices are dated snapshots, not live quotes — confirm the final price at the store. New, refurbished and used offers are listed separately; used offers carry warranty and seller risk.
Performance and where it ranks
Two different questions, side by side. Performance compares what the hardware can do; Value compares what that capability costs at today’s price. A product can rank high on one and low on the other — that gap is the point.
Performance Balanced
How much it can do. Price plays no part in this ranking.
#57 of 94 graded Power supplies
- #54 Cooler MasterCooler Master V850 SFX Gold 28
- #55 NZXTNZXT C850 SFX Gold 28
- #56 GigabyteGigabyte 850W GP-P850GM 28
- #57 ThermaltakeThermaltake Toughpower SFX Platinum 850W 28
- #58 be quiet!be quiet! Dark Power 14 850W 28
- #59 ASUSASUS 850W ROG LOKI Platinum 28
- #60 HPEHPE P38995-B21 800W 27
Value Balanced
How much of that you get for today’s price.
#58 of 95 currently priced Power supplies
- #55 MSIMSI MAG A1200PLS PCIE5 38
- #56 ThermaltakeThermaltake Toughpower GT Snow 1200W 38
- #57 ThermaltakeThermaltake Toughpower GF A3 Gold 1050W 37
- #58 ThermaltakeThermaltake Toughpower SFX Platinum 850W 37
- #59 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 36
- #60 NZXTNZXT C1000 Gold Core 34
- #61 ASUSASUS TUF Gaming 1000W Gold 34
Performance Gaming PC
How much it can do. Price plays no part in this ranking.
#57 of 94 graded Power supplies
- #54 Cooler MasterCooler Master V850 SFX Gold 28
- #55 NZXTNZXT C850 SFX Gold 28
- #56 GigabyteGigabyte 850W GP-P850GM 28
- #57 ThermaltakeThermaltake Toughpower SFX Platinum 850W 28
- #58 be quiet!be quiet! Dark Power 14 850W 28
- #59 ASUSASUS 850W ROG LOKI Platinum 28
- #60 HPEHPE P38995-B21 800W 27
Value Gaming PC
How much of that you get for today’s price.
#58 of 95 currently priced Power supplies
- #55 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 38
- #56 CorsairCorsair RM1000x Shift 38
- #57 MSIMSI MAG A1200PLS PCIE5 37
- #58 ThermaltakeThermaltake Toughpower SFX Platinum 850W 37
- #59 ThermaltakeThermaltake Toughpower GF A3 Gold 1050W 35
- #60 NZXTNZXT C1000 Gold Core 34
- #61 GigabyteGigabyte 1000W GP-UD1000GM PG5 ICE 34
Performance High-end GPU
How much it can do. Price plays no part in this ranking.
#57 of 94 graded Power supplies
- #54 Cooler MasterCooler Master V850 SFX Gold 28
- #55 NZXTNZXT C850 SFX Gold 28
- #56 GigabyteGigabyte 850W GP-P850GM 28
- #57 ThermaltakeThermaltake Toughpower SFX Platinum 850W 28
- #58 be quiet!be quiet! Dark Power 14 850W 28
- #59 ASUSASUS 850W ROG LOKI Platinum 28
- #60 HPEHPE P38995-B21 800W 27
Value High-end GPU
How much of that you get for today’s price.
#47 of 95 currently priced Power supplies
- #44 ThermaltakeThermaltake Smart BM3 Bronze 750W 69
- #45 ThermaltakeThermaltake Smart BM3 Bronze 850W 68
- #46 Super FlowerSuper Flower 750W Leadex III Gold 67
- #47 ThermaltakeThermaltake Toughpower SFX Platinum 850W 67
- #48 NZXTNZXT C1000 Gold Core 66
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 66
- #50 be quiet!be quiet! Dark Power 14 850W 64
Performance Small form factor
How much it can do. Price plays no part in this ranking.
#57 of 92 graded Power supplies
- #54 Cooler MasterCooler Master V850 SFX Gold 28
- #55 NZXTNZXT C850 SFX Gold 28
- #56 GigabyteGigabyte 850W GP-P850GM 28
- #57 ThermaltakeThermaltake Toughpower SFX Platinum 850W 28
- #58 be quiet!be quiet! Dark Power 14 850W 28
- #59 ASUSASUS 850W ROG LOKI Platinum 28
- #60 MontechMONTECH BETA 2 750W 25
Value Small form factor
How much of that you get for today’s price.
#41 of 95 currently priced Power supplies
- #38 NZXTNZXT C850 Gold ATX 3.1 44
- #39 Cooler MasterCooler Master MWE Gold 750 V3 43
- #40 NZXTNZXT C1000 Gold ATX 3.1 43
- #41 ThermaltakeThermaltake Toughpower SFX Platinum 850W 42
- #42 CorsairCorsair RM750x 42
- #43 Super FlowerSuper Flower 750W Leadex III Gold 42
- #44 CorsairCorsair RM850e White 42
Performance Workstation
How much it can do. Price plays no part in this ranking.
#19 of 88 graded Power supplies
- #16 ASUSASUS ROG Strix 1000W Platinum 83
- #17 ASUSASUS 1000W ROG Loki SFX-L 1000W Platinum 83
- #18 be quiet!be quiet! POWER ZONE 2 850W 83
- #19 ThermaltakeThermaltake Toughpower SFX Platinum 850W 83
- #20 ASUSASUS 850W ROG LOKI Platinum 83
- #21 HPEHPE P38995-B21 800W 83
- #22 ThermaltakeThermaltake Toughpower SFX Platinum 750W 83
Value Workstation
How much of that you get for today’s price.
#51 of 95 currently priced Power supplies
- #48 MSIMSI MAG A550BN 74
- #49 MSIMSI MAG A750GL PCIE5 II 73
- #50 MSIMSI MAG A650BN 72
- #51 ThermaltakeThermaltake Toughpower SFX Platinum 850W 72
- #52 CorsairCorsair HX1000i 72
- #53 ThermaltakeThermaltake Smart BM3 Bronze 750W 72
- #54 ASUSASUS TUF Gaming 1000W Gold 71
These ladders follow the preset scenario shown above. Your own weights re-score this product, not the whole field.
What it is good for
| Scenario | this productCapability grade · Value at current price | Higher capability | Higher Value with current priorities |
|---|---|---|---|
| Balanced (all-round)Weighted all-round view | GradeNo grade Value37 | Higher capability Super Flower 1300W Leadex III Gold 28 +53% capability · +2% price | Higher Value with current priorities Phanteks AMP GH 850W Black 75 +0% capability · -52% price |
| Gaming PCScenario capability | GradeS Value37 | Higher capability Super Flower 1300W Leadex III Gold S 30 +53% capability · +2% price | Higher Value with current priorities MONTECH BETA 2 850W S 76 +0% capability · -66% price |
| High-end GPUScenario capability | GradeB Value67 | Higher capability Super Flower 1300W Leadex III Gold S 59 +53% capability · +2% price | Higher Value with current priorities Phanteks AMP GH 850W Black B 95 +0% capability · -52% price |
| Small form factorScenario capability | GradeS Value42 | Higher capability Super Flower 1300W Leadex III Gold F 25 +53% capability · +2% price | Higher Value with current priorities MONTECH BETA 2 850W F 68 +0% capability · -66% price |
| Workstation & 24/7Scenario capability | GradeA Value72 | Higher capability HPE P03178-B21 1000W B 54 +20% capability · +5% price | Higher Value with current priorities be quiet! POWER ZONE 2 850W A 86 +0% capability · -15% price |
Balanced has no letter: it is a weighting preset, not a capability rubric. A grade answers “how well does this handle that job?” — price is never part of it. Relative Value puts the current market price back in.
Compare these grades with the full tier list
Trade-offs
Works well if
- Gaming PC is your main prioritygraded S for Gaming PC on the same rubric as the tier list
Consider other options if
- You want strong value with Balanced priorities specificallyat today's market no realistic price for this model reaches strong value with Balanced priorities — the calculation only gets there near $81, against a cheapest tracked $177
- Value for money matters more to you than this exact modelPhanteks AMP GH 850W Black holds Relative Value 75 against its 37 with Balanced priorities, at $85
Works well if
- Gaming PC is your main prioritygraded S for Gaming PC on the same rubric as the tier list
Consider other options if
- You want strong value for Gaming PC specificallyat today's market no realistic price for this model reaches strong value for Gaming PC — the calculation only gets there near $81, against a cheapest tracked $177
- Value for money matters more to you than this exact modelMONTECH BETA 2 850W holds Relative Value 76 against its 37 for Gaming PC, at $60
- You need more Rated output than 850 Wthis product is fixed at 850 W; Super Flower 1300W Leadex III Gold offers 1300 W inside the same budget
Works well if
- High-end GPU is your main prioritygraded B for High-end GPU on the same rubric as the tier list
- Strong-value threshold: ~$123$123 is where Relative Value reaches 80 for High-end GPU, in the 2026-11-02–2026-11-09 offer frame
Consider other options if
- Current price sits $54 above the strong-value threshold (~$123)cheapest tracked $177 against a $123 calculated threshold for High-end GPU
- Value for money matters more to you than this exact modelPhanteks AMP GH 850W Black holds Relative Value 95 against its 67 for High-end GPU, at $85
- You need more Rated output than 850 Wthis product is fixed at 850 W; Super Flower 1300W Leadex III Gold offers 1300 W inside the same budget
Works well if
- Small form factor is your main prioritygraded S for Small form factor on the same rubric as the tier list
Consider other options if
- You want strong value for Small form factor specificallyat today's market no realistic price for this model reaches strong value for Small form factor — the calculation only gets there near $94, against a cheapest tracked $177
- Value for money matters more to you than this exact modelMONTECH BETA 2 850W holds Relative Value 68 against its 42 for Small form factor, at $60
- You need more Rated output than 850 Wthis product is fixed at 850 W; Super Flower 1300W Leadex III Gold offers 1300 W inside the same budget
Works well if
- Workstation is your main prioritygraded A for Workstation on the same rubric as the tier list
- Strong-value threshold: ~$143$143 is where Relative Value reaches 80 for Workstation, in the 2026-11-02–2026-11-09 offer frame
Consider other options if
- Current price sits $34 above the strong-value threshold (~$143)cheapest tracked $177 against a $143 calculated threshold for Workstation
- Value for money matters more to you than this exact modelbe quiet! POWER ZONE 2 850W holds Relative Value 86 against its 72 for Workstation, at $150
- You need more Rated output than 850 Wthis product is fixed at 850 W; HPE P03178-B21 1000W offers 1000 W inside the same budget
Every line states the fact it was derived from, for the scenario selected above. Thresholds are calculated points on our value curve — information about where the maths turns, not instructions about what to pay.
Similar options to the Thermaltake Toughpower SFX Platinum 850W
Chosen for Balanced
Chosen for Gaming PC
Chosen for High-end GPU
Chosen for Small form factor
Chosen for Workstation
Alternatives stay near this product’s price range. Step-up options may exceed the standard budget envelope when the capability gain is meaningful.
More head-to-head comparisons in this category
Upgrade planner
Judge the change in the active scenario, then make the cash gap explicit.
Using page scenarioWhat are you upgrading from? These are the axes we compare on, and where this product stands in the current market.
Capability differences are expressed as tiers and index points, not as benchmark percentages we did not measure.
Specifications and compatibility
What this product is, and what to check before it goes into your build.
Power / Interface
- Rated output
- 850 W
- +12 V output
- 850 W
- 80 PLUS rating
- 80 PLUS Platinum
- ATX standard
- ATX 3.1
Show all specifications
Warranty
- Warranty
- 7 years
- Manufacturer part number
- PS-STP-0850FNFAPU-1
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-11-02–2026-11-09
What to check in your build
A case that takes SFX power supplies
The size is set by the case: ATX cases take ATX units, small cases take SFX (some also SFX-L).
103 mm of power-supply bay, plus room for the cables
Case makers list the longest power supply the bay takes; modular cables need extra space behind the unit.
Found an error? Report this specification Email the field, corrected value and an optional source.
Compatibility guidance is practical help, not a score. Missing data is shown as unknown, never invented.
Summary
Thermaltake Toughpower SFX Platinum 850W offers a balanced view across an all-round mix of priorities. It ranks #57 by capability in the current modelled field. Its clearest measured strength is rated output 850. Phanteks AMP GH 850W Black currently clears the same practical bar with stronger Relative Value.
Thermaltake Toughpower SFX Platinum 850W offers S-grade capability for Gaming PC. It ranks #57 by capability in the current modelled field. Its clearest measured strength is rated output 850. Phanteks AMP GH 850W Black currently clears the same practical bar with stronger Relative Value.
Thermaltake Toughpower SFX Platinum 850W offers B-grade capability for High-end GPU. It ranks #57 by capability in the current modelled field. Its clearest measured strength is rated output 850. Phanteks AMP GH 850W Black currently clears the same practical bar with stronger Relative Value.
Thermaltake Toughpower SFX Platinum 850W offers S-grade capability for Small form factor. It ranks #57 by capability in the current modelled field. Its clearest measured strength is rated output 850. Thermaltake Toughpower SFX Platinum 1000W currently clears the same practical bar with stronger Relative Value.
Thermaltake Toughpower SFX Platinum 850W offers A-grade capability for Workstation. It ranks #19 by capability in the current modelled field. Its clearest measured strength is rated output 850. be quiet! POWER ZONE 2 850W currently clears the same practical bar with stronger Relative Value.
FAQ
Why does Relative Value change when I choose another scenario?
Each scenario changes the weights applied to capability, price and the other published factors. The hardware facts stay fixed, but the value question changes, so its score and rank can change too.
Why can Amazon appear without a tracked price?
Amazon listing snapshots can participate in Value while fresh. We show Check on Amazon instead of its price; confirm the current price and availability at the store. When no current listing snapshot exists, Amazon is a search link only.
Useful links & sources
offer frame 2026-11-02–2026-11-09 · formula psu-value-v6.1 · facts facts-2026-11-09 · Relative Value is an estimate from our current dataset, the selected weights and dated market prices — not an official product rating and not a price forecast. Target prices are calculation thresholds, not predictions. Methodology We are not a shop. Affiliate links may earn us a commission; they never change the calculations or the ranking.