Retailer photo of Thermaltake Toughpower SFX Platinum 850W. View this offer in Where to buy
Thermaltake · PSU · SFX
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.
Works well for: Gaming PC, Small form factor, Workstation & 24/7
Trade-offs: Value for money matters more to you than this exact model
- 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: LowAt $130 the Thermaltake Toughpower SFX Platinum 850W is priced in line with its $130 representative market level. Only one retailer currently backs that price, so the level is a single data point rather than a market.
Limited market: only one retailer currently has a verified offer, so treat this price as a single data point.
Prices & availability
Thermaltake Toughpower SFX Platinum 850W: current price and offers
Compare the offers we track for this model, across variants and retailers.
1 tracked offers · 1 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| Thermaltake Toughpower SFX Platinum 850W | Newegg | New | $130 | 80 | 2026-10-16 | 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.
#41 of 77 graded Power supplies
- #38 CorsairCorsair RM850e White 52
- #39 be quiet!be quiet! POWER ZONE 2 850W 52
- #40 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 52
- #41 ThermaltakeThermaltake Toughpower SFX Platinum 850W 52
- #42 CorsairCorsair RM850x 52
- #43 Cooler MasterCooler Master MWE Gold 850 V3 52
- #44 Cooler MasterCooler Master V850 SFX Gold 52
Value Balanced
How much of that you get for today’s price.
#27 of 77 currently priced Power supplies
- #24 CorsairCorsair RM750x 82
- #25 ThermaltakeThermaltake Toughpower SFX Platinum 750W 81
- #26 ThermaltakeThermaltake Toughpower GT Snow 750W 81
- #27 ThermaltakeThermaltake Toughpower SFX Platinum 850W 80
- #28 be quiet!be quiet! PURE POWER 13 M 1200W 79
- #29 MSIMSI PRO A1000PL PCIE5 79
- #30 CorsairCorsair RM850x 78
Performance Gaming PC
How much it can do. Price plays no part in this ranking.
#41 of 77 graded Power supplies
- #38 CorsairCorsair RM850e White 52
- #39 be quiet!be quiet! POWER ZONE 2 850W 52
- #40 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 52
- #41 ThermaltakeThermaltake Toughpower SFX Platinum 850W 52
- #42 CorsairCorsair RM850x 52
- #43 Cooler MasterCooler Master MWE Gold 850 V3 52
- #44 Cooler MasterCooler Master V850 SFX Gold 52
Value Gaming PC
How much of that you get for today’s price.
#27 of 77 currently priced Power supplies
- #24 ASRockASRock PRO-650G 82
- #25 CorsairCorsair RM750x 82
- #26 ThermaltakeThermaltake Toughpower SFX Platinum 750W 82
- #27 ThermaltakeThermaltake Toughpower SFX Platinum 850W 81
- #28 be quiet!be quiet! PURE POWER 13 M 1200W 81
- #29 MSIMSI PRO A1000PL PCIE5 80
- #30 RosewillRosewill VSB650 80
Performance High-end GPU
How much it can do. Price plays no part in this ranking.
#41 of 77 graded Power supplies
- #38 CorsairCorsair RM850e White 52
- #39 be quiet!be quiet! POWER ZONE 2 850W 52
- #40 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 52
- #41 ThermaltakeThermaltake Toughpower SFX Platinum 850W 52
- #42 CorsairCorsair RM850x 52
- #43 Cooler MasterCooler Master MWE Gold 850 V3 52
- #44 Cooler MasterCooler Master V850 SFX Gold 52
Value High-end GPU
How much of that you get for today’s price.
#31 of 77 currently priced Power supplies
- #28 ThermaltakeThermaltake Toughpower GT Snow 1000W 78
- #29 be quiet!be quiet! Dark Power 14 850W 77
- #30 CorsairCorsair RM850x 77
- #31 ThermaltakeThermaltake Toughpower SFX Platinum 850W 77
- #32 ASUSASUS ROG Strix 1000W Platinum 76
- #33 CorsairCorsair HX1000i 76
- #34 Cooler MasterCooler Master MWE Gold 850 V3 76
Performance Small form factor
How much it can do. Price plays no part in this ranking.
#41 of 77 graded Power supplies
- #38 CorsairCorsair RM850e White 52
- #39 be quiet!be quiet! POWER ZONE 2 850W 52
- #40 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 52
- #41 ThermaltakeThermaltake Toughpower SFX Platinum 850W 52
- #42 CorsairCorsair RM850x 52
- #43 Cooler MasterCooler Master MWE Gold 850 V3 52
- #44 Cooler MasterCooler Master V850 SFX Gold 52
Value Small form factor
How much of that you get for today’s price.
#1 of 77 currently priced Power supplies
- #1 ThermaltakeThermaltake Toughpower SFX Platinum 850W 100
- #2 ThermaltakeThermaltake Toughpower SFX Platinum 750W 100
- #3 ThermaltakeThermaltake Toughpower SFX Platinum 1000W 99
- #4 Cooler MasterCooler Master V850 SFX Gold 79
- #5 PhanteksPhanteks AMP GH 850W Black 37
- #6 PhanteksPhanteks AMP GH 750W Black 37
- #7 ASRockASRock PRO-750G 36
Performance Workstation
How much it can do. Price plays no part in this ranking.
#15 of 77 graded Power supplies
- #12 ASUSASUS ROG Strix 1000W Platinum 83
- #13 CorsairCorsair HX1000i 83
- #14 be quiet!be quiet! POWER ZONE 2 850W 83
- #15 ThermaltakeThermaltake Toughpower SFX Platinum 850W 83
- #16 be quiet!be quiet! POWER ZONE 2 750W 83
- #17 ThermaltakeThermaltake Toughpower SFX Platinum 750W 83
- #18 ThermaltakeThermaltake Toughpower GF3 1650W Gold 67
Value Workstation
How much of that you get for today’s price.
#33 of 77 currently priced Power supplies
- #30 MSIMSI MAG A1250GL PCIE5 79
- #31 CorsairCorsair RM850x 79
- #32 Cooler MasterCooler Master MWE Gold 750 V3 78
- #33 ThermaltakeThermaltake Toughpower SFX Platinum 850W 78
- #34 Cooler MasterCooler Master MWE Gold 850 V3 78
- #35 CorsairCorsair RM750x 78
- #36 ThermaltakeThermaltake Toughpower SFX Platinum 750W 75
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 Value80 | Higher capability NZXT C1200 Gold ATX 3.1 93 +41% capability · -4% price | Higher Value with current priorities Phanteks AMP GH 850W Black 100 +0% capability · -35% price |
| Gaming PCScenario capability | GradeS Value81 | Higher capability NZXT C1200 Gold ATX 3.1 S 93 +41% capability · -4% price | Higher Value with current priorities Phanteks AMP GH 850W Black S 99 +0% capability · -35% price |
| High-end GPUScenario capability | GradeB Value77 | Higher capability Higher capability · Higher Value with current priorities NZXT C1200 Gold ATX 3.1 S 100 +41% capability · -4% price | |
| Small form factorScenario capability | GradeS Value100 | Higher capability NZXT C1200 Gold ATX 3.1 F 35 +41% capability · -4% price | — |
| Workstation & 24/7Scenario capability | GradeA Value78 | — | Higher Value with current priorities be quiet! POWER ZONE 2 750W B 99 +0% capability · -23% 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
- Today's price already clears the strong-value markcheapest tracked $130 against a $130 threshold with Balanced priorities
Consider other options if
- Value for money matters more to you than this exact modelPhanteks AMP GH 850W Black holds Relative Value 100 against its 80 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
- Today's price already clears the strong-value markcheapest tracked $130 against a $133 threshold for Gaming PC
Consider other options if
- Value for money matters more to you than this exact modelPhanteks AMP GH 850W Black holds Relative Value 99 against its 81 for Gaming PC, at $85
- You need more Rated output than 850 Wthis product is fixed at 850 W; NZXT C1200 Gold ATX 3.1 offers 1200 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: ~$115$115 is where Relative Value reaches 80 for High-end GPU, in the 2026-10-10–2026-10-17 offer frame
Consider other options if
- Current price sits $15 above the strong-value threshold (~$115)cheapest tracked $130 against a $115 calculated threshold for High-end GPU
- Value for money matters more to you than this exact modelNZXT C1200 Gold ATX 3.1 holds Relative Value 100 against its 77 for High-end GPU, at $125
- You need more Rated output than 850 Wthis product is fixed at 850 W; NZXT C1200 Gold ATX 3.1 offers 1200 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
- Today's price already clears the strong-value markcheapest tracked $130 against a $203 threshold for Small form factor
- Nothing in this budget scores better for Small form factorno graded product within the 10% budget envelope around $130 reaches a higher Relative Value for Small form factor
Consider other options if
- You need more Rated output than 850 Wthis product is fixed at 850 W; NZXT C1200 Gold ATX 3.1 offers 1200 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: ~$123$123 is where Relative Value reaches 80 for Workstation, in the 2026-10-10–2026-10-17 offer frame
Consider other options if
- Current price sits $7 above the strong-value threshold (~$123)cheapest tracked $130 against a $123 calculated threshold for Workstation
- Value for money matters more to you than this exact modelbe quiet! POWER ZONE 2 750W holds Relative Value 99 against its 78 for Workstation, at $100
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 2026-10-10–2026-10-17
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 #41 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 #41 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 #41 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 #41 by capability in the current modelled field. Its clearest measured strength is rated output 850.
Thermaltake Toughpower SFX Platinum 850W offers A-grade capability for Workstation. It ranks #15 by capability in the current modelled field. Its clearest measured strength is rated output 850.
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 is shown as a discovery link when we do not have a permitted verified price snapshot. It is excluded from price comparisons, rankings and Relative Value until a compliant tracked price exists.
Useful links & sources
offer frame 2026-10-10–2026-10-17 · formula psu-value-v1 · facts facts-2026-10-17 · 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.