Corsair RM850x
The current Corsair RM850x price from retailers, its key specifications, and how it performs for each job.
Corsair · PSU · ATX 3.x
Works well for: Gaming PC
Trade-offs: you want strong value with Balanced priorities specifically
- Rated output
- 850 W
- 80 PLUS rating
- 80 PLUS Gold
- Size
- ATX
- 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 $140 the Corsair RM850x is priced 3% below its $145 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
Corsair RM850x: 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 |
|---|---|---|---|---|---|---|
| Corsair RM850x | B&H | New | $140 | 47 | 2026-11-09 | View offer → |
| Corsair RM850x | CentralComputer | New | $150 | 44 | 2026-11-09 | View offer → |
| Corsair RM850xMultiple 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.
#51 of 94 graded Power supplies
- #48 CorsairCorsair RM850e White 28
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 28
- #50 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 28
- #51 CorsairCorsair RM850x 28
- #52 ASUSASUS ATX TUF-GAMING-850G 28
- #53 be quiet!be quiet! POWER ZONE 2 850W 28
- #54 Cooler MasterCooler Master V850 SFX Gold 28
Value Balanced
How much of that you get for today’s price.
#40 of 95 currently priced Power supplies
- #37 CorsairCorsair RM750x Shift 50
- #38 CorsairCorsair RM850e White 49
- #39 CorsairCorsair CX650 48
- #40 CorsairCorsair RM850x 47
- #41 be quiet!be quiet! POWER ZONE 2 850W 47
- #42 CorsairCorsair RM750x Shift White 46
- #43 be quiet!be quiet! Pure Power 13 M 1000W 46
Performance Gaming PC
How much it can do. Price plays no part in this ranking.
#51 of 94 graded Power supplies
- #48 CorsairCorsair RM850e White 28
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 28
- #50 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 28
- #51 CorsairCorsair RM850x 28
- #52 ASUSASUS ATX TUF-GAMING-850G 28
- #53 be quiet!be quiet! POWER ZONE 2 850W 28
- #54 Cooler MasterCooler Master V850 SFX Gold 28
Value Gaming PC
How much of that you get for today’s price.
#40 of 95 currently priced Power supplies
- #37 CorsairCorsair RM850e White 50
- #38 CorsairCorsair RM750x Shift 49
- #39 Super FlowerSuper Flower 750W Leadex III Gold 48
- #40 CorsairCorsair RM850x 47
- #41 CorsairCorsair RM750x Shift White 45
- #42 be quiet!be quiet! POWER ZONE 2 850W 45
- #43 be quiet!be quiet! Pure Power 13 M 1000W 45
Performance High-end GPU
How much it can do. Price plays no part in this ranking.
#51 of 94 graded Power supplies
- #48 CorsairCorsair RM850e White 28
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 28
- #50 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 28
- #51 CorsairCorsair RM850x 28
- #52 ASUSASUS ATX TUF-GAMING-850G 28
- #53 be quiet!be quiet! POWER ZONE 2 850W 28
- #54 Cooler MasterCooler Master V850 SFX Gold 28
Value High-end GPU
How much of that you get for today’s price.
#30 of 95 currently priced Power supplies
- #27 be quiet!be quiet! Pure Power 13 M 1000W 77
- #28 CorsairCorsair RM850e White 77
- #29 CorsairCorsair RM750x Shift 76
- #30 CorsairCorsair RM850x 76
- #31 be quiet!be quiet! POWER ZONE 2 850W 76
- #32 ThermaltakeThermaltake Toughpower SFX Platinum 1000W 76
- #33 MontechMONTECH BETA 2 550W 75
Performance Small form factor
How much it can do. Price plays no part in this ranking.
#51 of 92 graded Power supplies
- #48 CorsairCorsair RM850e White 28
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 28
- #50 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 28
- #51 CorsairCorsair RM850x 28
- #52 ASUSASUS ATX TUF-GAMING-850G 28
- #53 be quiet!be quiet! POWER ZONE 2 850W 28
- #54 Cooler MasterCooler Master V850 SFX Gold 28
Value Small form factor
How much of that you get for today’s price.
#47 of 95 currently priced Power supplies
- #44 CorsairCorsair RM850e White 42
- #45 CorsairCorsair RM750x Shift 40
- #46 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 39
- #47 CorsairCorsair RM850x 38
- #48 ASUSASUS 750W ROG LOKI Platinum 38
- #49 CorsairCorsair RM750x Shift White 37
- #50 GigabyteGigabyte 450W GP-P450B 37
Performance Workstation
How much it can do. Price plays no part in this ranking.
#51 of 88 graded Power supplies
- #48 CorsairCorsair RM850e White 67
- #49 ThermaltakeThermaltake Toughpower GF A3 Gold 850W 67
- #50 Super FlowerSuper Flower 850W Leadex III Gold ATX 3.1 ) 67
- #51 CorsairCorsair RM850x 67
- #52 Cooler MasterCooler Master V850 SFX Gold 67
- #53 NZXTNZXT C850 SFX Gold 67
- #54 GigabyteGigabyte 850W GP-P850GM 67
Value Workstation
How much of that you get for today’s price.
#24 of 95 currently priced Power supplies
- #21 CorsairCorsair CX750M ATX 3.1 83
- #22 CorsairCorsair RM750x Shift 83
- #23 MSIMSI MAG A1250GL PCIE5 83
- #24 CorsairCorsair RM850x 82
- #25 ThermaltakeThermaltake Toughpower GT Snow 850W 82
- #26 ThermaltakeThermaltake Toughpower SFX Platinum 1000W 82
- #27 ThermaltakeThermaltake Toughpower GT 1200W 82
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 Value47 | Higher capability Thermaltake Toughpower GT 1200W 52 +41% capability · -14% price | Higher Value with current priorities Phanteks AMP GH 850W Black 75 +0% capability · -39% price |
| Gaming PCScenario capability | GradeS Value47 | Higher capability Thermaltake Toughpower GT 1200W S 53 +41% capability · -14% price | Higher Value with current priorities MONTECH BETA 2 850W S 76 +0% capability · -57% price |
| High-end GPUScenario capability | GradeB Value76 | Higher capability Thermaltake Toughpower GT 1200W S 83 +41% capability · -14% price | Higher Value with current priorities Phanteks AMP GH 850W Black B 95 +0% capability · -39% price |
| Small form factorScenario capability | GradeF Value38 | Higher capability Thermaltake Toughpower GT 1200W F 44 +41% capability · -14% price | Higher Value with current priorities MONTECH BETA 2 850W F 68 +0% capability · -57% price |
| Workstation & 24/7Scenario capability | GradeB Value82 | Higher capability HPE P38995-B21 800W B 59 +25% capability · -18% price | Higher Value with current priorities Phanteks AMP GH 850W Black B 100 +0% capability · -39% 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 $83, against a cheapest tracked $140
- Value for money matters more to you than this exact modelPhanteks AMP GH 850W Black holds Relative Value 75 against its 47 with Balanced priorities, at $85
- Not the pick if Small form factor is your main useit grades only F there
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 $82, against a cheapest tracked $140
- Value for money matters more to you than this exact modelMONTECH BETA 2 850W holds Relative Value 76 against its 47 for Gaming PC, at $60
- Not the pick if Small form factor is your main useit grades only F there
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: ~$126$126 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 $14 above the strong-value threshold (~$126)cheapest tracked $140 against a $126 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 76 for High-end GPU, at $85
- Not the pick if Small form factor is your main useit grades only F there
For the selected scenario this is not a strong fit — the grade above is the reason, and the models below suit it better.
Works well if
- Small form factor is not actually your main job — Gaming PC isit grades F for Small form factor, but S for Gaming PC
Consider other options if
- Not the pick if Small form factor is your main useit grades F there; Thermaltake Toughpower GT 1200W grades F at $120
- 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 $66, against a cheapest tracked $140
- Value for money matters more to you than this exact modelMONTECH BETA 2 850W holds Relative Value 68 against its 38 for Small form factor, at $60
Works well if
- Workstation is your main prioritygraded B for Workstation on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked $140 against a $149 threshold for Workstation
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 82 for Workstation, at $85
- Not the pick if Small form factor is your main useit grades only F there
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 Corsair RM850x
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
- 849.6 W
- 80 PLUS rating
- 80 PLUS Gold
- ATX standard
- ATX 3.1
Show all specifications
Warranty
- Warranty
- 10 years
- Manufacturer part number
- CP-9020270-NA
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 ATX power supplies
The size is set by the case: ATX cases take ATX units, small cases take SFX (some also SFX-L).
160 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
Corsair RM850x offers a balanced view across an all-round mix of priorities. It ranks #51 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.
Corsair RM850x offers S-grade capability for Gaming PC. It ranks #51 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.
Corsair RM850x offers B-grade capability for High-end GPU. It ranks #51 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.
Corsair RM850x offers F-grade capability for Small form factor. It ranks #51 by capability in the current modelled field. Its clearest measured strength is rated output 850. The F grade is the decisive limitation for this workload.
Corsair RM850x offers B-grade capability for Workstation. It ranks #51 by capability in the current modelled field. Its clearest measured strength is rated output 850. ASRock PRO-650G 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.