ASRock PRO-650B
The current ASRock PRO-650B price from retailers, its key specifications, and how it performs for each job.
ASRock · PSU · ATX 3.x
Retailer photo of ASRock PRO-650B. View this offer in Where to buy
Trade-offs: Not the pick if Small form factor is your main use
- Rated output
- 650 W
- 80 PLUS rating
- 80 PLUS Bronze
- Size
- ATX
- Modularity
- Non-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 $40 the ASRock PRO-650B is priced in line with its $40 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
ASRock PRO-650B: 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 |
|---|---|---|---|---|---|---|
| ASRock PRO-650B | Newegg | New | $40 | 90 | 2026-11-08 | View offer → |
| ASRock PRO-650BMultiple 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.
#81 of 94 graded Power supplies
- #78 ASUSASUS 750W ROG LOKI Platinum 25
- #79 GigabyteGigabyte 750W GP-UD750GM PG5 25
- #80 ThermaltakeThermaltake Smart 700W 23
- #81 ASRockASRock PRO-650B 22
- #82 ASRockASRock PRO-650G 22
- #83 MontechMONTECH BETA 2 650W 22
- #84 ASRockASRock Challenger CL-650G 22
Value Balanced
How much of that you get for today’s price.
#3 of 95 currently priced Power supplies
- #1 ASRockASRock PRO-650G 100
- #2 ASRockASRock PRO-750G 93
- #3 ASRockASRock PRO-650B 90
- #4 MontechMONTECH BETA 2 550W 77
- #5 ThermaltakeThermaltake Toughpower GF A3 Gold 750W 75
- #6 ThermaltakeThermaltake Smart 500W 75
- #7 PhanteksPhanteks AMP GH 850W Black 75
Performance Gaming PC
How much it can do. Price plays no part in this ranking.
#81 of 94 graded Power supplies
- #78 ASUSASUS 750W ROG LOKI Platinum 25
- #79 GigabyteGigabyte 750W GP-UD750GM PG5 25
- #80 ThermaltakeThermaltake Smart 700W 23
- #81 ASRockASRock PRO-650B 22
- #82 ASRockASRock PRO-650G 22
- #83 MontechMONTECH BETA 2 650W 22
- #84 ASRockASRock Challenger CL-650G 22
Value Gaming PC
How much of that you get for today’s price.
#3 of 95 currently priced Power supplies
- #1 ASRockASRock PRO-650G 100
- #2 ASRockASRock PRO-750G 98
- #3 ASRockASRock PRO-650B 93
- #4 MontechMONTECH BETA 2 550W 80
- #5 MontechMONTECH BETA 2 850W 76
- #6 PhanteksPhanteks AMP GH 850W Black 75
- #7 MontechMONTECH BETA 2 650W 75
Performance High-end GPU
How much it can do. Price plays no part in this ranking.
#81 of 94 graded Power supplies
- #78 ASUSASUS 750W ROG LOKI Platinum 25
- #79 GigabyteGigabyte 750W GP-UD750GM PG5 25
- #80 ThermaltakeThermaltake Smart 700W 23
- #81 ASRockASRock PRO-650B 22
- #82 ASRockASRock PRO-650G 22
- #83 MontechMONTECH BETA 2 650W 22
- #84 ASRockASRock Challenger CL-650G 22
Value High-end GPU
How much of that you get for today’s price.
#11 of 95 currently priced Power supplies
- #8 ThermaltakeThermaltake Toughpower GF A3 Gold 750W 84
- #9 NZXTNZXT C1000 Gold ATX 3.1 84
- #10 CorsairCorsair CX750M ATX 3.1 84
- #11 ASRockASRock PRO-650B 84
- #12 ThermaltakeThermaltake Toughpower GT 1200W 83
- #13 ThermaltakeThermaltake Toughpower GT Snow 850W 82
- #14 MSIMSI MAG A850GL PCIE5 White 82
Performance Small form factor
How much it can do. Price plays no part in this ranking.
#79 of 92 graded Power supplies
- #76 CorsairCorsair RM750x Shift White 25
- #77 ASUSASUS 750W ROG LOKI Platinum 25
- #78 ThermaltakeThermaltake Smart 700W 23
- #79 ASRockASRock PRO-650B 22
- #80 ASRockASRock PRO-650G 22
- #81 MontechMONTECH BETA 2 650W 22
- #82 ASRockASRock Challenger CL-650G 22
Value Small form factor
How much of that you get for today’s price.
#2 of 95 currently priced Power supplies
- #1 ASRockASRock PRO-650G 100
- #2 ASRockASRock PRO-650B 97
- #3 ASRockASRock PRO-750G 87
- #4 ThermaltakeThermaltake Smart 500W 87
- #5 ThermaltakeThermaltake Smart 600W 83
- #6 MontechMONTECH BETA 2 550W 82
- #7 MontechMONTECH BETA 2 650W 75
Performance Workstation
How much it can do. Price plays no part in this ranking.
#78 of 88 graded Power supplies
- #75 CorsairCorsair CX750 33
- #76 CorsairCorsair CX750M ATX 3.1 33
- #77 ThermaltakeThermaltake Smart BM3 Bronze 750W 33
- #78 ASRockASRock PRO-650B 33
- #79 MontechMONTECH BETA 2 650W 33
- #80 MSIMSI MAG A650BN 33
- #81 CorsairCorsair CX650 33
Value Workstation
How much of that you get for today’s price.
#18 of 95 currently priced Power supplies
- #15 CorsairCorsair RM750x 85
- #16 NZXTNZXT C850 Gold Core 85
- #17 ThermaltakeThermaltake Toughpower SFX Platinum 750W 85
- #18 ASRockASRock PRO-650B 84
- #19 be quiet!be quiet! POWER ZONE 2 1000W 84
- #20 be quiet!be quiet! Pure Power 13 M 1000W 83
- #21 CorsairCorsair CX750M ATX 3.1 83
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 |
|---|---|---|
| Balanced (all-round)Weighted all-round view | GradeNo grade Value90 | — |
| Gaming PCScenario capability | GradeB Value93 | — |
| High-end GPUScenario capability | GradeD Value84 | — |
| Small form factorScenario capability | GradeF Value97 | — |
| Workstation & 24/7Scenario capability | GradeC Value84 | Higher capability ASRock PRO-650G B 95 +100% capability · +13% 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 B for Gaming PC on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked $40 against a $45 threshold with Balanced priorities
- Nothing in this budget scores better with Balanced prioritiesno graded product within the 10% budget envelope around $40 reaches a higher Relative Value with Balanced priorities
Consider other options if
- Not the pick if Small form factor is your main useit grades only F there
Works well if
- Gaming PC is your main prioritygraded B for Gaming PC on the same rubric as the tier list
- Today's price already clears the strong-value markcheapest tracked $40 against a $47 threshold for Gaming PC
- Nothing in this budget scores better for Gaming PCno graded product within the 10% budget envelope around $40 reaches a higher Relative Value for Gaming PC
Consider other options if
- 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
- High-end GPU is not actually your main job — Gaming PC isit grades D for High-end GPU, but B for Gaming PC
- Today's price already clears the strong-value markcheapest tracked $40 against a $44 threshold for High-end GPU
Consider other options if
- Not the pick if High-end GPU is your main useit grades D there; ASRock PRO-650G grades D at $45
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 B for Gaming PC
- Today's price already clears the strong-value markcheapest tracked $40 against a $48 threshold for Small form factor
Consider other options if
- Not the pick if Small form factor is your main useit grades F there; ASRock PRO-650G grades F at $45
- You are buying for Small form factor and want no asterisksthe rubric caps this grade: atx unit: it does not fit an sfx case
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
- Workstation is not actually your main job — Gaming PC isit grades C for Workstation, but B for Gaming PC
- Today's price already clears the strong-value markcheapest tracked $40 against a $44 threshold for Workstation
Consider other options if
- Not the pick if Workstation is your main useit grades C there; ASRock PRO-650G grades B at $45
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 ASRock PRO-650B
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
- 650 W
- +12 V output
- 649.2 W
- 80 PLUS rating
- 80 PLUS Bronze
- ATX standard
- ATX 3.1
Show all specifications
Warranty
- Warranty
- 3 years
- Manufacturer part number
- PRO-650B
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).
140 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
ASRock PRO-650B offers a balanced view across an all-round mix of priorities. It ranks #81 by capability in the current modelled field. Its clearest measured strength is rated output 650. The main limitation appears when Small form factor becomes the priority, where it grades F.
ASRock PRO-650B offers B-grade capability for Gaming PC. It ranks #81 by capability in the current modelled field. Its clearest measured strength is rated output 650. The main limitation appears when Small form factor becomes the priority, where it grades F.
ASRock PRO-650B offers D-grade capability for High-end GPU. It ranks #81 by capability in the current modelled field. Its clearest measured strength is rated output 650. The D grade is the decisive limitation for this workload.
ASRock PRO-650B offers F-grade capability for Small form factor. It ranks #79 by capability in the current modelled field. Its clearest measured strength is rated output 650. The F grade is the decisive limitation for this workload.
ASRock PRO-650B offers C-grade capability for Workstation. It ranks #78 by capability in the current modelled field. Its clearest measured strength is rated output 650. The C grade is the decisive limitation for this workload.
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.