ASUS Prime B450M-A II
The current ASUS Prime B450M-A II price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · AM4
Retailer photo of ASUS Prime B450M-A II (Micro ATX). View this offer in Where to buy
Trade-offs: you want strong value with Balanced priorities specifically
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 $204 the ASUS Prime B450M-A II is priced in line with its $204 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
ASUS Prime B450M-A II: 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 |
|---|---|---|---|---|---|---|
| ASUS Prime B450M-A II (Micro ATX) | Newegg | New | $204 | 22 | 2026-10-29 | View offer → |
| ASUS Prime B450M-A IIMultiple 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.
#500 of 972 graded motherboards
- #497 ASRockASRock B450M-HDV 62
- #498 ASUSASUS 90MB0Z50-M0EAY0 62
- #499 ASUSASUS B450-PLUS GAMING 62
- #500 ASUSASUS Prime B450M-A II 62
- #501 ASUSASUS PRIME B450M-A CSM 62
- #502 ASUSASUS PRIME B450M-K II 62
- #503 ASUSASUS STRIX B450-F GAMING 62
Value Balanced
How much of that you get for today’s price.
#704 of 1020 currently priced motherboards
- #701 GigabyteGigabyte B760M AORUS ELITE WIFI6E GEN5 22
- #702 MSIMSI MAG B760M MORTAR II 22
- #703 MSIMSI PRO B660M-G DDR4 22
- #704 ASUSASUS Prime B450M-A II 22
- #705 GigabyteGigabyte A620M S2H 22
- #706 NZXTNZXT N9-Z89XT-B1 22
- #707 MSIMSI B450 TOMAHAWK 22
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#404 of 955 graded motherboards
- #401 GigabyteGigabyte B850M D3HP 81
- #402 ASUSASUS ROG Crosshair VIII Dark Hero 81
- #403 ASUSASUS PRIME Z790M-PLUS 81
- #404 ASUSASUS Prime B450M-A II 80
- #405 ASUSASUS PRIME B450M-A CSM 80
- #406 ASUSASUS CROSSHAIR VI EXTREME 80
- #407 ASUSASUS CROSSHAIR VI HERO 80
Value Gaming Build
How much of that you get for today’s price.
#668 of 1020 currently priced motherboards
- #665 GigabyteGigabyte B760 AORUS ELITE 18
- #666 ASUSASUS Pro B760M-CT-CSM 18
- #667 GigabyteGigabyte B860M EAGLE WIFI6 V2 18
- #668 ASUSASUS Prime B450M-A II 18
- #669 ASUSASUS ROG MAXIMUS X HERO 18
- #670 MSIMSI Z370M GAMING PRO AC 18
- #671 ASUSASUS PRIME H810M-A WIFI-CSM 18
Performance Workstation
How much it can do. Price plays no part in this ranking.
#561 of 944 graded motherboards
- #558 GigabyteGigabyte Z690 AORUS ELITE AX DDR4 56
- #559 GigabyteGigabyte Z690 GAMING X DDR4 56
- #560 GigabyteGigabyte Z690 UD AX DDR4 56
- #561 ASUSASUS Prime B450M-A II 55
- #562 ASUSASUS PRIME B450M-A CSM 55
- #563 ASRockASRock B550 PRO4 55
- #564 GigabyteGigabyte B650M D3HP 55
Value Workstation
How much of that you get for today’s price.
#722 of 1020 currently priced motherboards
- #719 GigabyteGigabyte GA-AB350-GAMING 3 7
- #720 ASUSASUS TUF GAMING B560M-PLUS WIFI 7
- #721 GigabyteGigabyte B760I AORUS PRO 7
- #722 ASUSASUS Prime B450M-A II 7
- #723 ASUSASUS Z170-A 7
- #724 ASUSASUS ROG STRIX B460-H GAMING 7
- #725 GigabyteGigabyte GA-Z270P-D3 7
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#204 of 972 graded motherboards
- #201 MSIMSI MAG B760M MORTAR WIFI II 70
- #202 ASUSASUS PRIME Z790M-PLUS 70
- #203 ASRockASRock B450 STEEL LEGEND 69
- #204 ASUSASUS Prime B450M-A II 69
- #205 ASUSASUS PRIME B450M-A CSM 69
- #206 ASUSASUS PRIME B450M-K II 69
- #207 ASUSASUS TUF B450M-PRO GAMING 69
Value Small-Case Fit
How much of that you get for today’s price.
#409 of 1020 currently priced motherboards
- #406 ASUSASUS PRIME B760M-R D4 25
- #407 ASUSASUS ProArt-B850-CREATOR-WIFI-NEO 25
- #408 GigabyteGigabyte X870E AORUS PRO X3D 25
- #409 ASUSASUS Prime B450M-A II 24
- #410 GigabyteGigabyte B760M D2H DDR4 24
- #411 MSIMSI PRO A620AM-B EVO 24
- #412 MSIMSI MEG X570 UNIFY 24
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 Value22 | Higher capability MSI MAG X870E GAMING MAX WIFI 10 +61% capability · -7% price | Higher Value with current priorities Gigabyte X870 GAMING WIFI6 100 +44% capability · -22% price |
| Gaming BuildScenario capability | GradeB Value18 | Higher capability ASUS B650E MAX GAMING WIFI S 72 +16% capability · -12% price | Higher Value with current priorities Gigabyte X870 GAMING WIFI6 A 100 +14% capability · -22% price |
| WorkstationScenario capability | GradeD Value7 | Higher capability MSI X870E GAMING PLUS WIFI A 78 +72% capability · -7% price | Higher Value with current priorities Gigabyte X870 GAMING WIFI6 B 87 +55% capability · -22% price |
| Small-Case FitScenario capability | GradeC Value24 | Higher capability ASUS ROG STRIX Z490-I GAMING S 45 +43% capability · -12% price | Higher Value with current priorities ASUS b650em-max-gaming-wifi C 100 +3% capability · -41% 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
Browse shortlists for different uses
Trade-offs
Works well if
- Gaming Build is your main prioritygraded B for Gaming Build on the same rubric as the tier list
Consider other options if
- You want strong value with Balanced priorities specificallycompeting products deliver so much more per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- Value for money matters more to you than this exact modelGigabyte X870 GAMING WIFI6 holds Relative Value 100 against its 22 with Balanced priorities, at $160
- Not the pick if Workstation is your main useit grades only D there
Works well if
- Gaming Build is your main prioritygraded B for Gaming Build on the same rubric as the tier list
Consider other options if
- You want strong value for Gaming Build specificallycompeting products deliver so much more for Gaming Build per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- Value for money matters more to you than this exact modelGigabyte X870 GAMING WIFI6 holds Relative Value 100 against its 18 for Gaming Build, at $160
- Not the pick if Workstation is your main useit grades only D 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
- Workstation is not actually your main job — Gaming Build isit grades D for Workstation, but B for Gaming Build
Consider other options if
- Not the pick if Workstation is your main useit grades D there; MSI X870E GAMING PLUS WIFI grades A at $190
- Value for money matters more to you than this exact modelGigabyte X870 GAMING WIFI6 holds Relative Value 87 against its 7 for Workstation, at $160
- You are buying for Workstation and want no asterisksthe rubric caps this grade: expansion data not collected for this board — graded on platform only
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-Case Fit is not actually your main job — Gaming Build isit grades C for Small-Case Fit, but B for Gaming Build
Consider other options if
- Not the pick if Small-Case Fit is your main useit grades C there; ASUS ROG STRIX Z490-I GAMING grades S at $179
- You want strong value for Small-Case Fit specificallycompeting products deliver so much more for Small-Case Fit per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- Value for money matters more to you than this exact modelASUS b650em-max-gaming-wifi holds Relative Value 100 against its 24 for Small-Case Fit, at $120
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 ASUS Prime B450M-A II
Chosen for Balanced
Chosen for Gaming Build
Chosen for Workstation
Chosen for Small-Case Fit
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.
Memory
Power / Interface
Physical / Outputs
- M.2 slots
- 2
- SATA ports
- 6
- PCIe ×16 slots
- 1
- USB ports
- 3
- Ethernet
- 1 Gb/s
Show all specifications
Features
- RAID
- Yes
Warranty
- Warranty
- 3 years
- Manufacturer part number
- Prime B450M-A II
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-10-23–2026-10-29
What to check in your build
AM4
Takes AM4 processors — a matching socket is necessary but not sufficient, check the vendor's CPU support list
Micro ATX
Micro ATX — the case must accept this size
DDR4 · 4 slots · up to 128 GB
Takes DDR4 memory only — another DDR generation does not fit the slots
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
ASUS Prime B450M-A II offers a balanced view across an all-round mix of priorities. It ranks #500 by capability in the current modelled field. Its clearest measured strength is feature score 45. Gigabyte X870 GAMING WIFI6 currently clears the same practical bar with stronger Relative Value.
ASUS Prime B450M-A II offers B-grade capability for Gaming Build. It ranks #404 by capability in the current modelled field. Its clearest measured strength is feature score 45. Gigabyte X870 GAMING WIFI6 currently clears the same practical bar with stronger Relative Value.
ASUS Prime B450M-A II offers D-grade capability for Workstation. It ranks #561 by capability in the current modelled field. Its clearest measured strength is feature score 45. The D grade is the decisive limitation for this workload.
ASUS Prime B450M-A II offers C-grade capability for Small-Case Fit. It ranks #204 by capability in the current modelled field. Its clearest measured strength is feature score 45. 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 2026-10-23–2026-10-29 · formula mobo-value-v1.4 · facts facts-2026-10-29 · 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.