Retailer photo of ASUS PRIME B550M-A (Micro ATX). View this offer in Where to buy
ASUS · MOBO · AM4
ASUS PRIME B550M-A
The current ASUS PRIME B550M-A price from retailers, its key specifications, and how it performs for each job.
Trade-offs: you want strong value with Balanced priorities specifically
- Socket
- AM4
- Chipset
- AMD B550
- Form factor
- Micro ATX
- Memory
- DDR4 · 4 slots
- M.2 slots
- 2
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 $115 the ASUS PRIME B550M-A is priced in line with its $115 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 B550M-A: current price and offers
Compare the offers we track for this model, across variants and retailers.
2 tracked offers · 1 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| ASUS PRIME B550M-A (Micro ATX) | Newegg | New | $115 | 37 | 2026-10-16 | View offer → |
| ASUS PRIME B550M-AMultiple 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.
Show the other 1 tracked offers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| ASUS PRIME B550M-A (Micro ATX) | Newegg | Used | $175 | 28 | 2026-10-11 | View offer → |
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.
#514 of 936 graded motherboards
- #511 ASRockASRock B550M-HVS SE90-MXBMK0-A0UAYZ 62
- #512 ASRockASRock B550M-ITX 62
- #513 ASUSASUS PRIME B550-PLUS AC-HES 62
- #514 ASUSASUS PRIME B550M-A 62
- #515 ASUSASUS PRIME B550M-A AC 62
- #516 ASUSASUS PRIME B550M-A WIFI II 62
- #517 ASUSASUS PRIME B550M-K 62
Value Balanced
How much of that you get for today’s price.
#341 of 985 currently priced motherboards
- #338 MSIMSI MAG Z590 TORPEDO 38
- #339 GigabyteGigabyte Z890M AORUS ELITE WIFI7 38
- #340 ASUSASUS Strix Z370-E Gaming 38
- #341 ASUSASUS PRIME B550M-A 37
- #342 MSIMSI PRO B760-P II 37
- #343 ASUSASUS PRIME Z690M-PLUS D4 37
- #344 ASUSASUS B860M-BRO 37
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#612 of 917 graded motherboards
- #609 ASUSASUS PRIME B760M-A WIFI D4 73
- #610 MSIMSI B760 GAMING PLUS WIFI 73
- #611 MSIMSI PRO B760-P II 73
- #612 ASUSASUS PRIME B550M-A 72
- #613 ASUSASUS PRIME B550M-A AC 72
- #614 ASUSASUS PRIME B550M-A WIFI II 72
- #615 ASRockASRock H810M-X 72
Value Gaming Build
How much of that you get for today’s price.
#512 of 985 currently priced motherboards
- #509 ASUSASUS TUF GAMING B450M-PRO II 26
- #510 ASUSASUS TUF GAMING A620M-PLUS WIFI 26
- #511 GigabyteGigabyte Z590 VISION D 26
- #512 ASUSASUS PRIME B550M-A 26
- #513 ASUSASUS ROG STRIX B550-E GAMING 26
- #514 GigabyteGigabyte B860M AORUS PRO WIFI7 26
- #515 MSIMSI PRO B860-P 26
Performance Workstation
How much it can do. Price plays no part in this ranking.
#665 of 907 graded motherboards
- #662 ASUSASUS ROG STRIX B460-H GAMING 43
- #663 ASUSASUS TUF GAMING B460M-PLUS 43
- #664 GigabyteGigabyte B660M DS3H DDR4 43
- #665 ASUSASUS PRIME B550M-A 42
- #666 ASUSASUS PRIME B550M-A AC 42
- #667 ASUSASUS PRIME B550M-A WIFI II 42
- #668 GigabyteGigabyte B550M AORUS ELITE AX 42
Value Workstation
How much of that you get for today’s price.
#629 of 985 currently priced motherboards
- #626 ASUSASUS Crosshair VII Hero 10
- #627 ASUSASUS PRIME B660M-A D4 10
- #628 MSIMSI B850M GAMING WIFI 10
- #629 ASUSASUS PRIME B550M-A 10
- #630 ASUSASUS Pro B760M-C-CSM 10
- #631 MSIMSI Z790MPOWER 10
- #632 ASUSASUS PRIME Z270M-PLUS 10
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#180 of 936 graded motherboards
- #177 MSIMSI MPG B760M EDGE TI WIFI 71
- #178 ASRockASRock H810M-X 71
- #179 MSIMSI PRO H810M-B 71
- #180 ASUSASUS PRIME B550M-A 70
- #181 ASUSASUS PRIME B550M-A AC 70
- #182 ASUSASUS PRIME B550M-A WIFI II 70
- #183 MSIMSI B550M PRO-VDH 70
Value Small-Case Fit
How much of that you get for today’s price.
#169 of 985 currently priced motherboards
- #166 ASUSASUS Pro WS B850M-ACE SE 36
- #167 ASUSASUS TUF GAMING B450M-PRO II 36
- #168 GigabyteGigabyte Z590I VISION D 36
- #169 ASUSASUS PRIME B550M-A 36
- #170 ASUSASUS PRIME Z890-P WIFI 36
- #171 MSIMSI B650M BOMBER WIFI 36
- #172 GigabyteGigabyte Z390 M GAMING 35
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 ASRock B850M-X R2.0 56 +25% capability · -1% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF 85 +25% capability · +1% price |
| Gaming BuildScenario capability | GradeC Value26 | Higher capability MSI PRO B650M-B A 29 +25% capability · +5% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF B 73 +17% capability · +1% price |
| WorkstationScenario capability | GradeD Value10 | Higher capability ASUS TUF GAMING B760-PLUS WIFI C 30 +70% capability · +13% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF C 48 +55% capability · +1% price |
| Small-Case FitScenario capability | GradeC Value36 | Higher capability ASRock A620AI WiFi S 68 +35% capability · +13% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF C 93 +7% capability · +1% 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 C for Gaming Build 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 $39, against a cheapest tracked $115
- Workstation is what you actually need it forit 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.
Consider other options if
- Gaming Build is what you actually need it forit grades C there; MSI PRO B650M-B grades A at $121
- 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
- You are buying for Gaming Build and want no asterisksthe rubric caps this grade: previous-generation socket — limited cpu upgrade path
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 C for Gaming Build
Consider other options if
- Workstation is what you actually need it forit grades D there; ASUS TUF GAMING B760-PLUS WIFI grades C at $130
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 C for Gaming Build
Consider other options if
- Small-Case Fit is what you actually need it forit grades C there; ASRock A620AI WiFi grades S at $131
- 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
- You are buying for Small-Case Fit and want no asterisksthe rubric caps this grade: micro atx — fits compact mid-size cases
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 B550M-A
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
- Type
- DDR4
- Slots
- 4
- Maximum
- 128 GB
- ECC support
- No
Power / Interface
- Socket
- AM4
- Chipset
- AMD B550
- Form factor
- Micro ATX
Physical / Outputs
- M.2 slots
- 2
- SATA ports
- 4
- PCIe ×16 slots
- 1
- USB ports
- 3
- Ethernet
- 1 Gb/s
Show all specifications
Features
- Fan headers
- 4
- RAID
- Yes
- ARGB headers
- Yes
Warranty
- Warranty
- 3 years
- Manufacturer part number
- 90MB14I0-M0EAY0
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
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 B550M-A offers a balanced view across an all-round mix of priorities. It ranks #514 by capability in the current modelled field. Its clearest measured strength is feature score 58. MSI B550M PRO-VDH WIFI currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B550M-A offers C-grade capability for Gaming Build. It ranks #612 by capability in the current modelled field. Its clearest measured strength is feature score 58. The C grade is the decisive limitation for this workload.
ASUS PRIME B550M-A offers D-grade capability for Workstation. It ranks #665 by capability in the current modelled field. Its clearest measured strength is feature score 58. The D grade is the decisive limitation for this workload.
ASUS PRIME B550M-A offers C-grade capability for Small-Case Fit. It ranks #180 by capability in the current modelled field. Its clearest measured strength is feature score 58. 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 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 mobo-value-v1.4 · 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.