ASUS PRIME B550M-K
The current ASUS PRIME B550M-K price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · AM4
Retailer photo of ASUS PRIME B550M-K (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 CAD 374 the ASUS PRIME B550M-K is priced in line with its CAD 374 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-K: 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 B550M-K (Micro ATX) | Newegg | New | CAD 374 | 20 | 2026-10-29 | View offer → |
| ASUS PRIME B550M-KMultiple 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.
#414 of 703 graded motherboards
- #411 ASUSASUS PRIME B550M-A 62
- #412 ASUSASUS PRIME B550M-A AC 62
- #413 ASUSASUS PRIME B550M-A WIFI II 62
- #414 ASUSASUS PRIME B550M-K 62
- #415 ASUSASUS PRIME B550M-K ARGB 62
- #416 ASUSASUS Pro B550M-C 62
- #417 ASUSASUS ROG STRIX B550-E GAMING 62
Value Balanced
How much of that you get for today’s price.
#553 of 727 currently priced motherboards
- #550 GigabyteGigabyte B650I AX 21
- #551 ASUSASUS PRIME B760M-F 21
- #552 GigabyteGigabyte B760M D3HP WIFI6 21
- #553 ASUSASUS PRIME B550M-K 20
- #554 MSIMSI PRO X870E-S EVO WIFI 20
- #555 GigabyteGigabyte X570 UD 20
- #556 ASUSASUS EX-B760M-V7 20
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#393 of 685 graded motherboards
- #390 ASUSASUS TUF GAMING B450M-PRO II 75
- #391 MSIMSI B450M PRO-VDH MAX 75
- #392 ASRockASRock B550M-ITX 75
- #393 ASUSASUS PRIME B550M-K 75
- #394 ASUSASUS PRIME B550M-K ARGB 75
- #395 GigabyteGigabyte B550 GAMING X 75
- #396 ASUSASUS Strix Z370-E Gaming 75
Value Gaming Build
How much of that you get for today’s price.
#521 of 727 currently priced motherboards
- #518 ASUSASUS TUF GAMING B760M-PLUS II 17
- #519 ASUSASUS TUF B450M-PRO GAMING 17
- #520 ASUSASUS MAXIMUS IX FORMULA 17
- #521 ASUSASUS PRIME B550M-K 17
- #522 ASUSASUS TUF GAMING A620M-PLUS 17
- #523 ASUSASUS TUF GAMING B660M-PLUS WIFI D4 17
- #524 ASUSASUS B450-PLUS GAMING 17
Performance Workstation
How much it can do. Price plays no part in this ranking.
#492 of 680 graded motherboards
- #489 ASRockASRock B450 STEEL LEGEND 45
- #490 MSIMSI MAG B550M BAZOOKA 45
- #491 ASRockASRock B550 Phantom Gaming 4 44
- #492 ASUSASUS PRIME B550M-K 44
- #493 ASUSASUS PRIME B550M-K ARGB 44
- #494 ASUSASUS TUF X470-Plus Gaming 44
- #495 ASUSASUS Pro B760M-C-CSM 44
Value Workstation
How much of that you get for today’s price.
#550 of 727 currently priced motherboards
- #547 ASUSASUS B760M-AYW WIFI D4 II 7
- #548 MSIMSI B450 TOMAHAWK MAX II 7
- #549 ASUSASUS PRIME B560M-A 7
- #550 ASUSASUS PRIME B550M-K 7
- #551 MSIMSI Z270-A PRO 6
- #552 ASUSASUS ROG STRIX B560-G GAMING WIFI 6
- #553 MSIMSI B450M PRO-VDH MAX 6
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#166 of 703 graded motherboards
- #163 MSIMSI B450M PRO-VDH MAX 70
- #164 MSIMSI B450M-A PRO MAX 70
- #165 ASRockASRock B550M-HDV 70
- #166 ASUSASUS PRIME B550M-K 70
- #167 ASUSASUS PRIME B550M-K ARGB 70
- #168 ASUSASUS Pro B550M-C 70
- #169 ASUSASUS TUF GAMING B550M-E WIFI 70
Value Small-Case Fit
How much of that you get for today’s price.
#362 of 727 currently priced motherboards
- #359 ASUSASUS ROG STRIX B560-I GAMING WIFI 24
- #360 ASUSASUS TUF B450M-PRO GAMING 24
- #361 ASUSASUS X570-CREATOR WIFI 24
- #362 ASUSASUS PRIME B550M-K 24
- #363 MSIMSI B760 GAMING PLUS WIFI 24
- #364 MSIMSI PRO B850M-A WIFI 24
- #365 MSIMSI MAG B650 TOMAHAWK WIFI 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 Value20 | Higher capability MSI PRO X870E-S EVO WIFI 20 +61% capability · -17% price | Higher Value with current priorities ASRock B650 Pro RS WiFi 100 +25% capability · -49% price |
| Gaming BuildScenario capability | GradeB Value17 | Higher capability MSI PRO B650-P WIFI S 81 +33% capability · -13% price | Higher Value with current priorities Gigabyte X870 AORUS ELITE WIFI7 ICE B 100 +12% capability · -11% price |
| WorkstationScenario capability | GradeD Value7 | Higher capability Higher capability · Higher Value with current priorities Gigabyte X870 AORUS ELITE WIFI7 ICE A 88 +117% capability · -11% price | |
| Small-Case FitScenario capability | GradeC Value24 | Higher capability ASUS ROG STRIX Z690-I GAMING WIFI S 98 +43% capability · -25% price | Higher Value with current priorities ASUS PRIME Z890M-PLUS WIFI C 100 -3% capability · -36% 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 modelASRock B650 Pro RS WiFi holds Relative Value 100 against its 20 with Balanced priorities, at CAD 190
- 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 AORUS ELITE WIFI7 ICE holds Relative Value 100 against its 17 for Gaming Build, at CAD 333
- 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; Gigabyte X870 AORUS ELITE WIFI7 ICE grades A at CAD 333
- Value for money matters more to you than this exact modelGigabyte X870 AORUS ELITE WIFI7 ICE holds Relative Value 88 against its 7 for Workstation, at CAD 333
- 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 Z690-I GAMING WIFI grades S at CAD 280
- 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 PRIME Z890M-PLUS WIFI holds Relative Value 100 against its 24 for Small-Case Fit, at CAD 240
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-K
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
- 4
- 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 B550M-K
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 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 B550M-K offers a balanced view across an all-round mix of priorities. It ranks #414 by capability in the current modelled field. Its clearest measured strength is feature score 41. ASRock B650 Pro RS WiFi currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B550M-K offers B-grade capability for Gaming Build. It ranks #393 by capability in the current modelled field. Its clearest measured strength is feature score 41. ASRock B650 Pro RS WiFi currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B550M-K offers D-grade capability for Workstation. It ranks #492 by capability in the current modelled field. Its clearest measured strength is feature score 41. The D grade is the decisive limitation for this workload.
ASUS PRIME B550M-K offers C-grade capability for Small-Case Fit. It ranks #166 by capability in the current modelled field. Its clearest measured strength is feature score 41. 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 2026-10-29 · 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.