ASUS PRIME B850M-K
The current ASUS PRIME B850M-K price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · AM5
Retailer photo of ASUS PRIME B850M-K (Micro ATX). View this offer in Where to buy
Works well for: Gaming Build
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 320 the ASUS PRIME B850M-K is priced in line with its CAD 320 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 B850M-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 B850M-K (Micro ATX) | Newegg | New | CAD 320 | 34 | 2026-10-29 | View offer → |
| ASUS PRIME B850M-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.
#186 of 703 graded motherboards
- #183 ASUSASUS PRIME B850M-A 78
- #184 ASUSASUS PRIME B850M-A WIFI 78
- #185 ASUSASUS PRIME B850M-A WIFI-CSM 78
- #186 ASUSASUS PRIME B850M-K 78
- #187 ASUSASUS Pro WS B850M-ACE SE 78
- #188 ASUSASUS ProArt-B850-CREATOR-WIFI-NEO 78
- #189 ASUSASUS ROG STRIX B850-A GAMING WIFI 78
Value Balanced
How much of that you get for today’s price.
#355 of 727 currently priced motherboards
- #352 ASRockASRock B550M-HDV 35
- #353 MSIMSI MPG Z590M GAMING EDGE WIFI 34
- #354 MSIMSI MPG X570S EDGE MAX WIFI 34
- #355 ASUSASUS PRIME B850M-K 34
- #356 ASUSASUS PRIME B860M-A 34
- #357 MSIMSI MPG Z790 EDGE MONSTER HUNTER EDITION 34
- #358 MSIMSI MPG Z490 GAMING EDGE WIFI 34
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#143 of 685 graded motherboards
- #140 ASUSASUS ROG STRIX B650E-I GAMING WIFI 90
- #141 ASUSASUS TUF GAMING B650E-PLUS WIFI 90
- #142 GigabyteGigabyte B650E AORUS ELITE X AX ICE 90
- #143 ASUSASUS PRIME B850M-K 90
- #144 ASUSASUS ROG STRIX B850-E GAMING WIFI 90
- #145 ASUSASUS ROG STRIX B850-F GAMING WIFI 90
- #146 ASUSASUS TUF GAMING B850-BTF WIFI W 90
Value Gaming Build
How much of that you get for today’s price.
#360 of 727 currently priced motherboards
- #357 GigabyteGigabyte B760 DS3H 31
- #358 ASUSASUS TUF X470-Plus Gaming 31
- #359 ASUSASUS TUF GAMING B550-PRO 31
- #360 ASUSASUS PRIME B850M-K 31
- #361 ASUSASUS ROG STRIX B850-E GAMING WIFI 31
- #362 GigabyteGigabyte X870 AORUS TACHYON ICE 30
- #363 ASUSASUS ROG STRIX B550-F GAMING 30
Performance Workstation
How much it can do. Price plays no part in this ranking.
#465 of 680 graded motherboards
- #462 GigabyteGigabyte B550 UD AC 52
- #463 MSIMSI MAG B550 TOMAHAWK 52
- #464 GigabyteGigabyte B860M D3HP 52
- #465 ASUSASUS PRIME B850M-K 50
- #466 MSIMSI B850M GAMING WIFI 50
- #467 MSIMSI PRO B850M-G 50
- #468 ASUSASUS PRIME B560M-A 50
Value Workstation
How much of that you get for today’s price.
#442 of 727 currently priced motherboards
- #439 MSIMSI Z270 GAMING M7 12
- #440 MSIMSI PRO B760M-P 12
- #441 ASUSASUS TUF GAMING B760M-PLUS WIFI 12
- #442 ASUSASUS PRIME B850M-K 12
- #443 ASUSASUS TUF GAMING A620-PRO WIFI 12
- #444 ASUSASUS Pro B760M-CT-CSM 12
- #445 ASRockASRock B860M-X 12
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#73 of 703 graded motherboards
- #70 MSIMSI PRO B650M-B 76
- #71 ASRockAsRock B850M Pro RS WiFi White 76
- #72 ASUSASUS B850M-AYW-GAMING-WIFI 76
- #73 ASUSASUS PRIME B850M-K 76
- #74 ASUSASUS TUF GAMING B850M-E WIFI 76
- #75 GigabyteGigabyte B850M DS3H 76
- #76 GigabyteGigabyte B850M GAMING X WIFI6E 76
Value Small-Case Fit
How much of that you get for today’s price.
#107 of 727 currently priced motherboards
- #104 ASUSASUS PRIME B660M-A AC D4 43
- #105 GigabyteGigabyte X870 GAMING WIFI6 43
- #106 MSIMSI PRO B840M-B 42
- #107 ASUSASUS PRIME B850M-K 42
- #108 ASUSASUS PRIME Z890-P WIFI 42
- #109 MSIMSI MPG B760I EDGE WIFI 42
- #110 ASUSASUS Pro B860M-CT-CSM 42
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 Value34 | Higher capability MSI PRO X870E-S EVO WIFI 20 +29% capability · -3% price | Higher Value with current priorities ASRock B650 Pro RS WiFi 100 +0% capability · -41% price |
| Gaming BuildScenario capability | GradeA Value31 | Higher capability MSI PRO B650-P WIFI S 81 +11% capability · +2% price | Higher Value with current priorities Gigabyte X870 AORUS ELITE WIFI7 ICE B 100 -7% capability · +4% price |
| WorkstationScenario capability | GradeD Value12 | Higher capability Higher capability · Higher Value with current priorities Gigabyte X870 AORUS ELITE WIFI7 ICE A 88 +90% capability · +4% price | |
| Small-Case FitScenario capability | GradeC Value42 | Higher capability Higher capability · Higher Value with current priorities ASUS ROG STRIX Z690-I GAMING WIFI S 98 +32% 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
Browse shortlists for different uses
Trade-offs
Works well if
- Gaming Build is your main prioritygraded A 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 CAD 95, against a cheapest tracked CAD 320
- Value for money matters more to you than this exact modelASRock B650 Pro RS WiFi holds Relative Value 100 against its 34 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 A 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
- Not the pick if Workstation is your main useit grades only D there
- You are buying for Gaming Build 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
- Workstation is not actually your main job — Gaming Build isit grades D for Workstation, but A 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
- You want strong value for Workstation specificallycompeting products deliver so much more for Workstation per dollar that no price this model realistically trades at reaches the strong-value mark for this job
- 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 A 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 ROG STRIX Z690-I GAMING WIFI holds Relative Value 98 against its 42 for Small-Case Fit, at CAD 280
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 B850M-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.
Show all specifications
Features
- RAID
- Yes
Warranty
- Warranty
- 3 years
- Manufacturer part number
- PRIME B850M-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
AM5
Takes AM5 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
DDR5 · 2 slots · up to 128 GB
Takes DDR5 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 B850M-K offers a balanced view across an all-round mix of priorities. It ranks #186 by capability in the current modelled field. Its clearest measured strength is feature score 51. ASRock B650 Pro RS WiFi currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers A-grade capability for Gaming Build. It ranks #143 by capability in the current modelled field. Its clearest measured strength is feature score 51. ASRock B650 Pro RS WiFi currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers D-grade capability for Workstation. It ranks #465 by capability in the current modelled field. Its clearest measured strength is feature score 51. The D grade is the decisive limitation for this workload.
ASUS PRIME B850M-K offers C-grade capability for Small-Case Fit. It ranks #73 by capability in the current modelled field. Its clearest measured strength is feature score 51. 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.