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 $170 the ASUS PRIME B850M-K is priced in line with its $170 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 | $170 | 43 | 2026-11-14 | View offer → |
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.
#221 of 1030 graded motherboards
- #218 ASUSASUS PRIME B850M-A 78
- #219 ASUSASUS PRIME B850M-A WIFI 78
- #220 ASUSASUS PRIME B850M-A WIFI-CSM 78
- #221 ASUSASUS PRIME B850M-K 78
- #222 ASUSASUS Pro WS B850M-ACE SE 78
- #223 ASUSASUS ROG STRIX B850-A GAMING WIFI 78
- #224 ASUSASUS ROG STRIX B850-E GAMING WIFI 78
Value Balanced
How much of that you get for today’s price.
#274 of 1072 currently priced motherboards
- #271 GigabyteGigabyte B840M D2H 43
- #272 ASUSASUS TUF B360-PLUS GAMING 43
- #273 GigabyteGigabyte B360M D3H 43
- #274 ASUSASUS PRIME B850M-K 43
- #275 ASUSASUS TUF GAMING B650M-E 43
- #276 GigabyteGigabyte B550M DS3H R2 43
- #277 MSIMSI MPG B550 GAMING PLUS 43
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#146 of 926 graded motherboards
- #143 ASUSASUS ROG STRIX B650E-I GAMING WIFI 90
- #144 ASUSASUS TUF GAMING B650E-PLUS WIFI 90
- #145 GigabyteGigabyte B650E AORUS ELITE X AX ICE 90
- #146 ASUSASUS PRIME B850M-K 90
- #147 ASUSASUS ROG STRIX B850-E GAMING WIFI 90
- #148 ASUSASUS ROG STRIX B850-F GAMING WIFI 90
- #149 ASUSASUS ROG STRIX B850-G GAMING WIFI 90
Value Gaming Build
How much of that you get for today’s price.
#235 of 1072 currently priced motherboards
- #232 ASUSASUS PRIME H810M-A WIFI-CSM 45
- #233 ASUSASUS TUF GAMING Z890-PLUS WIFI 45
- #234 MSIMSI MAG B850M MORTAR WIFI 45
- #235 ASUSASUS PRIME B850M-K 45
- #236 ASUSASUS PRIME A620-PLUS WIFI6 44
- #237 ASUSASUS PRIME B460-PLUS 44
- #238 ASUSASUS TUF GAMING B650M-E 44
Performance Workstation
How much it can do. Price plays no part in this ranking.
#618 of 988 graded motherboards
- #615 GigabyteGigabyte Z390 UD 55
- #616 MSIMSI B450 GAMING PRO CARBON AC 54
- #617 ASRockAsRock B850M Rock WiFi 54
- #618 ASUSASUS PRIME B850M-K 54
- #619 GigabyteGigabyte B850M FORCE 54
- #620 GigabyteGigabyte B850M FORCE WF6E 54
- #621 MSIMSI B850M GAMING WIFI 54
Value Workstation
How much of that you get for today’s price.
#385 of 1072 currently priced motherboards
- #382 MSIMSI MPG B550 GAMING CARBON WIFI 53
- #383 ASUSASUS Pro B650M-CT-CSM 53
- #384 GigabyteGigabyte X870M AORUS ELITE WIFI7 ICE 53
- #385 ASUSASUS PRIME B850M-K 53
- #386 GigabyteGigabyte Z590 AORUS ELITE AX 53
- #387 GigabyteGigabyte B560 HD3 53
- #388 MSIMSI Z270-A PRO 52
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#90 of 1030 graded motherboards
- #87 MSIMSI PRO B650M-B 75
- #88 ASRockAsRock B850M Rock WiFi 75
- #89 ASUSASUS B850M-AYW-GAMING-WIFI 75
- #90 ASUSASUS PRIME B850M-K 75
- #91 ASUSASUS ROG STRIX B850-G GAMING WIFI 75
- #92 ASUSASUS TUF GAMING B850M-E WIFI 75
- #93 BiostarBiostar B850MT2-E DJ 75
Value Small-Case Fit
How much of that you get for today’s price.
#275 of 1072 currently priced motherboards
- #272 ASUSASUS TUF GAMING B650EM-PLUS WIFI 47
- #273 ASRockASRock A320M-HDV R4.0 47
- #274 GigabyteGigabyte Z890 EAGLE WIFI7 47
- #275 ASUSASUS PRIME B850M-K 47
- #276 GigabyteGigabyte B850 AORUS ELITE WIFI7 47
- #277 ASUSASUS H81M-K 47
- #278 ASRockASRock B760M-HDV 47
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 Value43 | Higher capability MSI MAG X870E GAMING MAX WIFI 10 +29% capability · +11% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF 100 +0% capability · -41% price |
| Gaming BuildScenario capability | GradeA
Value45 | — | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF B 100 -7% capability · -41% price |
| WorkstationScenario capability | GradeD
Value53
| Higher capability MSI X870E GAMING PLUS WIFI A 86 +75% capability · +11% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF C 100 +19% capability · -41% price |
| Small-Case FitScenario capability | GradeC
Value47
| Higher capability Gigabyte Z690I AORUS ULTRA LITE S 50 +32% capability · +17% price | Higher Value with current priorities MSI B550M PRO-VDH WIFI C 100 -7% capability |
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 $91, against a cheapest tracked $170
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 43 with Balanced priorities, at $100
- 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 specificallyat today's market no realistic price for this model reaches strong value for Gaming Build — the calculation only gets there near $95, against a cheapest tracked $170
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 45 for Gaming Build, at $100
- 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 A 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
- You want strong value for Workstation specificallyat today's market no realistic price for this model reaches strong value for Workstation — the calculation only gets there near $74, against a cheapest tracked $170
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 53 for Workstation, at $100
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; Gigabyte Z690I AORUS ULTRA LITE grades S at $199
- You want strong value for Small-Case Fit specificallyat today's market no realistic price for this model reaches strong value for Small-Case Fit — the calculation only gets there near $99, against a cheapest tracked $170
- Value for money matters more to you than this exact modelMSI B550M PRO-VDH WIFI holds Relative Value 100 against its 47 for Small-Case Fit. Check on Amazon.
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 TheComparator.Tech calculated.
Sources: Comparator offer frame 2026-11-08–2026-11-14
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 #221 by capability in the current modelled field. Its clearest measured strength is feature score 51. Gigabyte B650M GAMING PLUS WF currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers A-grade capability for Gaming Build. It ranks #146 by capability in the current modelled field. Its clearest measured strength is feature score 51. ASUS b650em-max-gaming-wifi currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B850M-K offers D-grade capability for Workstation. It ranks #618 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 #90 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.
Useful links & sources
offer frame 2026-11-08–2026-11-14 · formula mobo-value-v6.1 · facts facts-2026-11-14 · 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.