ASUS PRIME B860M-K
The current ASUS PRIME B860M-K price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · LGA1851
Retailer photo of ASUS PRIME B860M-K (Micro ATX). View this offer in Where to buy
Trade-offs: you want strong value with Balanced priorities specifically
- Socket
- LGA 1851
- Chipset
- Intel B860
- Form factor
- Micro ATX
- Memory
- DDR5 · 2 slots
- M.2 slots
- 4
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: MediumAt $164 the ASUS PRIME B860M-K is priced 7% below its $177 representative market level. Only 2 verified new offers stand behind it, so the level can move quickly.
Consider: Gigabyte B650M GAMING PLUS WF offers stronger value around $100.Compare
Prices & availability
ASUS PRIME B860M-K: current price and offers
Compare the offers we track for this model, across variants and retailers.
2 tracked offers · 2 retailers
| Variant | Store | Condition | Price (snapshot) | Value · Balanced | Checked | Offer link |
|---|---|---|---|---|---|---|
| ASUS PRIME B860M-K (Micro ATX) | Newegg | New | $164 | 41 | 2026-11-08 | View offer → |
| ASUS PRIME B860M-K (Micro ATX) | MemoryC | New | $190 | 35 | 2026-11-09 | View offer → |
| ASUS PRIME B860M-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.
#664 of 967 graded motherboards
- #661 ASUSASUS PRIME B860M-A 49
- #662 ASUSASUS PRIME B860M-A WIFI 49
- #663 ASUSASUS PRIME B860M-A WIFI-CSM 49
- #664 ASUSASUS PRIME B860M-K 49
- #665 ASUSASUS Pro B860M-CT-CSM 49
- #666 ASUSASUS ROG STRIX B860-A GAMING WIFI 49
- #667 ASUSASUS ROG STRIX B860-F GAMING WIFI 49
Value Balanced
How much of that you get for today’s price.
#326 of 1015 currently priced motherboards
- #323 GigabyteGigabyte B860M K 41
- #324 MSIMSI MAG X870E GAMING PLUS MAX WIFI 41
- #325 GigabyteGigabyte B850M D3HP 41
- #326 ASUSASUS PRIME B860M-K 41
- #327 ASUSASUS ROG STRIX B850-F GAMING WIFI 40
- #328 ASUSASUS 90MB1BY0-M0EAY0 40
- #329 GigabyteGigabyte B450 Gaming X 40
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#455 of 949 graded motherboards
- #452 ASRockASRock B860M-X 78
- #453 ASUSASUS B860M-E 78
- #454 ASUSASUS PRIME B860-PLUS-CSM 78
- #455 ASUSASUS PRIME B860M-K 78
- #456 ASUSASUS ROG STRIX B860-A GAMING WIFI 78
- #457 ASUSASUS ROG STRIX B860-F GAMING WIFI 78
- #458 ASUSASUS ROG STRIX B860-G GAMING WIFI 78
Value Gaming Build
How much of that you get for today’s price.
#321 of 1015 currently priced motherboards
- #318 MSIMSI B360M MORTAR 40
- #319 ASUSASUS ROG STRIX B850-F GAMING WIFI 40
- #320 MSIMSI PRO Z690-A WIFI DDR4 40
- #321 ASUSASUS PRIME B860M-K 40
- #322 GigabyteGigabyte B650I AORUS ULTRA 40
- #323 ASUSASUS PRIME B250M-PLUS 39
- #324 ASUSASUS TUF GAMING B650M-PLUS WIFI 39
Performance Workstation
How much it can do. Price plays no part in this ranking.
#761 of 949 graded motherboards
- #758 GigabyteGigabyte B560M DS3H 35
- #759 ASUSASUS B860M AYW GAMING WIFI 35
- #760 ASUSASUS B860M-BRO 35
- #761 ASUSASUS PRIME B860M-K 35
- #762 GigabyteGigabyte B860M D 35
- #763 GigabyteGigabyte B860M H 35
- #764 ASRockASRock H170 Pro4S 35
Value Workstation
How much of that you get for today’s price.
#428 of 1015 currently priced motherboards
- #425 ASRockASRock B650M-HDV 51
- #426 GigabyteGigabyte X870M AORUS ELITE WIFI7 ICE 51
- #427 MSIMSI PRO B840M-P WIFI6E 51
- #428 ASUSASUS PRIME B860M-K 51
- #429 ASUSASUS PRIME B850M-K 51
- #430 GigabyteGigabyte B550 AORUS ELITE 51
- #431 GigabyteGigabyte X570 AORUS ELITE 51
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#138 of 967 graded motherboards
- #135 ASRockASRock B860M Steel Legend WiFi 73
- #136 ASRockASRock B860M-X 73
- #137 ASUSASUS B860M-E 73
- #138 ASUSASUS PRIME B860M-K 73
- #139 ASUSASUS ROG STRIX B860-G GAMING WIFI 73
- #140 ASUSASUS TUF GAMING B860M-PLUS 73
- #141 ASUSASUS TUF GAMING B860M-PLUS WIFI 73
Value Small-Case Fit
How much of that you get for today’s price.
#292 of 1015 currently priced motherboards
- #289 ASRockASRock B760M-HDV 46
- #290 ASUSASUS PRIME B760M-R D4 46
- #291 GigabyteGigabyte B660M DS3H DDR4 46
- #292 ASUSASUS PRIME B860M-K 46
- #293 GigabyteGigabyte B550M AORUS PRO 46
- #294 ASUSASUS PRIME B560M-A 46
- #295 GigabyteGigabyte B760 DS3H 46
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 Value41 | Higher capability MSI MAG X870E GAMING MAX WIFI 10 +104% capability · +15% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF 100 +58% capability · -39% price |
| Gaming BuildScenario capability | GradeB Value40 | Higher capability ASUS B650E MAX GAMING WIFI S 60 +19% capability · +10% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF B 100 +8% capability · -39% price |
| WorkstationScenario capability | GradeD Value51 | Higher capability MSI X870E GAMING PLUS WIFI A 86 +168% capability · +16% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF C 100 +82% capability · -39% price |
| Small-Case FitScenario capability | GradeC Value46 | Higher capability ASRock A620AI WiFi S 86 +30% capability · -27% price | Higher Value with current priorities MSI B550M PRO-VDH WIFI C 100 -4% 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 B 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 $83, against a cheapest tracked $164
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 41 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 B 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 $81, against a cheapest tracked $164
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 40 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 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
- 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 $66, against a cheapest tracked $164
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 51 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 B for Gaming Build
Consider other options if
- Not the pick if Small-Case Fit is your main useit grades C there; ASRock A620AI WiFi grades S at $120
- 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 $94, against a cheapest tracked $164
- Value for money matters more to you than this exact modelMSI B550M PRO-VDH WIFI holds Relative Value 100 against its 46 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 B860M-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
- Socket
- LGA 1851
- Chipset
- Intel B860
- Form factor
- Micro ATX
Physical / Outputs
- M.2 slots
- 4
- SATA ports
- 4
- PCIe ×16 slots
- 1
- USB ports
- 4
- Ethernet
- 2.5 Gb/s
Show all specifications
Features
- RAID
- Yes
Warranty
- Warranty
- 3 years
- Manufacturer part number
- PRIME B860M-K
Hover any value to see where it came from: a manufacturer specification, or a figure The Comparator calculated.
Sources: Comparator offer frame 2026-11-02–2026-11-09
What to check in your build
LGA 1851
Takes LGA 1851 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 B860M-K offers a balanced view across an all-round mix of priorities. It ranks #664 by capability in the current modelled field. Its clearest measured strength is feature score 61. Gigabyte B650M GAMING PLUS WF currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B860M-K offers B-grade capability for Gaming Build. It ranks #455 by capability in the current modelled field. Its clearest measured strength is feature score 61. Gigabyte B650M GAMING PLUS WF currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B860M-K offers D-grade capability for Workstation. It ranks #761 by capability in the current modelled field. Its clearest measured strength is feature score 61. The D grade is the decisive limitation for this workload.
ASUS PRIME B860M-K offers C-grade capability for Small-Case Fit. It ranks #138 by capability in the current modelled field. Its clearest measured strength is feature score 61. 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 2026-11-02–2026-11-09 · formula mobo-value-v6.1 · facts facts-2026-11-09 · 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.