ASUS PRIME B450M-K II
The current ASUS PRIME B450M-K II price from retailers, its key specifications, and how it performs for each job.
ASUS · MOBO · AM4
Retailer photo of ASUS PRIME B450M-K II (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 $105 the ASUS PRIME B450M-K II is priced in line with its $105 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 B450M-K II: 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 B450M-K II (Micro ATX) | Newegg | New | $105 | 46 | 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.
#519 of 1030 graded motherboards
- #516 ASUSASUS B450-PLUS GAMING 62
- #517 ASUSASUS B450M-PRO GAMING 62
- #518 ASUSASUS PRIME B450M-A CSM 62
- #519 ASUSASUS PRIME B450M-K II 62
- #520 ASUSASUS STRIX B450-F GAMING 62
- #521 ASUSASUS TUF GAMING B450M-PRO II 62
- #522 ASUSASUS TUF GAMING B450M-PRO S 62
Value Balanced
How much of that you get for today’s price.
#222 of 1072 currently priced motherboards
- #219 ASRockASRock B860M-X 47
- #220 GigabyteGigabyte B860M D3HP 46
- #221 GigabyteGigabyte GA-B250M-DS3H 46
- #222 ASUSASUS PRIME B450M-K II 46
- #223 ASUSASUS Strix Z370-E Gaming 46
- #224 GigabyteGigabyte B560 HD3 46
- #225 GigabyteGigabyte B460M AORUS PRO 46
Performance Gaming Build
How much it can do. Price plays no part in this ranking.
#495 of 926 graded motherboards
- #492 ASRockASRock B450M Steel Legend 75
- #493 ASUSASUS B450-PLUS GAMING 75
- #494 ASUSASUS B450M-PRO GAMING 75
- #495 ASUSASUS PRIME B450M-K II 75
- #496 ASUSASUS STRIX B450-F GAMING 75
- #497 ASUSASUS TUF GAMING B450M-PRO II 75
- #498 GigabyteGigabyte B450 Gaming X 75
Value Gaming Build
How much of that you get for today’s price.
#150 of 1072 currently priced motherboards
- #147 MSIMSI MAG B850 GAMING PLUS MAX WIFI 50
- #148 MSIMSI PRO X670-P WIFI 50
- #149 MSIMSI PRO X870-P WIFI 50
- #150 ASUSASUS PRIME B450M-K II 50
- #151 GigabyteGigabyte B650 EAGLE 50
- #152 GigabyteGigabyte B860 AORUS ELITE WIFI7 ICE 50
- #153 ASUSASUS PRIME Z790M-PLUS 50
Performance Workstation
How much it can do. Price plays no part in this ranking.
#890 of 988 graded motherboards
- #887 ASRockASRock AB350M-HDV 17
- #888 ASRockASRock B450M-HDV 17
- #889 ASUSASUS 90MB0Z50-M0EAY0 17
- #890 ASUSASUS PRIME B450M-K II 17
- #891 MSIMSI B450M-A PRO MAX 17
- #892 ASRockASRock B550M-HDV 17
- #893 ASRockASRock B550M-HVS SE90-MXBMK0-A0UAYZ 17
Value Workstation
How much of that you get for today’s price.
#622 of 1072 currently priced motherboards
- #619 GigabyteGigabyte B760M AORUS ELITE AX 44
- #620 GigabyteGigabyte Z390 AORUS PRO 44
- #621 GigabyteGigabyte B760 GAMING X WIFI6E GEN5 44
- #622 ASUSASUS PRIME B450M-K II 44
- #623 MSIMSI MAG B850M MORTAR 44
- #624 GigabyteGigabyte B450M S2H 44
- #625 MSIMSI MAG B550 TOMAHAWK 44
Performance Small-Case Fit
How much it can do. Price plays no part in this ranking.
#224 of 1030 graded motherboards
- #221 ASUSASUS PRIME Z790M-PLUS 70
- #222 ASRockASRock B450M Steel Legend 69
- #223 ASUSASUS B450M-PRO GAMING 69
- #224 ASUSASUS PRIME B450M-K II 69
- #225 ASUSASUS TUF GAMING B450M-PRO II 69
- #226 GigabyteGigabyte B450M DS3H 69
- #227 GigabyteGigabyte B450M DS3H V2 69
Value Small-Case Fit
How much of that you get for today’s price.
#100 of 1072 currently priced motherboards
- #97 MSIMSI Z890 GAMING PLUS WIFI 58
- #98 MSIMSI PRO B760M-P DDR4 58
- #99 GigabyteGigabyte B460M DS3H AC 58
- #100 ASUSASUS PRIME B450M-K II 58
- #101 ASUSASUS TUF Z370 Plus Gaming 58
- #102 ASUSASUS PRIME B550-PLUS AC-HES 58
- #103 MSIMSI MAG B560M MORTAR 58
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 Value46 | Higher capability ASRock B650 PG LIGHTNING 88 +25% capability · -5% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF 100 +25% capability · -5% price |
| Gaming BuildScenario capability | GradeB
Value50 | Higher capability ASRock B650M-HDV A 81 +20% capability | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF B 100 +12% capability · -5% price |
| WorkstationScenario capability | GradeD
Value44
| Higher capability ASRock B650 PG Lightning WiFi B 80 +381% capability · +14% price | Higher Value with current priorities Gigabyte B650M GAMING PLUS WF C 100 +288% capability · -5% price |
| Small-Case FitScenario capability | GradeC
Value58
| Higher capability ASRock A620AI WiFi S 86 +37% capability · +14% price | Higher Value with current priorities MSI B550M PRO-VDH WIFI C 100 +1% 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 $61, against a cheapest tracked $105
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 46 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 $65, against a cheapest tracked $105
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 50 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; ASRock B650 PG Lightning WiFi grades B at $120
- 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 $31, against a cheapest tracked $105
- Value for money matters more to you than this exact modelGigabyte B650M GAMING PLUS WF holds Relative Value 100 against its 44 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
- Strong-value threshold: ~$76$76 is where Relative Value reaches 80 for Small-Case Fit, in the 2026-11-08–2026-11-14 offer frame
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
- Current price sits $29 above the strong-value threshold (~$76)cheapest tracked $105 against a $76 calculated threshold for Small-Case Fit
- Value for money matters more to you than this exact modelMSI B550M PRO-VDH WIFI holds Relative Value 100 against its 58 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 B450M-K II
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 B450M-K II
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
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 · 2 slots · up to 64 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 B450M-K II offers a balanced view across an all-round mix of priorities. It ranks #519 by capability in the current modelled field. Its clearest measured strength is feature score 33. MSI B550M PRO-VDH WIFI currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B450M-K II offers B-grade capability for Gaming Build. It ranks #495 by capability in the current modelled field. Its clearest measured strength is feature score 33. ASRock B550M-HVS SE90-MXBMK0-A0UAYZ currently clears the same practical bar with stronger Relative Value.
ASUS PRIME B450M-K II offers D-grade capability for Workstation. It ranks #890 by capability in the current modelled field. Its clearest measured strength is feature score 33. The D grade is the decisive limitation for this workload.
ASUS PRIME B450M-K II offers C-grade capability for Small-Case Fit. It ranks #224 by capability in the current modelled field. Its clearest measured strength is feature score 33. 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.