ASRock B550M-ITX
ASRock
Current comparison price
$130Value · Balanced19
from 3 offers at 3 retailers · checked Oct 29
Capability highlights · price excluded
- A Small-Case Fit
+2 more · view all grades
- B Gaming Build
- D Workstation
- A Small-Case Fit
ASRock B550M-ITX vs ASUS Prime B450M-A II
Compare ASRock B550M-ITX and ASUS Prime B450M-A II in the United States side by side across price, specifications, capability by use case and the price at which the answer changes.
Market snapshot Oct 29, 2026 · USD
Specifications, performance and current prices compared in United States · USD · prices checked through Oct 29, 2026
ASUS Prime B450M-A II
ASUS
Current comparison price
$204Value · Balanced22
from 1 offer · checked Oct 29
Capability highlights · price excluded
- B Gaming Build
- C Small-Case Fit
- D Workstation
Key differences at a glance
Capabilityprice excluded
Scenarios won: ASRock B550M-ITX 1, ASUS Prime B450M-A II 0, even 2. ASRock B550M-ITX is ahead for Small-Case Fit. View grades →
Valueunder Balanced
ASUS Prime B450M-A II has the higher Value under these priorities (22 vs 19).
Pricecurrent market snapshot
ASRock B550M-ITX costs less right now ($130 vs $204, 36% apart).
How priorities change the comparison Presets with the higher Value: ASRock B550M-ITX 1 · ASUS Prime B450M-A II 3 · even 0
| Priority | ASRock B550M-ITX | ASUS Prime B450M-A II | |
|---|---|---|---|
| 19 | 22 | ||
| 13 | 18 | ||
| 3 | 7 | ||
| 28 | 24 |
Pick a preset to compare under it: the whole page follows. Within 2 points counts as even.
Price difference and break-even price
Under Balanced, each product holds or loses the higher Value at one price, with the other held at its current price. Enter the prices you were actually offered to see the answer for your deal.
ASRock B550M-ITX
Current comparison price
$130 19
ASRock B550M-ITX matches the Value of ASUS Prime B450M-A II (at $204) at $111 or less.
ASUS Prime B450M-A II
Current comparison price
$204 22
ASUS Prime B450M-A II keeps the higher Value up to $240 (with ASRock B550M-ITX at $130).
A crossover is a calculation under the active priorities and today's market frame, not a price forecast.
Price comparison: current offers
New offers we track in United States (USD), cheapest first, with the date each was checked. Amazon appears as a link only: its price is not shown and never enters Value.
ASRock B550M-ITX
- Check on AmazonAmazonAffiliate link · price shown on AmazonCheck price →
- $130Best priceASRock B550M-ITX (Mini)CentralComputer · checked Go to offer →
- $160ASRock B550M-ITX (Mini)Newegg · checked · Affiliate linkGo to offer →
- $173ASRock B550M-ITX (Mini)MemoryC · checked · Affiliate linkGo to offer →
ASUS Prime B450M-A II
- Check on AmazonAmazonAffiliate link · price shown on AmazonCheck price →
- $204ASUS Prime B450M-A II (Micro ATX)Newegg · checked · Affiliate linkGo to offer →
Affiliate links may earn us a commission. They never change the prices shown here, the ranking or Value.
Performance and key differences
What each product can do for a job, graded S to F with price left out, and the measured indexes behind it.
View full tier list and performance rankings
| ASRock B550M-ITX | ASUS Prime B450M-A II | |
|---|---|---|
| Gaming Build | B #509 | B #404 |
| Workstation | D #860 | D #561 |
| Small-Case Fit | A #23 | C #204 |
| Features | 41 | 45 |
| Connectivity | 9 | 12 |
| Memory support | 28 | 56 |
Where each one leads
- Lower current price · More offers
- Higher Value with these priorities
Specifications compared
Facts true of every board a product groups; a range or "varies" marks a fact that differs between boards.
6 identical facts hidden
| ASRock B550M-ITX | ASUS Prime B450M-A II | |
|---|---|---|
| Platform | ||
| Chipset | AMD B550 | AMD B450 |
| Form factor | Mini-ITX | Micro ATX |
| Memory | ||
| Memory slots | 2 | 4 |
| Product | ||
| Brand | ASRock | ASUS |
Not tracked means the source data does not have this fact. It is not assumed to be absent.
Which one to choose: where each wins
Conditions drawn from the data above, not a universal recommendation. The better choice depends on which of these matter to you.
ASRock B550M-ITX fits better when…
- the job is Small-Case Fit: higher capability grade
- the budget decides: 36% lower current price
ASUS Prime B450M-A II fits better when…
- Features matters: higher index
- Connectivity matters: higher index
- Memory support matters: higher index
- your priorities are Balanced: higher Value
Nearby market alternative
Worth considering instead
ASRock B650 PG LIGHTNING — same A-tier capability for Gaming Build, about $30 cheaper · Value 57.
Neither of the two above is the only answer — this one clears the same bar for less. ⇄ Compare all three
Questions and methodology
Which one is better, ASRock B550M-ITX or ASUS Prime B450M-A II?
It depends on the question. For capability (price left out) see the grades by use case; for how good the current price is for what you get, see Value under your priorities; and for the cheapest option today, see current prices. This page keeps the three apart and does not name one overall winner.
Which has the higher Value right now?
Under Balanced, ASUS Prime B450M-A II has the higher Value (22 vs 19) in the market snapshot of Oct 29, 2026. Value changes with your priorities and with prices.
At what price does the answer change?
Under Balanced, with ASUS Prime B450M-A II at its current price, ASRock B550M-ITX reaches equal Value at $111. It is a calculation, not a price forecast.
Which one is more capable, ignoring price?
Scenarios won: ASRock B550M-ITX 1, ASUS Prime B450M-A II 0, even 2. ASRock B550M-ITX is ahead for Small-Case Fit.
Where can I compare current offers?
The offers section lists every new offer we track for both products in United States, with the date each price was checked. Open in Compare to add more products.