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ASRock B850 Rock WiFi7 AM5 ATX HDMI/USB-C (90-MXBU20-A0UAYZ)

ASRock B850 Rock WiFi7 AM5 ATX HDMI/USB-C
£180.33

RRP £337.99 · 47% under RRP

New, on Amazon.co.uk · as of

  • £152.74lowest we have recorded, 15 Oct 2026
  • £152.7430-day low
  • £152.7490-day low
  • £170.91typical price, last 90 days
  • 227 dayswe have checked this price for

Check price on Amazon

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Specification

Model90-MXBU20-A0UAYZ
BrandASRock
SocketAM5
ChipsetB850
Form factorATX
MemoryDDR5
WiFiYes
First available on AmazonFeb 2026 (8 mo old)
Amazon ASINB0GJX3BVYV
Amazon sales rank#50,069 (lower sells more)

Read from the Amazon listing title. Confirm the details and the CPU support list on the maker’s website before you buy.

Guides: AMD B850 chipset guide · AMD AM5 socket guide

Stated in the Amazon listing

RAM slots4
Fastest RAM speed stated8,000 MT/s
Newest PCIe generation statedPCIe 5.0
PCIe 5.0 graphics slotYes
PCIe 5.0 M.2 slotYes
WiFi generationWiFi 7
Wired LAN2.5GbE
Fastest USB-C port10 Gbps
SATA ports4
Power phases (as stated by the maker)9+2+1
Video outputsHDMI

Read automatically from the listing’s title and feature bullets. A feature that is missing here is simply not mentioned in the listing; the board may still have it.

From the Amazon listing

The seller’s own description, as shown on Amazon.co.uk. We have not checked these claims.

Price history

£150£200£250£300£164.59 from 14 Sep 2026£164.57 from 14 Sep 2026£164.70 from 15 Sep 2026£164.57 from 15 Sep 2026£155.00 from 15 Sep 2026£164.57 from 16 Sep 2026£164.59 from 17 Sep 2026£164.75 from 18 Sep 2026£165.93 from 19 Sep 2026£164.59 from 19 Sep 2026£169.69 from 19 Sep 2026£164.75 from 19 Sep 2026£169.69 from 20 Sep 2026£165.68 from 20 Sep 2026£165.43 from 21 Sep 2026£165.68 from 21 Sep 2026£175.89 from 22 Sep 2026£165.68 from 22 Sep 2026£165.91 from 23 Sep 2026£165.68 from 23 Sep 2026£170.39 from 24 Sep 2026£165.68 from 24 Sep 2026£170.65 from 25 Sep 2026£164.59 from 25 Sep 2026£164.50 from 26 Sep 2026£165.48 from 27 Sep 2026£164.59 from 27 Sep 2026£164.99 from 28 Sep 2026£170.15 from 28 Sep 2026£164.59 from 28 Sep 2026£164.99 from 28 Sep 2026£164.59 from 29 Sep 2026£164.57 from 29 Sep 2026£164.14 from 30 Sep 2026£164.26 from 30 Sep 2026£164.57 from 30 Sep 2026£171.51 from 1 Oct 2026£164.64 from 1 Oct 2026£157.00 from 1 Oct 2026£177.22 from 1 Oct 2026£165.91 from 2 Oct 2026£164.99 from 2 Oct 2026£164.57 from 2 Oct 2026£164.70 from 3 Oct 2026£164.57 from 3 Oct 2026£165.89 from 6 Oct 2026£165.20 from 6 Oct 2026£165.93 from 6 Oct 2026£170.91 from 7 Oct 2026£165.93 from 7 Oct 2026£177.22 from 8 Oct 2026£165.93 from 9 Oct 2026£177.22 from 9 Oct 2026£164.73 from 9 Oct 2026£164.48 from 10 Oct 2026£169.44 from 11 Oct 2026£165.91 from 12 Oct 2026£176.00 from 12 Oct 2026£169.44 from 12 Oct 2026£170.89 from 12 Oct 2026£165.91 from 13 Oct 2026£170.87 from 13 Oct 2026£165.91 from 13 Oct 2026£165.42 from 14 Oct 2026£159.96 from 14 Oct 2026£164.50 from 14 Oct 2026£152.74 from 15 Oct 2026£157.97 from 15 Oct 2026£165.91 from 15 Oct 2026£170.89 from 15 Oct 2026£170.91 from 16 Oct 2026£165.50 from 16 Oct 2026£165.07 from 16 Oct 2026£164.97 from 17 Oct 2026£165.57 from 17 Oct 2026£164.97 from 18 Oct 2026£164.77 from 18 Oct 2026£164.73 from 19 Oct 2026£165.93 from 19 Oct 2026£179.36 from 21 Oct 2026£182.03 from 22 Oct 2026£185.88 from 22 Oct 2026£182.02 from 22 Oct 2026£174.85 from 22 Oct 2026£176.65 from 23 Oct 2026£180.45 from 23 Oct 2026£197.03 from 23 Oct 2026£194.95 from 24 Oct 2026£194.45 from 25 Oct 2026£193.95 from 25 Oct 2026£193.45 from 25 Oct 2026£192.95 from 26 Oct 2026£192.45 from 26 Oct 2026£191.95 from 27 Oct 2026£191.45 from 27 Oct 2026£191.40 from 28 Oct 2026£194.45 from 28 Oct 2026£182.49 from 29 Oct 2026£182.47 from 29 Oct 2026£176.96 from 29 Oct 2026£176.62 from 29 Oct 2026£181.30 from 30 Oct 2026£179.57 from 30 Oct 2026£173.57 from 31 Oct 2026£173.03 from 31 Oct 2026£177.72 from 31 Oct 2026£177.22 from 31 Oct 2026£166.73 from 1 Nov 2026£179.74 from 1 Nov 2026£158.63 from 2 Nov 2026£179.74 from 2 Nov 2026£158.49 from 2 Nov 2026£179.74 from 3 Nov 2026£157.63 from 3 Nov 2026£179.74 from 3 Nov 2026£177.35 from 3 Nov 2026£153.74 from 4 Nov 2026£157.93 from 4 Nov 2026£177.35 from 4 Nov 2026£180.33 from 5 Nov 202622 Mar 2026Jul 20265 Nov 2026
  • £152.74lowest we have seen
  • £266.99highest
  • £170.91usual price, last 90 days
  • 22 Mar 2026tracked since
Price changes as a table
FromNew price
5 Nov 2026, 00:23£180.33
4 Nov 2026, 12:23£177.35
4 Nov 2026, 06:23£157.93
4 Nov 2026, 00:23£153.74
3 Nov 2026, 18:23£177.35
3 Nov 2026, 12:23£179.74
3 Nov 2026, 06:23£157.63
3 Nov 2026, 00:23£179.74
2 Nov 2026, 18:23£158.49
2 Nov 2026, 12:23£179.74
2 Nov 2026, 06:23£158.63
1 Nov 2026, 04:11£179.74
1 Nov 2026, 04:11£166.73
31 Oct 2026, 18:01£177.22
31 Oct 2026, 14:38£177.72
31 Oct 2026, 10:11£173.03
31 Oct 2026, 03:38£173.57
30 Oct 2026, 09:38£179.57
30 Oct 2026, 04:46£181.30
29 Oct 2026, 20:28£176.62
29 Oct 2026, 17:20£176.96
29 Oct 2026, 16:01£182.47
29 Oct 2026, 15:14£182.49
28 Oct 2026, 21:48£194.45
28 Oct 2026, 18:45£191.40
27 Oct 2026, 19:45£191.45
27 Oct 2026, 04:15£191.95
26 Oct 2026, 18:26£192.45
26 Oct 2026, 06:10£192.95
25 Oct 2026, 20:02£193.45

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