Model Release date PCIe support[a] Multi-GPU USB support[b] Storage features Processor
overclocking
TDP CPU support Architecture Part number
CrossFire SLI SATA ports RAID AMD StoreMI Excavator Zen Zen+ Zen 2 Zen 3
A300 Feb 2017 None Untested None None Yes[1] No[2] No ~120 μW[c] No Yes[3][4] Knoll Express[5] 100-CG2978 218-0892000 KNOLL1
X300 Yes Yes[6] unknown
Pro 500 Jan 2020[7] Un­known No Partial[d] 218-0891003 unreleased
A320 Feb 2017[8][9] PCIe 2.0 ×4 No No 1, 2, 6 4 0,
1,
10
No Limited[e] ~5.8 W[10] Yes Yes Yes Varies[f] Promontory 218-0891004
B350 PCIe 2.0 ×6 Yes 2, 2, 6 Yes 218-0891005
X370 PCIe 2.0 ×8 Yes 2, 6, 6 8 218-0891006
B450 Mar 2018[11] PCIe 2.0 ×6 No 2, 2, 6 4 Yes Yes,
with PBO
Varies[g] Yes Varies[g][12] 218-0891011
X470 PCIe 2.0 ×8 Yes 2, 6, 6 8 218-0891008
A520 Aug 2020[13] PCIe 3.0 ×6 No 1, 2, 6 4 No Varies 218-0891015
B550[h] Jun 2020[14][15] PCIe 3.0 ×10 Yes Varies 2, 2, 6 6 Yes,
with PBO
~7W 218-0891014 - b550, 218-0891009 - B550A
X570 Jul 2019[16][17] PCIe 4.0 ×16 Yes 8, 0, 4 12 ~15 W[18][19][i] No Yes Yes Bixby 100-CG3091
  1. ^ PCIe lanes provided by the chipset. The CPU provides other PCIe 3.0 or 4.0 lanes.
  2. ^ USB 3.2 Gen 2x1, USB 3.2 Gen 1x1, USB 2.0
  3. ^ Knoll chipsets consume "insignificant power ...after [boot] in sleep mode", power figure based on a typical SPI controller
  4. ^ Limited to specific SKUs branded as Ryzen Pro and Athlon Pro
  5. ^ Only pre-Zen CPUs can be overclocked.
  6. ^ BIOS update needed. Availability may depend on manufacturer.
  7. ^ a b Beta BIOS updates may be made available by motherboard manufacturers.
  8. ^ OEM-only B550A is a rebranded B450
  9. ^ 7 watts on passive cooling (termed X570s).
  1. ^ "AMD Socket AM4 Chipset". AMD. Retrieved 26 January 2023.