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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 ...
CPU PCIe Link PCIe support Multi-GPU support SATA USB 3.1 Gen 2 + 2.0 RAID Overclocking TDP Chipset lithography Notes CrossFire SLI; TRX40 [48] ×8 PCIe 4.0 ×8 Yes Yes 4 (+ up to 2 × 4 extra) 8 + 4 0,1,10 Yes 15 W [47] 14 nm HW-wise identical to X570 [citation needed]
Bus Speed & Type [a] Cache Socket Memory Controller Features L1 L2 L3 SIMD Speed/Power Other Changes Am386 Am386: Sx/SxL/SxLV [1] 1 No 25–40 [1] FSB 100 PQFP [1] discrete: Am486 [2] 500, 350 Am486: 1 No 25–120 FSB 8 168 pin PGA 208 SQFP discrete: 500, 350 Enhanced Am486: 66–120 FSB 8, 8/16 168 pin PGA 208 SQFP [3] Am5x86 350 Am5x86: X5 ...
PCIe 2.0 ×4 No No 1, 2, 6 4 0, 1, 10 No ... B550 [h] Jun 2020 [35] [36] PCIe 3.0 ×10 ... This would be achieved by disabling support for some older AM4 processors ...
Socket FM2+, [5] support for PCIe 3.0; Two or four CPU cores based on the Steamroller microarchitecture; AMD Heterogeneous System Architecture (HSA) 2.0; Dual-channel (2× 64 Bit) DDR3 memory controller; Integrated custom ARM Cortex-A5 co-processor [6] with TrustZone Security Extensions [7]
Socket: AM4. All the CPUs support DDR4-3200 in dual-channel mode. All the CPUs support 24 PCIe 4.0 lanes. 4 of the lanes are reserved as link to the chipset. No integrated graphics. L1 cache: 64 KB per core (32 KB data + 32 KB instruction). L2 cache: 512 KB per core. Fabrication process: TSMC 7FF.
The chiplet design separates the CPU cores, fabricated on TSMC's 7FF process, and the I/O, fabricated on GlobalFoundries' 12LP process, and connects them via Infinity Fabric. [50] The Ryzen 3000 series uses the AM4 socket similar to earlier models and is the first CPU to offer PCI Express 4.0 (PCIe) connectivity. [51]
The processors feature up to eight 7 nm-based "chiplet" processors with a 14 nm-based IO chip providing 128 PCIe 4.0 lanes in the center interconnected via Infinity Fabric. The processors support up to 8 channels of DDR4 RAM up to 4 TB, and introduce support for PCIe 4.0. These processors have up to 64 cores with 128 SMT threads per socket. [41]