AMD EPYC 9255 vs Intel Xeon Gold 6138 Full Specs
24 Cores | 20 Cores |
48 Threads | 40 Threads |
Base Clock 3.25GHz | Base Clock 2GHz |
Boost Clock 4.3GHz | Boost Clock 3.7GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB | L1i 32KB |
L1d 48KB | L1d 32KB |
L2 1MB | L2 1MB |
L3 128MB | L3 27.5MB |
Type DDR5 | Type DDR4 |
Max Memory 6.14TB | Max Memory 768GB |
ECC Yes | ECC Yes |
Channels 12 | Channels 6 |
Bus Width 768-bit | Bus Width 384-bit |
Speed 6000MT/s | Speed 2666MT/s |
Bandwidth 576GB/s | Bandwidth 128GB/s |
Bandwidth Calculator Channels Transfer Rate ·· | Bandwidth Calculator Channels Transfer Rate ·· |
TDP 200W | TDP 125W |
cTDP-down 200W | cTDP-down - |
cTDP-up 240W | cTDP-up - |
T-Case - | T-Case 86°C Max |
Included Cooler 0 | Included Cooler 0 |
Bus Type PCIe | Bus Type UPI |
Bus Config 8 lanes | Bus Config 16-bit |
Bus Speed 32GT/s | Bus Speed 10.4GT/s |
Bus Bandwidth 32GB/s | Bus Bandwidth 20.8GB/s |
PCIe PCIe 5.0 x128504.1GB/sBandwidth | PCIe PCIe 3.0 x4847.3GB/sBandwidth |
Foundry TSMC | Foundry Intel |
Other Foundries TSMCIO | Other Foundries - |
Fabrication Node N4X N6IO | Fabrication Node 14nm - |
Die Size 282mm² 388mm²IO | Die Size 698mm² - |
Transistor Count 33.3 Billion 11 BillionIO | Transistor Count 11.9 Billion - |
Transistor Density 118 MTr/mm² 28 MTr/mm²IO | Transistor Density 17 MTr/mm² - |



