AMD EPYC 7251 vs Intel Xeon E5-4650 Full Specs
8 Cores | 8 Cores |
16 Threads | 16 Threads |
Base Clock 2.1GHz | Base Clock 2.7GHz |
Boost Clock 3GHz | Boost Clock 3.3GHz |
Overclocking Locked | Overclocking Locked |
L1i 64KB | L1i 32KB |
L1d 32KB | L1d 32KB |
L2 512KB | L2 256KB |
L3 32MB | L3 20MB |
Type DDR4 | Type DDR3 |
Max Memory 64GB | Max Memory 384GB |
ECC Yes | ECC Yes |
Channels 8 | Channels 4 |
Bus Width 512-bit | Bus Width 256-bit |
Speed 2400MT/s | Speed 1600MT/s |
Bandwidth 153.6GB/s | Bandwidth 51.2GB/s |
Bandwidth Calculator Channels Transfer Rate ·· | Bandwidth Calculator Channels Transfer Rate ·· |
TDP 120W | TDP 130W |
Bus Type PCIe | Bus Type QPI |
Bus Config 4 lanes | Bus Config 16-bit |
Bus Speed 8GT/s | Bus Speed 8GT/s |
Bus Bandwidth 4GB/s | Bus Bandwidth 16GB/s |
PCIe PCIe 4.0 x128252GB/sBandwidth | PCIe PCIe 3.0 x4039.4GB/sBandwidth |
Manufacturer | Manufacturer |
ISA x86-64 | ISA x86-64 |
Architecture | Architecture |
Family | Family |
Branding  | Branding  |
Codename Naples ZeppelinDie - | Codename Sandy Bridge-E Sandy Bridge-EP-8Die Sandy Bridge-EP-8CVariant |
Market Segment Server | Market Segment Server |
Release Date Jun 1, 2017 | Release Date May 14, 2012 |
Foundry GlobalFoundries | Foundry Intel |
Fabrication Node 14LP | Fabrication Node 32nm |
Die Size 852mm² | Die Size 435mm² |
Transistor Count 19.2 Billion | Transistor Count 2.3 Billion |
Transistor Density 23 MTr/mm² | Transistor Density 5 MTr/mm² |
