Intel Xeon E5-2643 v4 vs Intel Xeon E5-2666 v4 Full Specs
6 Cores 12 Threads 3.4GHz | 12 Cores 24 Threads 2.8GHz |
TDP 135W | TDP 145W |
Bandwidth 76.8GB/s DDR4 | Bandwidth 76.8GB/s DDR4 |
iGPU 0 | iGPU 0 |
Socket | Socket |
Xeon E5-2643 v41,226Xeon E5-2666 v41,1426 Cores | 12 Cores |
12 Threads | 24 Threads |
Base Clock 3.4GHz | Base Clock 2.8GHz |
Boost Clock 3.7GHz | Boost Clock 3.2GHz |
Overclocking Locked | Overclocking Locked |
L1i 32KB | L1i 32KB |
L1d 32KB | L1d 32KB |
L2 256KB | L2 256KB |
L3 20MB | L3 30MB |
Type DDR4 | Type DDR4 |
Max Memory 1.54TB | Max Memory 1.54TB |
ECC Yes | ECC Yes |
Channels 4 | Channels 4 |
Bus Width 256-bit | Bus Width 256-bit |
Speed 2400MT/s | Speed 2400MT/s |
Bandwidth 76.8GB/s | Bandwidth 76.8GB/s |
Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 76.8GB/s | Bandwidth Calculator Channels Transfer Rate Calculated Bandwidth 76.8GB/s |
TDP 135W | TDP 145W |
T-Case 75°C Max | T-Case - |
Included Cooler 0 | Included Cooler 0 |
Bus Type QPI | Bus Type QPI |
Bus Config 16-bit | Bus Config 16-bit |
Bus Speed 9.6GT/s | Bus Speed 9.6GT/s |
Bus Bandwidth 19.2GB/s | Bus Bandwidth 19.2GB/s |
PCIe PCIe 3.0 x4039.4GB/sBandwidth | PCIe PCIe 3.0 x4039.4GB/sBandwidth |
Manufacturer | Manufacturer |
ISA x86-64 | ISA x86-64 |
Architecture | Architecture |
Family | Family |
Branding  | Branding |
Codename Broadwell-DE Broadwell-E-LCCVariant | Codename Broadwell-DE Broadwell-E-MCCVariant |
Market Segment Server | Market Segment Server |
Release Date Apr 1, 2016 | Release Date Jan 1, 2016 |
Foundry Intel | Foundry Intel |
Fabrication Node 14nm | Fabrication Node 14nm |
Die Size 246mm² | Die Size 306mm² |
Transistor Count 3.4 Billion | Transistor Count 4.7 Billion |
Transistor Density 14 MTr/mm² | Transistor Density 15 MTr/mm² |
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