Intel Core i7-5820K vs Intel Xeon E5649
Physical Specifications
| Socket | Intel Socket 2011-3 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 22 nm | 32 nm |
| Transistors | 2,600 million | 1,170 million |
| Die size | 356 mm² | 239 mm² |
| Package | — | FC-LGA10 |
Performance
| Frequency | 3.3 GHz | 2.533 GHz |
|---|---|---|
| Turbo clock | up to 3.6 GHz | up to 2.8 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 33.0x | 19.0x |
| Multiplier unlocked | No | No |
| TDP | 140 W | 80 W |
| Voltage | — | 1.35 V |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | Active | End-of-life |
| Release date | Sep 1st, 2014 | Feb 14th, 2011 |
| Codename | Haswell-E | Westmere-EP |
| Generation | Core i7 | Xeon |
| Part | SR20S | SLBZ8 |
| Memory support | DDR4 | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 6 | 6 |
|---|---|---|
| Total Threads | 12 | 12 |
| SMP # CPUs | 1 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 256K (per core) | 256K (per core) |
| Cache L3 | 15MB (shared) | 12MB (shared) |
Features & Technologies
| 5.86GT/s QPI | — | Yes |
|---|---|---|
| AES-NI | Yes | Yes |
| AVX | Yes | — |
| AVX2 | Yes | — |
| BMI1 | Yes | — |
| BMI2 | Yes | — |
| Boost 2.0 | Yes | — |
| CLMUL | Yes | — |
| EIST | Yes | Yes |
| F16C | Yes | — |
| FMA3 | Yes | — |
| HTT | Yes | Yes |
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.2 | Yes | Yes |
| SSSE3 | Yes | Yes |
| TSX | Yes | — |
| TXT | Yes | Yes |
| VT-d | Yes | — |
| VT-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
