Intel Core i7-3970X vs Intel Xeon X5647
Physical Specifications
| Socket | Intel Socket 2011 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 32 nm | 32 nm |
| Transistors | 2,270 million | 1,170 million |
| Die size | 435 mm² | 239 mm² |
| Package | FC-LGA10 | FC-LGA10 |
| tCaseMax | 70°C | — |
Performance
| Frequency | 3.5 GHz | 2.933 GHz |
|---|---|---|
| Turbo clock | up to 4 GHz | up to 3.2 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 35.0x | 22.0x |
| Multiplier unlocked | Yes | No |
| Voltage | 1.35 V | 1.35 V |
| TDP | 150 W | 130 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | unknown | End-of-life |
| Release date | Nov 1st, 2012 | Feb 14th, 2011 |
| Codename | Sandy Bridge-E | Westmere-EP |
| Generation | Core i7 | Xeon |
| Part | SR0WR | SLBZ7 |
| Memory support | DDR3 Quad-channel | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | Gen 3 | Gen 2 |
Cores
| Total Cores | 6 | 4 |
|---|---|---|
| Total Threads | 12 | 8 |
| 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) |
Notes
| Notes | This processor comes with an unlocked BCLK multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking. It is branded under the Extreme Edition label. | — |
|---|
Features & Technologies
| 5.86GT/s QPI | — | Yes |
|---|---|---|
| AES-NI | Yes | Yes |
| AVX | Yes | — |
| EIST | Yes | 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 |
| TXT | — | Yes |
| VT-d | Yes | — |
| VT-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
