Intel Core i7-990X vs Intel Xeon L5638
Physical Specifications
| Socket | Intel Socket 1366 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 32 nm | 32 nm |
| Transistors | 1,170 million | 1,170 million |
| Die size | 239 mm² | 239 mm² |
| Package | FC-LGA10 | FC-LGA10 |
Performance
| Frequency | 3.466 GHz | 2000 MHz |
|---|---|---|
| Turbo clock | up to 3.733 GHz | up to 2.4 GHz |
| Base clock | 133 MHz | 133 MHz |
| Multiplier | 26.0x | 15.0x |
| Multiplier unlocked | Yes | No |
| Voltage | 1.375 V | 1.35 V |
| TDP | 130 W | 60 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Feb 24th, 2011 | Mar 16th, 2010 |
| Codename | Gulftown | Westmere-EP |
| Generation | Core i7 | Xeon |
| Part | SLBVZ | SLBWY |
| Memory support | DDR3 Triple-channel | 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 | 12MB (shared) | 12MB (shared) |
Notes
| Notes | This processor comes with an unlocked FSB 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 |
| EIST | — | 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 |
| TXT | — | Yes |
| VT-x | — | Yes |
| XD-Bit | — | Yes |
