Intel Core i7-4820K vs Intel Xeon E5620
Physical Specifications
| Socket | Intel Socket 2011 | Intel Socket 1366 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 22 nm | 32 nm |
| Transistors | 1,860 million | 1,170 million |
| Die size | 257 mm² | 239 mm² |
| Package | FC-LGA10 | FC-LGA10 |
Performance
| Frequency | 3.7 GHz | 2.4 GHz |
|---|---|---|
| Turbo clock | up to 3.9 GHz | up to 2.666 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 37.0x | 18.0x |
| Multiplier unlocked | Yes | No |
| Voltage | 1.35 V | 1.35 V |
| TDP | 130 W | 80 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | unknown | End-of-life |
| Release date | Sep 1st, 2013 | Mar 16th, 2010 |
| Codename | Ivy Bridge-E | Westmere-EP |
| Generation | Core i7 | Xeon |
| Part | SR1AU | SLBV4 |
| Memory support | DDR3 Quad-channel | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | Gen 3 | Gen 2 |
Cores
| Total Cores | 4 | 4 |
|---|---|---|
| Total Threads | 8 | 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 | 10MB (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. | — |
|---|
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-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
