AMD Phenom II X4 955 (125W) vs Intel Xeon E5520
Physical Specifications
| Socket | AMD Socket AM3 | Intel Socket 1366 |
|---|---|---|
| Process size | 45 nm | 45 nm |
| Transistors | 758 million | 731 million |
| Die size | 258 mm² | 263 mm² |
| Package | µPGA | FC-LGA8 |
| Foundry | — | Intel |
Performance
| Frequency | 3.2 GHz | 2.266 GHz |
|---|---|---|
| Turbo clock | — | up to 2.533 GHz |
| Base clock | 200 MHz | 133 MHz |
| Multiplier | 16.0x | 17.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.4 V | 1.35 V |
| TDP | 125 W | 80 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Apr 1st, 2009 | Mar 30th, 2009 |
| Codename | Deneb | Gainestown |
| Generation | Phenom II X4 | Xeon |
| Part | HDX955FBK4DGIHDX955FBK4DGMHDX955FBGMBOX | SLBFD |
| Memory support | DDR3 Dual-channel | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 4 | 4 |
|---|---|---|
| Total Threads | 4 | 8 |
| SMP # CPUs | 1 | 2 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 512K (per core) | 256K (per core) |
| Cache L3 | 6MB (shared) | 8MB (shared) |
Features & Technologies
| 3DNow! | Yes | — |
|---|---|---|
| AMD-V | Yes | — |
| AMD64 | Yes | — |
| EIST | — | Yes |
| HTT | — | Yes |
| Intel 64 | — | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.2 | — | Yes |
| SSE4A | Yes | — |
| SSSE3 | — | Yes |
| TXT | — | Yes |
| VT-x | — | Yes |
| XD-Bit | — | Yes |
