AMD Athlon II X4 638 vs Intel Xeon L5520
Physical Specifications
| Socket | AMD Socket FM1 | Intel Socket 1366 |
|---|---|---|
| Process size | 32 nm | 45 nm |
| Transistors | 1,178 million | 731 million |
| Die size | 228 mm² | 263 mm² |
| Package | µPGA | FC-LGA8 |
| Foundry | — | Intel |
Performance
| Frequency | 2.7 GHz | 2.266 GHz |
|---|---|---|
| Turbo clock | — | up to 2.533 GHz |
| Base clock | 100 MHz | 133 MHz |
| Multiplier | 27.0x | 17.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.4125 V | 1.35 V |
| TDP | 65 W | 60 W |
Architecture Details
| Vertical Segment | Desktop | Server/Workstation |
|---|---|---|
| Production status | unknown | End-of-life |
| Release date | Feb 6th, 2012 | Mar 30th, 2009 |
| Codename | Llano | Gainestown |
| Generation | Athlon II X4 | Xeon |
| Part | AD638XOJZ43GXAD638XOJGXBOX | SLBFA |
| Memory support | DDR3 Dual-channel | DDR3 Triple-channel |
| ECC memory | No | Yes |
| PCI Express | — | 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 | 1MB (per core) | 256K (per core) |
| Cache L3 | — | 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 |
