AMD Athlon II X4 651 vs Intel Core 2 Extreme X7900
Physical Specifications
| Socket | AMD Socket FM1 | Intel Socket P |
|---|---|---|
| Process size | 32 nm | 65 nm |
| Transistors | 1,178 million | unknown |
| Die size | 228 mm² | 143 mm² |
| Package | µPGA | FC-PGA |
| Foundry | — | Intel |
Performance
| Frequency | 3 GHz | 2.8 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 100 MHz | 200 MHz |
| Multiplier | 30.0x | 14.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.4125 V | 1.3 V |
| TDP | 100 W | 44 W |
Architecture Details
| Vertical Segment | Desktop | Mobile |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Nov 14th, 2011 | Aug 1st, 2007 |
| Codename | Llano | Merom XE |
| Generation | Athlon II X4 | Core 2 Extreme |
| Part | AD651XWNZ43GXAD651XWNGXBOX | SLAF4SLA33 |
| Memory support | DDR3 Dual-channel | DDR1 |
| ECC memory | No | No |
Cores
| Total Cores | 4 | 2 |
|---|---|---|
| Total Threads | 4 | 2 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K (per core) | 64K |
|---|---|---|
| Cache L2 | 1MB (per core) | 4MB |
Features & Technologies
| 3DNow! | Yes | — |
|---|---|---|
| AMD-V | Yes | — |
| AMD64 | Yes | — |
| EIST | — | Yes |
| Intel 64 | — | Yes |
| MMX | Yes | Yes |
| NX bit | Yes | — |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4A | Yes | — |
| SSSE3 | — | Yes |
| TXT | — | Yes |
| VT-x | — | Yes |
| XD bit | — | Yes |
| iAMT2 | — | Yes |
