Intel Core 2 Extreme X7900 vs Intel Core i5-661
Physical Specifications
| Socket | Intel Socket P | Intel Socket 1156 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 65 nm | 32 nm |
| Transistors | unknown | 382 million |
| Die size | 143 mm² | 81 mm² |
| Package | FC-PGA | FC-LGA10 |
Performance
| Frequency | 2.8 GHz | 3.333 GHz |
|---|---|---|
| Turbo clock | — | up to 3.6 GHz |
| Base clock | 200 MHz | 133 MHz |
| Multiplier | 14.0x | 25.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.3 V | 1.4 V |
| TDP | 44 W | 87 W |
Architecture Details
| Vertical Segment | Mobile | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Aug 1st, 2007 | Jan 7th, 2010 |
| Codename | Merom XE | Clarkdale |
| Generation | Core 2 Extreme | Core i5 |
| Part | SLAF4SLA33 | SLBNESLBTB |
| Memory support | DDR1 | DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | — | Gen 2, 16 Lanes(CPU only) |
Cores
| Total Cores | 2 | 2 |
|---|---|---|
| Total Threads | 2 | 4 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | Intel HD |
Cache
| Cache L1 | 64K | 64K (per core) |
|---|---|---|
| Cache L2 | 4MB | 256K (per core) |
| Cache L3 | — | 4MB (shared) |
Features & Technologies
| EIST | Yes | — |
|---|---|---|
| HTT | — | Yes |
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4 | — | Yes |
| SSE4.1 | — | Yes |
| SSE4.2 | — | Yes |
| SSSE3 | Yes | Yes |
| TBT | — | Yes |
| TXT | Yes | Yes |
| VT-d | — | Yes |
| VT-x | Yes | Yes |
| XD bit | Yes | — |
| XD-Bit | — | Yes |
| iAMT2 | Yes | — |
