AMD Athlon II X2 255 vs Intel Core 2 Extreme QX9650
Physical Specifications
| Socket | AMD Socket AM3 | Intel Socket 775 |
|---|---|---|
| Process size | 45 nm | 45 nm |
| Transistors | 410 million | 820 million |
| Die size | 117 mm² | 2x 107 mm² |
| Package | µPGA | FC-LGA4 |
| Foundry | — | Intel |
| tCaseMax | — | 64°C |
Performance
| Frequency | 3.1 GHz | 3 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 200 MHz | 333 MHz |
| Multiplier | 15.5x | 9.0x |
| Multiplier unlocked | No | Yes |
| Voltage | 1.15 V | 1.25 V |
| TDP | 65 W | 130 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Jan 25th, 2010 | Nov 30th, 2007 |
| Codename | Regor | Yorkfield |
| Generation | Athlon II X2 | Core 2 Extreme |
| Part | ADX255OCK23GQ | SLAN3 |
| Memory support | DDR3 Dual-channel | DDR1, DDR2, DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 2 | 4 |
|---|---|---|
| Total Threads | 2 | 4 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K | 64K (per core) |
|---|---|---|
| Cache L2 | 1MB | 12MB (shared) |
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 |
| SSE4.1 | — | Yes |
| SSE4A | Yes | — |
| SSSE3 | — | Yes |
| VT-x | — | Yes |
Notes
| Notes | — | This processor comes with an unlocked FSB multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking. It is branded under the Extreme Edition label. Also available with C1 Stepping, Part #: SLAWN, R |
|---|
