AMD Phenom II X4 840 vs Intel Core 2 Extreme QX6700
Physical Specifications
| Socket | AMD Socket AM3 | Intel Socket 775 |
|---|---|---|
| Process size | 45 nm | 65 nm |
| Transistors | 300 million | 582 million |
| Die size | 169 mm² | 2x 143 mm² |
| Package | µPGA | FC-LGA6 |
| Foundry | — | Intel |
| tCaseMax | — | 64°C |
Performance
| Frequency | 3.2 GHz | 2.666 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 200 MHz | 266 MHz |
| Multiplier | 16.0x | 10.0x |
| Multiplier unlocked | No | Yes |
| Voltage | 1.4 V | 1.34 V |
| TDP | 95 W | 130 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Jan 4th, 2011 | Nov 1st, 2006 |
| Codename | Propus | Kentsfield |
| Generation | Phenom II X4 | Core 2 Extreme |
| Part | HDX840WFK42GMHDX840WFGMBOX | SL9UL |
| Memory support | DDR3 Dual-channel | DDR1, DDR2, DDR3 Dual-channel |
| ECC memory | No | No |
| PCI Express | Gen 2 | Gen 2 |
Cores
| Total Cores | 4 | 4 |
|---|---|---|
| Total Threads | 4 | 4 |
| SMP # CPUs | 1 | 1 |
| Integrated graphics | — | — |
Cache
| Cache L1 | 128K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 512K (per core) | 8MB (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 |
| SSE4A | Yes | — |
| SSSE3 | — | Yes |
| VT-x | — | Yes |
| iAMT2 | — | 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. |
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