Intel Core 2 Quad Q8400 vs Intel Core 2 Quad Q9400
Physical Specifications
| Socket | Intel Socket 775 | Intel Socket 775 |
|---|---|---|
| Foundry | Intel | Intel |
| Process size | 45 nm | 45 nm |
| Transistors | 456 million | 456 million |
| Die size | 2x 82 mm² | 2x 81 mm² |
| Package | FC-LGA6 | FC-LGA6 |
| tCaseMax | 71°C | 71°C |
Performance
| Frequency | 2.666 GHz | 2.666 GHz |
|---|---|---|
| Turbo clock | — | — |
| Base clock | 333 MHz | 333 MHz |
| Multiplier | 8.0x | 8.0x |
| Multiplier unlocked | No | No |
| Voltage | 1.11 V | 1.11 V |
| TDP | 95 W | 95 W |
Architecture Details
| Vertical Segment | Desktop | Desktop |
|---|---|---|
| Production status | End-of-life | End-of-life |
| Release date | Apr 19th, 2009 | Aug 10th, 2008 |
| Codename | Yorkfield | Yorkfield |
| Generation | Core 2 Quad | Core 2 Quad |
| Part | SLGT6 | SLB6B |
| Memory support | DDR1, DDR2, 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 | 64K (per core) | 64K (per core) |
|---|---|---|
| Cache L2 | 4MB (shared) | 6MB (shared) |
Features & Technologies
| EIST | Yes | Yes |
|---|---|---|
| Intel 64 | Yes | Yes |
| MMX | Yes | Yes |
| SSE | Yes | Yes |
| SSE2 | Yes | Yes |
| SSE3 | Yes | Yes |
| SSE4.1 | Yes | Yes |
| TXT | — | Yes |
| VT-x | — | Yes |
| iAMT2 | Yes | Yes |
