| Intel Core 2 Extreme QX6850 | Intel Core 2 Quad Q8400 | |
| 130 W | Max TDP | 95 W |
| NA | Power consumption per day (kWh) | NA |
| NA | Running cost per day | NA |
| NA | Power consumption per year (kWh) | NA |
| NA | Running cost per year | NA |
Intel Core 2 Extreme QX6850 vs Intel Core 2 Quad Q8400
The Intel Core 2 Extreme QX6850 operates with 4 cores and 4 CPU threads. It run at -- base -- all cores while the TDP is set at 130 W.The processor is attached to the LGA 775 CPU socket. This version includes -- of L3 cache on one chip, supports 2 memory channels to support DDR2-800DDR3-1066 RAM and features PCIe Gen lanes. Tjunction keeps below -- degrees C. In particular, Kentsfield (Core) Architecture is enhanced with 65 nm technology and supports VT-x. The product was launched on Q3/2007
The Intel Core 2 Quad Q8400 operates with 4 cores and 4 CPU threads. It run at -- base -- all cores while the TDP is set at 95 W.The processor is attached to the LGA 775 CPU socket. This version includes -- of L3 cache on one chip, supports 2 memory channels to support DDR2-800DDR3-1066 RAM and features PCIe Gen lanes. Tjunction keeps below -- degrees C. In particular, Yorkfield (Penryn) Architecture is enhanced with 45 nm technology and supports VT-x, VT-d. The product was launched on Q2/2009
Intel Core 2 Extreme QX6850
Intel Core 2 Quad Q8400
Compare Detail
| 3.00 GHz | Frequency | 2.66 GHz |
| 4 | Cores | 4 |
| -- | Turbo (1 Core) | -- |
| -- | Turbo (All Cores) | -- |
 No |
Hyperthreading | No |
 Yes |
Overclocking | No |
| normal | Core Architecture | normal |
| no iGPU | GPU | no iGPU |
| No turbo | GPU (Turbo) | No turbo |
| 65 nm | Technology | 45 nm |
| No turbo | GPU (Turbo) | No turbo |
| DirectX Version | ||
| Max. displays | ||
| DDR2-800DDR3-1066 | Memory | DDR2-800DDR3-1066 |
| 2 | Memory channels | 2 |
| Max memory | ||
| No |
ECC | No |
| 8.00 MB | L2 Cache | 4.00 MB |
| -- | L3 Cache | -- |
| PCIe version | ||
| PCIe lanes | ||
| 65 nm | Technology | 45 nm |
| LGA 775 | Socket | LGA 775 |
| 130 W | TDP | 95 W |
| VT-x | Virtualization | VT-x, VT-d |
| Q3/2007 | Release date | Q2/2009 |
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core 2 Extreme QX6850
420 (19%)
Intel Core 2 Quad Q8400
372 (16%)
Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core 2 Extreme QX6850
1,359 (3%)
Intel Core 2 Quad Q8400
1,156 (2%)
Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-Comparison. However the majority of CPUs have not been tested and the results have been estimated by a CPU-Comparison’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core 2 Extreme QX6850
2,272 (2%)
Intel Core 2 Quad Q8400
2,030 (2%)
Electric Usage Estimate
Electric Usage Estimate
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