Core i7-975 Extreme Edition vs Core 2 Extreme QX6700
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2536 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Series | Core 2 Extreme (Desktop) | Intel Core i7EE |
| Designer | Intel | Intel |
| Architecture codename | Kentsfield (2007) | Nehalem (2008−2010) |
| Release date | no data | 2 June 2009 (16 years ago) |
Detailed specifications
Core 2 Extreme (Desktop) QX6700 and Core i7-975 Extreme Edition basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 4 (Quad-Core) |
| Threads | 4 | 8 |
| Boost clock speed | 2.67 GHz | 3.33 GHz |
| Bus type | no data | QPI |
| Bus rate | 1066 MHz | 6.4 GT/s |
| Multiplier | no data | 25 |
| L1 cache | 64K (per core) | no data |
| L2 cache | 8 MB (shared) | 1 MB |
| L3 cache | 0 KB | 8 MB |
| Chip lithography | 65 nm | 45 nm |
| Die size | 2x 143 mm2 | 263 mm2 |
| Maximum case temperature (TCase) | 64 °C | no data |
| Number of transistors | 582 million | 731 Million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core 2 Extreme (Desktop) QX6700 and Core i7-975 Extreme Edition compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 (Uniprocessor) |
| Socket | 775 | no data |
| Power consumption (TDP) | 8 MB | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme (Desktop) QX6700 and Core i7-975 Extreme Edition. You'll probably need this information if you require some particular technology.
| Enhanced SpeedStep (EIST) | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme (Desktop) QX6700 and Core i7-975 Extreme Edition. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | no data |
| Maximum memory size | no data | 24 GB |
Pros & cons summary
| Threads | 4 | 8 |
| Chip lithography | 65 nm | 45 nm |
| Power consumption (TDP) | 8 Watt | 130 Watt |
Core 2 Extreme QX6700 has 1525% lower power consumption.
i7-975 Extreme Edition, on the other hand, has 100% more threads, and a 44.4% more advanced lithography process.
We couldn't decide between Intel Core 2 Extreme QX6700 and Intel Core i7-975 Extreme Edition. We've got no test results to judge.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
