Core 2 Extreme QX9775 vs Core i7-7820X
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 941 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.46 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i7 | no data |
| Power efficiency | 2.96 | no data |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Skylake (server) (2017−2018) | Yorkfield (2007−2009) |
| Release date | 26 June 2017 (8 years ago) | 24 March 2008 (17 years ago) |
| Launch price (MSRP) | $599 | $1,499 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core i7-7820X and Core 2 Extreme QX9775 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 | 8 (Octa-Core) | 4 (Quad-Core) |
| Threads | 16 | 4 |
| Base clock speed | 3.6 GHz | 3.2 GHz |
| Boost clock speed | 4.5 GHz | 3.2 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | 1600 MHz |
| Multiplier | 36 | no data |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 6 MB (per die) |
| L3 cache | 11 MB (shared) | 0 KB |
| Chip lithography | 14 nm | 45 nm |
| Die size | no data | 2x 107 mm2 |
| Maximum core temperature | 99 °C | no data |
| Maximum case temperature (TCase) | 72 °C | 63 °C |
| Number of transistors | no data | 820 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | + |
| VID voltage range | no data | 0.85V-1.35V |
Compatibility
Information on Core i7-7820X and Core 2 Extreme QX9775 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 (Uniprocessor) | 2 |
| Socket | FCLGA2066 | LGA771 |
| Power consumption (TDP) | 140 Watt | 150 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-7820X and Core 2 Extreme QX9775. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | - |
| Hyper-Threading Technology | + | - |
| TSX | + | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Demand Based Switching | no data | - |
| Turbo Boost Max 3.0 | + | no data |
| FSB parity | no data | - |
Security technologies
Core i7-7820X and Core 2 Extreme QX9775 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | - |
| EDB | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-7820X and Core 2 Extreme QX9775 are enumerated here.
| VT-d | + | no data |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core 2 Extreme QX9775. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR2 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85.33 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by Core i7-7820X and Core 2 Extreme QX9775.
| PCIe version | 3.0 | 1.0 |
| PCI Express lanes | 28 | no data |
Pros & cons summary
| Recency | 26 June 2017 | 24 March 2008 |
| Physical cores | 8 | 4 |
| Threads | 16 | 4 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 140 Watt | 150 Watt |
i7-7820X has an age advantage of 9 years, 100% more physical cores and 300% more threads, a 221.4% more advanced lithography process, and 7.1% lower power consumption.
We couldn't decide between Intel Core i7-7820X and Intel Core 2 Extreme QX9775. We've got no test results to judge.
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