Core i7-975: specs and benchmarks
Aggregate performance score
Core i7-975 provides poor benchmark performance at 2.20% of a leader's which is a 96-core EPYC 9655P.
Summary
Intel started Core i7-975 sales 2 June 2009 at a recommended price of $476. This is a Bloomfield architecture desktop processor primarily aimed at office systems. It has 4 cores and 8 threads, and is based on 45 nm manufacturing technology, with a max turbo frequency of 3600 MHz and an unlocked multiplier.
Compatibility-wise, this is FCLGA1366 processor with a TDP of 130 Watt and a maximum temperature of 68 °C. It supports DDR3 memory.
Primary details
Core i7-975 processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 1848 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 0.13 | |
| Market segment | Desktop processor | |
| Series | Core i7 (Desktop) | |
| Power efficiency | 1.60 | of 100.00 (Ryzen Z1 Extreme) |
| Architecture codename | Bloomfield (2008−2010) | |
| Release date | 2 June 2009 (15 years ago) | |
| Launch price (MSRP) | $476 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 4 (Quad-Core) | |
| Threads | 8 | |
| Base clock speed | 3.33 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 3.6 GHz | of 6.2 GHz (Core i9-14900KS) |
| Bus rate | 1333 MHz | |
| L1 cache | 64 KB (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 256 KB (per core) | |
| L3 cache | 8 MB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 45 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 263 mm2 | |
| Maximum case temperature (TCase) | 68 °C | of 105 °C (Core i7-5950HQ) |
| Number of transistors | 731 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - | |
| Unlocked multiplier | + |
Compatibility
Information on Core i7-975 compatibility with other computer components and devices: 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 | of 8 (Opteron 842) |
| Socket | FCLGA1366 | |
| Power consumption (TDP) | 130 Watt | of 500 Watt (Xeon 6960P) |
Technologies and extensions
Technological capabilities and additional instructions supported by Core i7-975. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | |
| Enhanced SpeedStep (EIST) | + | |
| Turbo Boost Technology | 1.0 | |
| Hyper-Threading Technology | + | |
| Idle States | + | |
| Demand Based Switching | - | |
| PAE | 36 Bit |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | |
| EDB | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-x | + | |
| EPT | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Core i7-975's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR3 | |
| Maximum memory size | 24 GB | of 6 TiB (EPYC 9124) |
| Max memory channels | 3 | of 12 (Xeon Platinum 9221) |
| Maximum memory bandwidth | 25.6 GB/s | of 460.8 GB/s (EPYC 9124) |
Graphics specifications
General parameters of a GPU integrated into Core i7-975.
| Integrated graphics card | N/A |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 2.0 | of 5.0 (Core i9-12900K) |
Benchmark performance
Single-core and multi-core benchmark results of Core i7-975. Overall benchmark performance is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Cinebench 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
3DMark06 CPU
3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
Send your test results of Core i7-975.
AMD equivalent
According to our data, the closest AMD alternative to Core i7-975 is Phenom II 42 TWKR Black Edition, which is nearly equal in speed and lower by 1 position in our ranking.
Here are some closest AMD rivals to Core i7-975:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Core i7-975, according to our PC configuration statistics.
These are the fastest graphics cards for Core i7-975 in our user configuration statistics. There is a total of 55 configurations using Core i7-975 in our database.
