i7-975 vs Ryzen 9 7940HX
Aggregate performance score
Ryzen 9 7940HX outperforms Core i7-975 by a whopping 1427% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 164 | 2060 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 0.13 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Dragon Range (Zen 4, Ryzen 7045) | Core i7 (Desktop) |
| Power efficiency | 23.45 | 0.65 |
| Designer | AMD | Intel |
| Manufacturer | TSMC | Intel |
| Architecture codename | Dragon Range-HX (Zen 4) (2023−2024) | Bloomfield (2008−2010) |
| Release date | 17 January 2024 (1 year ago) | 2 June 2009 (16 years ago) |
| Launch price (MSRP) | no data | $476 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Ryzen 9 7940HX and Core i7-975 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 | 16 (Hexadeca-Core) | 4 (Quad-Core) |
| Threads | 32 | 8 |
| Base clock speed | 2.4 GHz | 3.33 GHz |
| Boost clock speed | 5.2 GHz | 3.6 GHz |
| Bus rate | no data | 1333 MHz |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 1 MB (per core) | 256 KB (per core) |
| L3 cache | 64 MB (shared) | 8 MB (shared) |
| Chip lithography | 5 nm | 45 nm |
| Die size | 2x 71 mm2 | 263 mm2 |
| Maximum core temperature | 100 °C | no data |
| Maximum case temperature (TCase) | no data | 68 °C |
| Number of transistors | 13,140 million | 731 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| Unlocked multiplier | + | + |
Compatibility
Information on Ryzen 9 7940HX and Core i7-975 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 |
| Socket | FL1 | FCLGA1366 |
| Power consumption (TDP) | 55 Watt | 130 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 9 7940HX and Core i7-975. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME | Intel® SSE4.2 |
| AES-NI | + | - |
| FMA | + | - |
| AVX | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 1.0 |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Demand Based Switching | no data | - |
| PAE | no data | 36 Bit |
| Precision Boost 2 | + | no data |
Security technologies
Ryzen 9 7940HX and Core i7-975 technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 9 7940HX and Core i7-975 are enumerated here.
| AMD-V | + | - |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 9 7940HX and Core i7-975. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR5 | DDR3 |
| Maximum memory size | no data | 24 GB |
| Max memory channels | no data | 3 |
| Maximum memory bandwidth | no data | 25.6 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | AMD Radeon 610M (400 - 2200 MHz) | N/A |
Peripherals
Specifications and connection of peripherals supported by Ryzen 9 7940HX and Core i7-975.
| PCIe version | 5.0 | 2.0 |
| PCI Express lanes | 28 | no data |
Synthetic benchmarks
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating.
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. Other than that, Passmark measures multi-core performance.
Pros & cons summary
| Performance score | 30.54 | 2.00 |
| Recency | 17 January 2024 | 2 June 2009 |
| Physical cores | 16 | 4 |
| Threads | 32 | 8 |
| Chip lithography | 5 nm | 45 nm |
| Power consumption (TDP) | 55 Watt | 130 Watt |
Ryzen 9 7940HX has a 1427% higher aggregate performance score, an age advantage of 14 years, 300% more physical cores and 300% more threads, a 800% more advanced lithography process, and 136.4% lower power consumption.
The AMD Ryzen 9 7940HX is our recommended choice as it beats the Intel Core i7-975 in performance tests.
Be aware that Ryzen 9 7940HX is a notebook processor while Core i7-975 is a desktop one.
Other comparisons
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