AMD Ryzen 9 7940HX vs Intel Core i7-12700K
AMD Ryzen 9 7940HX
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The AMD Ryzen 9 7940HX is a high-end notebook processor from the Dragon Range series with 16 cores and hyperthreading (SMT), which means it can process up to 32 threads simultaneously. The CPU uses the current Zen 4 architecture for the 16 cores and clocks these from 2.4 GHz (base clock) up to 5.2 GHz (single-core boost). The CPU offers 16 MB L2 cache and 64 MB L3 cache (i.e. a total of 80 MB cache). The 7940HX consists of three chiplets, two CCD clusters with 8 CPU cores each made with a 5nm node (71mm²) and one IO die on 6nm (122mm²), are all manufactured at TSMC's fabs.
The performance of the Ryzen 9 should be comparable to a Core i9-13900HX (24 hybrid cores, max 5.4 GHz) in the top range of mobile processors from 2024. AMD itself advertises a clear lead over the old Ryzen 9 6900HX (8 Zen 3 cores, 4.9 GHz), which can be explained by the additional cores, improved architecture and higher frequencies. Compared to the top model, the Ryzen 9 7945HX, the 7940HX is slightly lower clocked.
The chip also integrates 4x USB 3.2 Gen2 (10 Gbps) ports (no USB 4), 28 PCIe 5.0 lanes (for GPUs and SSDs), a dual-channel DDR5-5200 memory controller and a small AMD Radeon 610M graphics card (2CUs, 400 - 2200 MHz).
The R9 7940HX is specified with 55 watts TDP and can be configured up to 75 watts (cTDP).
Intel Core i7-12700K
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The Intel Core i7-12700K is a high end CPU for desktops based on the Alder Lake architecture. It was first announced in November 2021 and offers 8 performance cores and 4 efficiency cores. The performance cores (P-cores) support HyperThreading, leading to 20 Threads that can be processed at once. The performance cores can clock with up to 5 GHz (Turbo Boost Max 3.0), the efficiency cores can clock with up to 3.9 GHz. All cores can use 25 MB Smart Cache. The integrated memory controller supports up to 128 GB DDR5 with 4800 MT/s (dual channel).
Thread Director (in hardware) can support the operating system to decide which thread to use on the performance or efficiency cores for the best performance.
The integrated graphics adapter is based on the Xe-architecture and called Intel UHD Graphics 770. It clocks between 300 and 1.5 GHz.
For AI tasks, the CPU also integrates GNA 3.0 and DL Boost. Quick Sync in version 8 is the same as in the Rocket Lake CPUs and supports MPEG-2, AVC, VC-1 decode, JPEG, VP8 decode, VP9, HEVC and AV1 decode in hardware.
Performance
The average 12700K in our database is way ahead of the Ryzen 7 5800X and the Ryzen 9 3900X, as far as multi-thread benchmark scores are concerned. Which is a very, very impressive result, as of late 2022.
Power consumption
This Core i7 series chip has a Base power consumption of 125 W, with its highest Intel-recommended Turbo power consumption sitting at 190 W. It might be a good idea to get an AIO cooling solution for a chip this power hungry.
The i7-12700K is manufactured on Intel's fourth-generation 10 nm process marketed as Intel 7 for lower-than-average, as of early 2023, energy efficiency.
| Model | AMD Ryzen 9 7940HX | Intel Core i7-12700K | ||||||||||||||||||||||||||||||||||||||||||||
| Codename | Dragon Range-HX (Zen 4) | Alder Lake | ||||||||||||||||||||||||||||||||||||||||||||
| Series | AMD Dragon Range (Zen 4, Ryzen 7X4X/8X4X) | Intel Alder Lake-S | ||||||||||||||||||||||||||||||||||||||||||||
| Series: Alder Lake-S Alder Lake |
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| Clock | 2400 - 5200 MHz | 2700 - 5000 MHz | ||||||||||||||||||||||||||||||||||||||||||||
| L1 Cache | 1 MB | |||||||||||||||||||||||||||||||||||||||||||||
| L2 Cache | 16 MB | 12 MB | ||||||||||||||||||||||||||||||||||||||||||||
| L3 Cache | 64 MB | 25 MB | ||||||||||||||||||||||||||||||||||||||||||||
| Cores / Threads | 16 / 32 16 x 5.2 GHz AMD Zen 4 | 12 / 20 | ||||||||||||||||||||||||||||||||||||||||||||
| TDP | 55 Watt | 125 Watt | ||||||||||||||||||||||||||||||||||||||||||||
| Transistors | 9900 Million | |||||||||||||||||||||||||||||||||||||||||||||
| Technology | 5 nm | 10 nm | ||||||||||||||||||||||||||||||||||||||||||||
| max. Temp. | 100 °C | 100 °C | ||||||||||||||||||||||||||||||||||||||||||||
| Socket | FL1 | LGA1700 | ||||||||||||||||||||||||||||||||||||||||||||
| Features | DDR5-5200 RAM, PCIe 5, 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 | DDR4-3200/DDR5-4800 RAM, PCIe 5, Thr. Dir., DL Boost, GNA, vPro Enterp., MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, EIST, TM1, TM2, HT, Turbo, SST, AES-NI, RDRAND, RDSEED, SHA | ||||||||||||||||||||||||||||||||||||||||||||
| iGPU | AMD Radeon 610M (400 - 2200 MHz) | Intel UHD Graphics 770 (300 - 1500 MHz) | ||||||||||||||||||||||||||||||||||||||||||||
| Architecture | x86 | x86 | ||||||||||||||||||||||||||||||||||||||||||||
| Announced | ||||||||||||||||||||||||||||||||||||||||||||||
| Manufacturer | www.amd.com | ark.intel.com | ||||||||||||||||||||||||||||||||||||||||||||
| $409 U.S. |
Benchmarks
Average Benchmarks AMD Ryzen 9 7940HX → 100% n=7
Average Benchmarks Intel Core i7-12700K → 96% n=7
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
