AMD Ryzen 7 7700X vs AMD Ryzen 9 7940HX vs AMD Ryzen 9 7840HX
AMD Ryzen 7 7700X
► remove from comparison![AMD R7 7700X](fileadmin/_processed_/a/0/csm_AMD_Ryzen_7_7700X_ryzen_5_7600X_cinebench_r23_d9e0bfe14e.jpg)
The AMD Ryzen 7 7700X is a fast high-end desktop processor of the Raphael series. It offers 8 cores based on the Zen 4 architecture that supports hyperthreading (16 threads). The cores clock from 4.5 (base) up to 5.4 GHz (single core boost). Compared to the faster Ryzen 9 CPUs (like the 7900X), the R7 offers less cores and slightly lower clock speeds.
The performance of the R7 7700X is clearly better than the old Ryzen 7 of the 5000 generation thanks to the improved architecture and modern 5nm process. Compared to Intels Alder Lake Core i7-12900K the performance is quite similar but stays behind the newer Rocket Lake i5-13600K (multi-threaded).
The Raphael series still uses a chiplet design with two CCD-clusters (each with 8 possible cores, so only one used for the 7700X) in 5nm and an IO-die (including the memory controller and the Radeon Graphics iGPU) in 6nm.
AMD Ryzen 9 7940HX
► remove from comparison![AMD R9 7945HX](fileadmin/_processed_/9/4/csm_amd_dragon_range_7945hx_chip_801546e25d.jpg)
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 in 5nm (71mm²) and one IO die in 6nm (122mm²) which are all manufactured at TSMC.
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).
AMD Ryzen 9 7840HX
► remove from comparison![AMD R9 7840HX](fileadmin/_processed_/9/4/csm_amd_dragon_range_7945hx_chip_801546e25d.jpg)
The AMD Ryzen 9 7840HX is a high-end notebook processorfrom the Dragon Range series with 12 cores and hyperthreading (SMT), which means it can process up to 24 threads simultaneously. The CPU uses the current Zen 4 architecture for the 12 cores and clocks these from 2.9 GHz (base clock) up to 5.1 GHz (single-core boost). The CPU offers 12 MB L2 cache and 64 MB L3 cache (i.e. a total of 76 MB cache). The 7840X consists of three chiplets, two CCD clusters with a maximum of 8 CPU cores in 5nm (71mm²) and one IO die in 6nm (122mm²) which are all manufactured at TSMC.
The performance of the Ryzen 9 should be significantly faster than the old Ryzen 9 6980HX (top model Rembrandt H, 8 cores, max 5 GHz). This is achieved by the additional cores, higher clock rate and improved architecture. Compared to the one year older Ryzen 9 7845HX, the 7840HX is clocked 100 MHz lower.
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 7840HX is specified with 55 watts TDP and can be configured from 45 to 75 watts (cTDP).
Model | AMD Ryzen 7 7700X | AMD Ryzen 9 7940HX | AMD Ryzen 9 7840HX | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Series | AMD Raphael (Zen 4, Ryzen 7000) | AMD Dragon Range (Zen 4, Ryzen 7045) | AMD Dragon Range (Zen 4, Ryzen 7045) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Codename | Raphael (Zen4) | Dragon Range-HX (Zen 4) | Dragon Range-HX (Zen 4) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Series: Dragon Range (Zen 4, Ryzen 7045) Dragon Range-HX (Zen 4) |
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Clock | 4500 - 5400 MHz | 2400 - 5200 MHz | 2900 - 5100 MHz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L1 Cache | 512 KB | 1 MB | 768 KB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L2 Cache | 8 MB | 16 MB | 12 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
L3 Cache | 32 MB | 64 MB | 64 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Cores / Threads | 8 / 16 | 16 / 32 16 x 5.2 GHz AMD Zen 4 | 12 / 24 12 x 5.1 GHz AMD Zen 4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
TDP | 170 Watt | 55 Watt | 55 Watt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Transistors | 9.9 Million | 9900 Million | 9900 Million | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Technology | 5 nm, 0.650 - 1.475V | 5 nm | 5 nm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Die Size | 2x 70 (CCD) mm2 + 122 (I/O) mm2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
max. Temp. | 95 °C | 100 °C | 100 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Socket | AM5 (LGA 1718) | FL1 | FL1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Features | MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, x86-64, AMD-V, AES, AVX, AVX2, AVX512F, FMA3, SHA, Precision Boost 2 | 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 | 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
iGPU | AMD Radeon Graphics (Ryzen 7000) (400 - 2200 MHz) | AMD Radeon 610M (400 - 2200 MHz) | AMD Radeon 610M (400 - 2200 MHz) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Architecture | x86 | x86 | x86 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Announced | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Manufacturer | www.amd.com | www.amd.com | www.amd.com |