AMD Ryzen 9 7940HX vs AMD Ryzen 9 7950X Comparison

The AMD Ryzen 9 7940HX and AMD Ryzen 9 7950X share a lineage, but the benchmark data positions them in distinctly different performance tiers. Both are 16-core Zen 4 parts, yet the desktop-focused 7950X dominates the head-to-head comparison, winning all 19 recorded benchmarks against the mobile 7940HX. The average benchmark scores tell a tight story—69,875 for the 7940HX versus 69,515 for the 7950X, a 0.5% delta—but the individual workload results reveal a much wider gulf in sustained performance.

Head-to-Head Benchmarks

The largest single margin comes in PassMark physics, where the 7950X scores 3,102 against the 7940HX’s 2,297, a 26% advantage. This is a synthetic test that stresses core scheduling and raw throughput, and the gap reflects the desktop chip’s ability to sustain higher power envelopes. Cinebench R23 multicore shows a similar story: the 7950X posts 36,523 versus 29,400, a 19.5% lead. That is a substantial difference for two processors with identical core and thread counts, and it underscores how thermal and power headroom translate directly into render performance.

The 3DMark suite reinforces the pattern, though with slightly smaller deltas. In 3DMark max threads, the 7950X scores 15,579 against 13,447, an 13.7% advantage. The 16-thread test shows 14,110 versus 12,501, an 11.4% gap, while the 8-thread test lands at 7,920 versus 7,158, a 9.6% difference. Even at lower thread counts, the desktop part maintains its edge: 3DMark 4-thread gives the 7950X a 4,218 to 3,844 win (8.9%), and 2-thread shows 2,161 versus 2,001 (7.4%). Single-thread performance in 3DMark is closer, with the 7950X ahead at 1,099 versus 1,027, a 6.6% margin.

Cinebench R23 single-core follows the same trajectory. The 7950X scores 2,000, while the 7940HX manages 1,807, a 9.6% deficit. PassMark single-thread results are comparable: 4,266 versus 3,942, a 7.6% gap. These consistent single-thread wins indicate the 7950X’s higher boost clock—5.70 GHz versus 5.20 GHz—provides a tangible benefit even in lightly threaded workloads.

The encryption and compression tests show the 7950X pulling away further. PassMark data encryption gives the desktop chip a 49,336 to 41,974 win (14.9%), while data compression shows 835,923 versus 693,741 (17%). Extended instructions follow suit: 62,131 versus 51,029, a 17.9% margin. Floating-point math is comparatively tighter at 138,004 versus 121,383 (12%), and integer math shows 225,603 versus 202,883 (10.1%). Random string sorting rounds out the list with an 98,501 to 81,775 result (17%).

The 7940HX’s closest rival data provides context for its standing. Its average score of 69,875 places it 0.2% behind the AMD Ryzen 7 9700F (69,996) and 0.4% behind the Intel Core i7-14700KF (70,163). It sits 0.5% ahead of the 7950X in average score, which is a statistical artifact of the different benchmark suites, but 0.7% ahead of the Intel Core i7-14700K (69,355). The 7950X, by comparison, is 0.2% ahead of the i7-14700K and 0.3% ahead of the AMD EPYC 9115 (69,288), while trailing the 7940HX by 0.5% and the 9700F by 0.7% in average score. Both chips sit at the 94th percentile among all CPUs, indicating they are firmly in the top tier of available processors.

Architecture Differences

Both processors are built on the same Zen 4 architecture and use TSMC’s 5 nm process node. They share identical transistor counts at 13,140 million and the same die size of 2x 71 mm². The L1 and L2 caches are identical as well, with 64 KB per core and 1 MB per core respectively. The L3 cache is 64 MB on both, though the 7950X lists it as shared while the 7940HX does not specify that detail.

The fundamental divergence lies in their target platforms. The 7940HX uses AMD Socket FL1 and is classified as a mobile part under the Dragon Range codename. The 7950X uses AMD Socket AM5 and is a desktop part under the Raphael codename. This distinction drives the most significant specification differences: base clock, TDP, and PCIe lane count.

The 7950X runs a 4.50 GHz base clock against the 7940HX’s 2.40 GHz, and its boost clock reaches 5.70 GHz versus 5.20 GHz. The TDP figures are starkly different—170 watts for the desktop chip versus 55 watts for the mobile chip. That 115-watt delta explains the consistent performance gaps across all benchmarks, as the desktop part can draw far more power to sustain high clocks under load.

PCIe support also differs. The 7940HX provides Gen 5 with 28 lanes (CPU only), while the 7950X offers Gen 5 with 24 lanes (CPU only). Both support DDR5 memory in a dual-channel configuration with identical 83.2 GB/s bandwidth. ECC memory support is another differentiator: the 7950X supports it, while the 7940HX does not. Integrated graphics differ as well, with the 7940HX featuring Radeon 610M and the 7950X featuring a generic Radeon Graphics solution. Both have unlocked multipliers, and both are currently in active production.

FAQ

Q: Which processor is faster in single-threaded workloads?

A: The AMD Ryzen 9 7950X leads in every single-thread test. In Cinebench R23 single-core, it scores 2,000 versus 1,807 for the 7940HX, a 9.6% advantage. PassMark single-thread shows 4,266 versus 3,942, a 7.6% gap.

Q: How large is the multi-core performance gap?

A: The 7950X wins Cinebench R23 multicore by 19.5%, scoring 36,523 against 29,400. PassMark multithread shows a 14.8% lead at 62,478 versus 53,204. The largest margin is in PassMark physics, where the 7950X is 26% faster.

Q: Do the two chips share the same core architecture?

A: Yes, both use the Zen 4 architecture on TSMC’s 5 nm process. They have identical transistor counts (13,140 million), die size (2x 71 mm²), and L3 cache (64 MB). The 7940HX uses the Dragon Range codename for mobile, while the 7950X uses Raphael for desktop.

Q: What explains the performance difference?

A: The base clock and TDP are the primary factors. The 7950X runs at 4.50 GHz base and 170 W TDP, while the 7940HX runs at 2.40 GHz base and 55 W TDP. The higher boost clock of 5.70 GHz versus 5.20 GHz also contributes.

Q: Are there differences in memory and expansion support?

A: Both support DDR5 with dual-channel memory and 83.2 GB/s bandwidth. The 7940HX provides 28 PCIe Gen 5 lanes, while the 7950X provides 24. The 7950X supports ECC memory, which the 7940HX does not.

Q: How do these chips compare to their nearest rivals?

A: The 7940HX’s average score of 69,875 is 0.2% behind the Ryzen 7 9700F and 0.4% behind the Core i7-14700KF, but 0.7% ahead of the Core i7-14700K. The 7950X’s average of 69,515 is 0.2% ahead of the Core i7-14700K and 0.3% ahead of the EPYC 9115.

The Verdict

The data is unambiguous: the AMD Ryzen 9 7950X is the faster processor across every measured workload. Its 19.5% lead in Cinebench R23 multicore and 26% lead in PassMark physics demonstrate that desktop power delivery translates directly into compute performance. The 7950X also wins every single-thread test, with margins ranging from 6.6% in 3DMark single-thread to 9.6% in Cinebench R23 single-core.

The 7940HX is not a weak chip—it sits at the 94th percentile among all CPUs and holds its own against desktop rivals like the Core i7-14700K, which it leads by 0.7% in average score. Its 55 W TDP is less than one-third of the 7950X’s 170 W envelope, which makes it a compelling option for mobile systems where power efficiency is paramount. The 7940HX also offers more PCIe lanes (28 versus 24), which could benefit certain expansion scenarios.

For users building a desktop workstation where maximum throughput is the priority, the 7950X is the clear choice. Its higher base clock, higher boost clock, and larger TDP headroom deliver consistent wins across rendering, encryption, and physics simulations. The 7950X also adds ECC memory support, which is valuable for data-integrity-sensitive workloads. The 7940HX, by contrast, is positioned for high-performance laptops where the 55 W TDP and mobile socket are prerequisites. Its 28 PCIe lanes and Radeon 610M integrated graphics suit a portable platform, and its performance, while behind the desktop part, still ranks in the top 6% of all CPUs.

Specification Differences

| Specification | AMD Ryzen 9 7940HX | AMD Ryzen 9 7950X |

|---|---|---|

| Base Clock | 2.40 GHz | 4.50 GHz |

| Boost Clock | 5.20 GHz | 5.70 GHz |

| TDP | 55 W | 170 W |

| Socket | AMD Socket FL1 | AMD Socket AM5 |

| Codename | Dragon Range | Raphael |

| ECC Memory | false | true |

| PCIe | Gen 5, 28 Lanes (CPU only) | Gen 5, 24 Lanes (CPU only) |

| Integrated Graphics | Radeon 610M | Radeon Graphics |

| Market Segment | Mobile | Desktop |

| Release Date | 2024-01-16 | 2022-09-26 |

| Launch MSRP | N/A | $699 |

| Part Number | 100-000001486 | 100-000000514 |