AMD Ryzen 9 9950X vs Intel Core Ultra 7 366H Comparison

The AMD Ryzen 9 9950X and the Intel Core Ultra 7 366H occupy opposite ends of the processor spectrum. The Ryzen 9 9950X is a desktop flagship built for maximum throughput, while the Core Ultra 7 366H is a mobile part engineered for efficiency. The benchmark data reflects this divide clearly: the Ryzen 9 9950X records 13 wins across the shared test suite, while the Intel chip secures 2. The Ryzen 9 9950X holds an average benchmark score of 74,640, placing it in the 94th percentile of all CPUs, whereas the Core Ultra 7 366H averages 41,263, which lands in the 87th percentile. The head-to-head results show a dominant performance gap, but the Intel processor demonstrates specific strengths in single-core tasks that make the comparison more nuanced than a simple aggregate score.

Where Each One Wins

The Ryzen 9 9950X is the clear winner in heavily threaded and compute-intensive workloads. Its advantage is most pronounced in integer math, where it scores 242,097 against 83,695 for the Core Ultra 7 366H, a delta of 189.3%. Data compression shows a similar story, with the AMD part reaching 896,544 versus 327,455, a 173.8% lead. These margins indicate that the Ryzen 9 9950X is built for rendering, scientific simulation, and content creation, tasks that scale with core count and memory bandwidth.

The Intel Core Ultra 7 366H, by contrast, wins in two specific single-threaded Cinebench tests. It takes the R15 single-core test with 405 points against 344 for the AMD part, a 15.1% advantage. The margin grows in R23 single-core, where Intel scores 4,020 versus 2,202, a 45.2% lead. This shows the Intel architecture has a significant per-core performance advantage, which matters for lightly threaded applications like legacy software, scripting, and certain game engines that rely on a single high-speed core.

The overall pattern is clear: the desktop chip dominates in any workload that uses multiple cores, while the mobile chip wins in raw single-thread speed. The data shows the AMD processor is the choice for sustained heavy lifting, while the Intel processor is better suited to tasks that depend on rapid single-core execution.

Architecture Differences

The two processors come from different design philosophies. The AMD Ryzen 9 9950X uses the Zen 5 architecture, codenamed Granite Ridge, built on a 4 nm process at TSMC. It is a desktop part for AMD Socket AM5 with a 170 W TDP. The Intel Core Ultra 7 366H uses the Panther Lake architecture, built on a 3 nm process at Intel, and is a mobile part for Intel BGA 2540 with a 25 W TDP.

Both chips have 16 cores, but the threading differs significantly. The AMD part supports 32 threads, while the Intel part runs 16 threads, meaning the Ryzen has simultaneous multithreading enabled and the Core Ultra does not. The cache layouts are also different. The Ryzen 9 9950X uses 80 KB of L1 and 1 MB of L2 per core, with a large 64 MB L3 cache. The Intel chip has 192 KB of L1 and 2.5 MB of L2 per core, but only 18 MB of shared L3. The larger L3 on the AMD part helps feed its many cores, while the Intel part relies on faster per-core L1 and L2.

Memory support also differs. The Ryzen 9 9950X supports DDR5 with a dual-channel bus and 89.6 GB/s of bandwidth. The Intel Core Ultra 7 366H supports DDR5 and LPDDR5X, also dual-channel, but with a higher memory bandwidth of 115.2 GB/s. The Intel part also lacks ECC memory support, which the AMD part includes. The PCIe configurations differ as well: the AMD processor provides Gen 5 with 24 lanes from the CPU, while the Intel part provides Gen 5 with 12 lanes. The Ryzen 9 9950X has an unlocked multiplier for overclocking, whereas the Core Ultra 7 366H is locked.

Head-to-Head Benchmarks

The largest single win for the Ryzen 9 9950X comes in the passmark integer math test. The AMD processor scores 242,097 against 83,695 for the Intel part, a 189.3% advantage. This test measures raw arithmetic throughput and highlights the benefit of 32 threads over 16. Data compression shows the second-largest gap, with the AMD part scoring 896,544 versus 327,455, a 173.8% lead. The extended instructions test follows, where AMD scores 71,564 against 26,901, a 166% difference.

The randomness-heavy workload, random string sorting, also favors AMD heavily. The Ryzen 9 9950X scores 94,368 versus 39,814, a 137% margin. The multithreaded passmark test confirms the trend: AMD scores 66,030 against 33,429, a 97.5% lead. Floating point math shows a 53.5% advantage for AMD, with scores of 159,063 and 103,615. Data encryption goes to AMD at 44,366 versus 25,845, a 71.7% margin. The Cinebench R23 multicore test shows AMD at 40,924 against 28,477, a 43.7% lead, while the R15 multicore test shows a 120.7% advantage, with scores of 6,335 and 2,870.

The Intel Core Ultra 7 366H wins both Cinebench single-core tests. In R15 single-core, it scores 405 against 344, a 15.1% margin. In R23 single-core, the gap is much larger: 4,020 versus 2,202, a 45.2% advantage. The passmark single-thread test, however, goes to the AMD part, with a score of 4,737 versus 4,043, a 17.2% lead. This indicates that while the Intel chip has a strong single-core design in Cinebench, the AMD chip still holds the edge in the passmark single-thread metric. The physics test is close, with AMD winning 3,279 versus 2,880, a 13.9% margin, and the prime numbers test is even closer, at 345 versus 326, a 5.8% lead for AMD.

FAQ

Q: Which processor has more threads?

A: The AMD Ryzen 9 9950X has 32 threads, while the Intel Core Ultra 7 366H has 16 threads.

Q: What is the difference in average benchmark scores?

A: The AMD Ryzen 9 9950X has an average benchmark score of 74,640, while the Intel Core Ultra 7 366H has an average score of 41,263.

Q: Which processor wins in single-core Cinebench tests?

A: The Intel Core Ultra 7 366H wins in Cinebench R15 single-core with 405 versus 344, and in R23 single-core with 4,020 versus 2,202.

Q: Does the AMD processor support ECC memory?

A: Yes, the AMD Ryzen 9 9950X supports ECC memory, while the Intel Core Ultra 7 366H does not.

Q: How do the memory bandwidth specifications compare?

A: The AMD Ryzen 9 9950X has a memory bandwidth of 89.6 GB/s, while the Intel Core Ultra 7 366H has a memory bandwidth of 115.2 GB/s.

Q: What is the largest performance gap in the head-to-head tests?

A: The largest gap is in passmark integer math, where the AMD Ryzen 9 9950X scores 242,097 against 83,695 for the Intel part, a 189.3% advantage.

Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen 9 9950X has a base clock of 4.30 GHz and a boost clock of 5.70 GHz, while the Intel Core Ultra 7 366H has a base clock of 2.00 GHz and a boost clock of 4.80 GHz. The AMD part has a TDP of 170 W, the Intel part has a TDP of 25 W. The AMD processor uses the Zen 5 architecture on a 4 nm process, while the Intel part uses the Panther Lake architecture on a 3 nm process. The AMD part is a desktop chip for AMD Socket AM5, while the Intel part is a mobile chip for Intel BGA 2540.

The cache configurations differ substantially. The AMD Ryzen 9 9950X has 80 KB of L1 and 1 MB of L2 per core, with 64 MB of L3. The Intel Core Ultra 7 366H has 192 KB of L1 and 2.5 MB of L2 per core, with 18 MB of shared L3. The AMD part supports DDR5 memory with a dual-channel bus and 89.6 GB/s bandwidth, and includes ECC support. The Intel part supports DDR5 and LPDDR5X, also dual-channel, with 115.2 GB/s bandwidth and no ECC support. The AMD processor provides Gen 5 PCIe with 24 lanes, while the Intel part provides Gen 5 with 12 lanes. The AMD part has an unlocked multiplier, the Intel part is locked. The AMD Ryzen 9 9950X has a launch MSRP of $649.