AMD Ryzen 9 9950X vs Intel Core Ultra 7 356H Comparison

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 9 9950X records an average benchmark score of 74,640, while the Intel Core Ultra 7 356H sits at 41,215. The AMD part also ranks in the 94th percentile among all CPUs, compared to the 87th percentile for the Intel part.

Q: Do both processors use the same number of cores?

A: Yes, both have 16 cores, but the thread counts differ sharply. The AMD Ryzen 9 9950X supports 32 threads, while the Intel Core Ultra 7 356H supports only 16 threads.

Q: Which processor wins in single-threaded performance?

A: The AMD Ryzen 9 9950X leads in every recorded single-thread test. In Cinebench R23 single-core, it scores 2,202 versus 2,040 for the Intel part, a 7.9% advantage. In PassMark single-thread, the AMD scores 4,737 versus 4,072, a 16.3% lead.

Q: Are both processors unlocked for overclocking?

A: No. The AMD Ryzen 9 9950X has an unlocked multiplier, but the Intel Core Ultra 7 356H has a locked multiplier.

Q: What memory types does each processor support?

A: The AMD Ryzen 9 9950X supports DDR5 only, while the Intel Core Ultra 7 356H supports both DDR5 and LPDDR5X.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen 9 9950X boosts to 5.70 GHz, while the Intel Core Ultra 7 356H boosts to 4.70 GHz.

Architecture Differences

The AMD Ryzen 9 9950X is a desktop part built on the Zen 5 architecture with the Granite Ridge codename. It uses a 4 nm process from TSMC and packs 16,630 million transistors across a dual-die design with two 70.6 mm² dies. The Intel Core Ultra 7 356H is a mobile processor using the Panther Lake architecture on Intel's 3 nm node. The AMD chip is a 16-core, 32-thread processor, while the Intel chip is a 16-core, 16-thread processor, meaning the AMD part uses simultaneous multithreading and the Intel part does not.

Cache layouts differ substantially. The AMD Ryzen 9 9950X offers 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of shared L3 cache. The Intel Core Ultra 7 356H provides 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The larger per-core L1 and L2 on the Intel part do not compensate for the AMD part's much larger L3 pool in the recorded benchmarks.

The AMD processor uses the AM5 socket and supports ECC memory, while the Intel part uses the BGA 2540 socket and does not support ECC. The AMD chip offers 24 PCIe Gen 5 lanes, whereas the Intel chip offers 12 PCIe Gen 5 lanes. Integrated graphics also differ: the AMD uses Radeon Graphics, and the Intel uses Intel Xe3 Graphics. The AMD part has a 170 W TDP, while the Intel part is rated at 25 W, reflecting their desktop versus mobile positioning.

Head-to-Head Benchmarks

The recorded head-to-head data shows a clean sweep: the AMD Ryzen 9 9950X wins all 15 benchmark comparisons, with the Intel Core Ultra 7 356H taking zero wins. The margins vary widely by workload, from modest single-thread gaps to massive multi-thread and math-oriented leads.

The largest AMD advantage appears in PassMark integer math, where the Ryzen 9 9950X scores 242,097 against 83,111 for the Intel Core Ultra 7 356H, a 191.3% delta. Data compression shows a 166.7% lead, with scores of 896,544 versus 336,177. Extended instructions follow at 156.5% (71,564 versus 27,898). Random string sorting is 130.2% ahead (94,368 versus 40,990). Cinebench R23 multicore shows a 122.5% gap, with the AMD scoring 40,924 versus 18,395. Cinebench R15 multicore is 107.4% higher at 6,335 versus 3,055.

The AMD lead narrows but remains substantial in other multi-thread tests. PassMark multithread shows a 94.3% advantage (66,030 versus 33,978). Data encryption is 68.4% ahead (44,366 versus 26,345). Floating point math is 54.2% higher (159,063 versus 103,128). PassMark physics is 13.3% ahead (3,279 versus 2,895).

Single-thread results are closer but still favor AMD. PassMark single-thread shows a 16.3% lead (4,737 versus 4,072). Cinebench R15 single-core is 13.5% higher (344 versus 303). Cinebench R23 single-core is 7.9% ahead (2,202 versus 2,040). PassMark find prime numbers is the tightest gap at 5.5% (345 versus 327).

The average benchmark score difference reinforces the head-to-head picture. The AMD Ryzen 9 9950X averages 74,640, while the Intel Core Ultra 7 356H averages 41,215. The AMD part's nearest rival, the AMD Ryzen 7 PRO 9745, scores 74,761, a delta of -0.2%, meaning the 9950X essentially trades blows with that chip. The Intel Core Ultra 7 356H's nearest rival, the AMD Ryzen AI 5 PRO 440, scores 41,208, a delta of 0.0%, showing the Intel part is right at parity with that processor.

Specification Differences

The two processors differ across nearly every major specification field. The AMD Ryzen 9 9950X has a 4.30 GHz base clock and 5.70 GHz boost clock. The Intel Core Ultra 7 356H has a 1.90 GHz base clock and 4.70 GHz boost clock. The AMD part draws 170 W TDP, the Intel part 25 W.

The AMD Ryzen 9 9950X uses the AMD Socket AM5, while the Intel Core Ultra 7 356H uses Intel BGA 2540. The AMD chip is built on a 4 nm process from TSMC, the Intel chip on a 3 nm process from Intel. The AMD chip has 16,630 million transistors and a dual-die layout with two 70.6 mm² dies; the Intel chip has no transistor or die size data recorded.

Cache configurations differ as noted: L1 is 80 KB per core on AMD versus 192 KB per core on Intel; L2 is 1 MB per core on AMD versus 2.5 MB per core on Intel; L3 is 64 MB shared on AMD versus 18 MB shared on Intel.

Memory support differs: the AMD part supports DDR5 only, the Intel part supports DDR5 and LPDDR5X. Both use dual-channel memory, but the Intel part records a higher memory bandwidth at 115.2 GB/s versus 89.6 GB/s for the AMD part. ECC memory is supported on AMD but not on Intel.

PCIe lane counts differ: 24 Gen 5 lanes on AMD versus 12 Gen 5 lanes on Intel. The integrated graphics are Radeon Graphics on AMD and Intel Xe3 Graphics on Intel. The AMD part has an unlocked multiplier; the Intel part is locked. The AMD chip launched on 2024-08-14 with a launch MSRP of $649. The Intel chip launched on 2026-01-04 with no recorded launch MSRP.

Where Each One Wins

The AMD Ryzen 9 9950X wins across every benchmark category recorded in the database, so the use-case split is defined by the magnitude of its lead rather than by any Intel victory. The AMD part is the clear choice for multi-threaded desktop workloads. Its 32 threads give it a 122.5% lead in Cinebench R23 multicore and a 94.3% lead in PassMark multithread, making it dominant for rendering, video encoding, and heavy productivity tasks. The 191.3% lead in integer math and 156.5% lead in extended instructions point to strong performance in scientific computing and code compilation.

The AMD part also wins single-thread tests, but by smaller margins. Its 7.9% lead in Cinebench R23 single-core and 16.3% lead in PassMark single-thread suggest that in lightly threaded applications, the gap is less dramatic but still consistently in AMD's favor. For tasks like data compression, the 166.7% lead means the AMD part finishes large archiving jobs much faster. Data encryption is 68.4% ahead, which matters for security workloads.

The Intel Core Ultra 7 356H does not win any recorded benchmark, but its profile fits a different environment. The 25 W TDP and mobile BGA 2540 socket indicate a low-power laptop processor. The Intel part supports LPDDR5X memory, which is common in thin-and-light mobile designs, and its higher memory bandwidth of 115.2 GB/s suggests the platform is tuned for power efficiency rather than raw throughput. The Intel part also has larger per-core L1 and L2 caches, which may help in latency-sensitive mobile workloads, though the recorded data does not show a benchmark where that translates into a win.

The closest recorded contest is PassMark find prime numbers, where the AMD part leads by only 5.5%. That narrow margin indicates the Intel part is competitive in certain integer-heavy single-thread tasks, but the overall pattern is unambiguous. The AMD Ryzen 9 9950X sits in the 94th percentile of all CPUs with an average score of 74,640, while the Intel Core Ultra 7 356H sits in the 87th percentile with 41,215. The AMD part's nearest rivals are desktop and server chips like the AMD Ryzen 7 PRO 9745 and AMD EPYC 4545P, while the Intel part's nearest rivals include the AMD Ryzen AI 5 PRO 440 and the Intel Core Ultra 7 366H, confirming the two processors target entirely different performance classes.