AMD Ryzen Threadripper 9980X vs Intel Core Ultra 7 356H Comparison

The AMD Ryzen Threadripper 9980X and Intel Core Ultra 7 356H occupy completely different corners of the processor market, and the benchmark data confirms this with absolute clarity. The Threadripper is a 64-core desktop monster built for maximum throughput, while the Ultra 7 356H is a 16-core mobile chip designed for efficiency in laptops. Across all 17 recorded head-to-head benchmark comparisons, the AMD part wins every single test, with victory margins ranging from a modest 11.4% in single-threaded workloads to a staggering 949.3% in integer math.

Where Each One Wins

The data shows that the AMD Ryzen Threadripper 9980X wins in every measured category, but the scale of its dominance varies dramatically depending on the workload type. The largest advantages appear in heavily parallel workloads that scale with core count and cache capacity. In Cinebench R23 multi-core, the Threadripper scores 130529 against the Ultra 7's 18395, a 609.6% advantage. PassMark integer math shows the biggest gap of all: 872071 versus 83111, a 949.3% delta. Data compression tells a similar story with 2974534 versus 336177, a 784.8% lead. These are workloads where the 64 cores, 128 threads, and 256 MB of L3 cache can be fully utilized.

The Intel Core Ultra 7 356H does not win any benchmark outright, but its results reveal where it is comparatively least disadvantaged. The closest margin is in PassMark single-thread performance, where the Threadripper scores 4537 and the Ultra 7 scores 4072, a delta of only 11.4%. This suggests that for lightly threaded tasks, the mobile chip's Panther Lake architecture keeps it within striking distance of the desktop flagship. The next closest margins are PassMark find prime numbers at 135.2% and PassMark physics at 176.4%, both of which are still substantial wins for AMD but far smaller than the multi-core gaps.

The pattern is consistent: the more threads a workload can use, the larger the Threadripper's advantage becomes. The Ultra 7's best relative performance comes in single-threaded and moderately threaded tasks, where its 4.70 GHz boost clock and 3 nm process node help narrow the gap. For any workload that scales across cores, the 64-core AMD part is in a different league entirely.

The Verdict

The recorded data makes the choice straightforward. The AMD Ryzen Threadripper 9980X is the processor for users whose workloads demand massive multi-threaded throughput: rendering, scientific computing, data compression, and heavy integer or floating-point math. Its 99th percentile ranking among all CPUs, an average benchmark score of 321753, and its position relative to rivals like the AMD Ryzen Threadripper PRO 9985WX (0.3% ahead) and Intel Xeon 6781P (2% ahead) place it firmly in workstation and server territory. It carries a 350 W TDP, uses the AMD Socket sTR5 platform, and supports quad-channel DDR5 memory with 204.8 GB/s of bandwidth. This is a part for a dedicated workstation build, not a general-purpose desktop.

The Intel Core Ultra 7 356H is for mobile systems where power efficiency and physical footprint matter more than raw compute. Its 25 W TDP, dual-channel memory support, and integrated Intel Xe3 Graphics make it a complete mobile package. It ranks in the 87th percentile of all CPUs with an average benchmark score of 41215, placing it right alongside comparable mobile parts like the AMD Ryzen AI 5 PRO 440 (0% delta) and Intel Core Ultra 7 366H (-0.1% delta). For a laptop user, its single-thread score of 4072 is respectable, but its multi-thread results are roughly one quarter of the Threadripper's output across most tests.

There is no meaningful overlap between these two products. The Threadripper wins every benchmark and is in the top 1% of all processors, but it cannot be placed in a laptop and requires a platform with far more power delivery and cooling. The Ultra 7 356H is a capable mobile processor that delivers competitive single-thread performance while consuming a fraction of the power. Pick the Threadripper for uncompromising compute density in a workstation. Pick the Ultra 7 for a balanced mobile processor with integrated graphics and low power draw.

Head-to-Head Benchmarks

The Cinebench suite shows the Threadripper's multi-core dominance most clearly. In Cinebench R23 multi-core, the AMD part scores 130529 against 18395 for the Intel part, a 609.6% difference. Cinebench R20 multi-core shows 54822 versus 12153, a 351.1% delta, and Cinebench R15 multi-core shows 13157 versus 3055, a 330.7% delta. The single-core Cinebench results are even more lopsided in percentage terms, though the absolute numbers are closer. Cinebench R23 single-core gives the Threadripper 18427 against 2040, an 803.3% lead. Cinebench R20 single-core shows 7739 versus 1715, a 351.3% delta. Cinebench R15 single-core shows 1857 versus 303, a 512.9% delta.

PassMark results follow the same pattern with even wider spreads in some tests. Integer math is the largest gap at 949.3%, with scores of 872071 and 83111. Data compression shows a 784.8% delta with 2974534 versus 336177. Extended instructions give the AMD part a 720.7% lead with 228959 against 27898. Random string sorting shows a 612.6% delta with 292083 versus 40990. Data encryption gives a 496.5% lead with 157137 against 26345. Floating-point math shows a 442% delta with 559003 versus 103128. PassMark multi-thread shows a 316.9% lead with 141641 against 33978. Physics shows a 176.4% delta with 8001 versus 2895.

The closest competition comes in PassMark single-thread and find prime numbers. Single-thread gives the Threadripper 4537 against 4072, a modest 11.4% lead. Find prime numbers shows 769 versus 327, a 135.2% delta. These two tests demonstrate that while the Intel mobile chip cannot beat the desktop flagship, its per-core efficiency keeps it competitive in workloads that do not scale with thread count. The 11.4% single-thread margin is the only test where the two processors are in the same performance class.

FAQ

Q: Does the Intel Core Ultra 7 356H win any benchmark against the AMD Ryzen Threadripper 9980X?

A: No. Across all 17 head-to-head benchmark comparisons in the database, the AMD Ryzen Threadripper 9980X wins every test.

Q: What is the largest performance difference between the two processors?

A: The largest gap is in PassMark integer math, where the Threadripper scores 872071 against the Ultra 7's 83111, a 949.3% advantage for AMD.

Q: What is the smallest performance difference between the two processors?

A: The smallest gap is in PassMark single-thread performance, where the Threadripper scores 4537 against the Ultra 7's 4072, an 11.4% advantage for AMD.

Q: How do the two processors compare in Cinebench R23 multi-core?

A: The Threadripper scores 130529, which is 609.6% higher than the Ultra 7's 18395.

Q: Which processor has integrated graphics?

A: The Intel Core Ultra 7 356H includes Intel Xe3 Graphics. The AMD Ryzen Threadripper 9980X has no integrated graphics (N/A).

Q: How do the two processors compare in terms of memory bandwidth?

A: The Threadripper supports quad-channel DDR5 with 204.8 GB/s of bandwidth, while the Ultra 7 supports dual-channel DDR5 and LPDDR5X with 115.2 GB/s of bandwidth.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen Threadripper 9980X uses the Zen 5 architecture under the codename Shimada Peak, built on a 4 nm process at TSMC. It contains 66,520 million transistors across 8 dies, each measuring 70.6 mm². The Intel Core Ultra 7 356H uses the Panther Lake architecture under the same codename, built on Intel's 3 nm process. The Intel part belongs to the Ultra 7 generation, specifically Panther Lake-H, while the AMD part belongs to the Ryzen Threadripper generation with the Zen 5 (Shimada Peak) microarchitecture.

Cache structures differ substantially. The Threadripper provides 64 KB of L1 per core, 1 MB of L2 per core, and 256 MB of L3 cache. The Ultra 7 provides 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The Threadripper's total cache pool is vastly larger, which contributes to its dominance in data-heavy workloads like compression and encryption. The Ultra 7 has no L3 cache advantage in total capacity, but its larger per-core L1 and L2 caches reflect its newer Panther Lake design.

The AMD part supports quad-channel DDR5 memory with 204.8 GB/s of bandwidth and includes ECC memory support. The Intel part supports dual-channel DDR5 and LPDDR5X with 115.2 GB/s of bandwidth and has no ECC support. PCIe connectivity also differs: the Threadripper provides Gen 5 with 80 lanes from the CPU, while the Ultra 7 provides Gen 5 with 12 lanes from the CPU. The Threadripper has no integrated graphics, while the Ultra 7 includes Intel Xe3 Graphics. The AMD multiplier is unlocked, allowing overclocking, while the Intel multiplier is locked. The Threadripper uses the AMD Socket sTR5 platform, and the Ultra 7 uses the Intel BGA 2540 socket.

Specification Differences

The core and thread counts define the performance gap. The AMD Ryzen Threadripper 9980X has 64 cores and 128 threads, while the Intel Core Ultra 7 356H has 16 cores and 16 threads. The Threadripper's base clock is 3.20 GHz with a boost clock of 5.40 GHz. The Ultra 7's base clock is 1.90 GHz with a boost clock of 4.70 GHz. Power consumption differs by an order of magnitude: the Threadripper has a 350 W TDP, while the Ultra 7 has a 25 W TDP.

The market segments reflect their intended use. The Threadripper is a desktop processor with an active production status and a launch MSRP of $4999. The Ultra 7 is a mobile processor with an active production status and no recorded launch MSRP. The Threadripper has a part number of 100-000001593, and the Ultra 7 has a part number of SA4RGQ9EU. The Threadripper was released on 2025-07-29, and the Ultra 7 was released on 2026-01-04. The Threadripper's average benchmark score is 321753 with a 99th percentile ranking, while the Ultra 7's average benchmark score is 41215 with an 87th percentile ranking. The nearest rival for the Threadripper is the AMD Ryzen Threadripper PRO 9985WX with a 0.3% delta, and the nearest rival for the Ultra 7 is the AMD Ryzen AI 5 PRO 440 with a 0% delta.