AMD Ryzen 9 7900X vs Intel Core Ultra 9 285T Comparison

Head-to-Head Benchmarks

The benchmark data reveals a clear split: the AMD Ryzen 9 7900X dominates throughput-oriented workloads, while the Intel Core Ultra 9 285T excels in single-threaded and lightly threaded tasks. Across the 15 recorded head-to-head comparisons, the AMD part claims 9 wins, with Intel taking 6.

The largest margin of victory belongs to AMD in the PassMark extended instructions test, where the Ryzen 9 7900X scores 47,619 against the Core Ultra 9 285T's 27,477, a 73.3% advantage. This is not a marginal lead; it indicates a substantial difference in vector and specialized instruction throughput. Similarly, in PassMark data compression, AMD posts 632,505 versus 384,140, a 64.7% gap. The Ryzen chip also wins PassMark random string sorting by 56.5% (74,658 vs. 47,695) and PassMark multithread by 28.7% (51,406 vs. 39,931). In integer math, AMD leads 169,273 to 132,433, a 27.8% advantage. Smaller AMD wins appear in data encryption (37,263 vs. 32,061, up 16.2%), find prime numbers (388 vs. 345, up 12.5%), and physics (3,060 vs. 2,842, up 7.7%). In Cinebench R15 multicore, AMD wins 4,820.5 to 3,384, a 42.4% margin.

Intel's wins are concentrated in single-thread and certain floating-point workloads. The most striking is Cinebench R23 single-core, where the Core Ultra 9 285T scores 4,739 against 2,016.5 for the Ryzen, a 57.4% advantage. Cinebench R15 single-core shows a 32.3% Intel lead (477 vs. 323), and PassMark single-thread shows a 7.4% lead (4,576 vs. 4,238). The Intel part also wins Cinebench R23 multicore outright, 33,573 to 29,300, a 12.7% margin, which is notable given AMD's multicore wins elsewhere. Finally, in PassMark floating-point math, Intel leads 137,923 to 103,952, a 24.6% advantage.

Interpreting these results, the AMD processor appears built for sustained parallel integer and compression workloads, while the Intel processor favors bursty, single-threaded execution and floating-point arithmetic. The Cinebench R23 multicore result for Intel is an outlier relative to its PassMark multithread loss, suggesting workload-specific scaling behavior rather than a universal multicore advantage.

FAQ

Q: Which processor has the higher single-thread score in Cinebench R23?

A: The Intel Core Ultra 9 285T scores 4,739 in Cinebench R23 single-core, which is 57.4% higher than the AMD Ryzen 9 7900X's 2,016.5.

Q: How do the two compare in PassMark multithread performance?

A: The AMD Ryzen 9 7900X leads with 51,406 points versus 39,931 for the Intel Core Ultra 9 285T, a 28.7% advantage for AMD.

Q: Which chip wins the most head-to-head benchmark comparisons?

A: The AMD Ryzen 9 7900X wins 9 of the 15 recorded head-to-head tests, while the Intel Core Ultra 9 285T wins 6.

Q: What is the biggest single benchmark margin between the two processors?

A: The largest margin is in PassMark extended instructions, where the AMD Ryzen 9 7900X scores 47,619 versus 27,477 for the Intel Core Ultra 9 285T, a 73.3% difference.

Q: Does the Intel processor win any multicore benchmarks?

A: Yes, the Intel Core Ultra 9 285T wins Cinebench R23 multicore with 33,573 points against 29,300 for the AMD Ryzen 9 7900X, a 12.7% lead.

Q: Are both processors in the same performance percentile overall?

A: Both are at the 91st percentile among all CPUs in the database, but their average benchmark scores differ slightly: the AMD Ryzen 9 7900X averages 53,288, while the Intel Core Ultra 9 285T averages 51,310.

Architecture Differences

The AMD Ryzen 9 7900X is built on Zen 4 architecture, codenamed Raphael, and belongs to the 7000 series. It uses a 5 nm process from TSMC and packs 13,140 million transistors across a die size of 2x 71 mm². The Intel Core Ultra 9 285T uses Arrow Lake architecture, specifically Arrow Lake-S, part of the Core Ultra Series 2. It is fabricated on a 3 nm TSMC process with 17,800 million transistors on a 243 mm² die.

Core counts differ significantly. The AMD chip has 12 cores and 24 threads, while the Intel chip has 24 cores and 24 threads. The thread parity despite core disparity indicates Intel relies on a different execution model, with no hyperthreading on the Ultra 9 285T. The AMD part has a base clock of 4.70 GHz and a boost clock of 5.60 GHz. The Intel part has a much lower base clock of 1.40 GHz but a boost clock of 5.40 GHz, reflecting a design tuned for power efficiency with high burst capability.

Cache hierarchies are also distinct. The AMD processor provides 64 KB of L1 cache per core, 1 MB of L2 per core, and 64 MB of shared L3 cache. The Intel processor offers 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3 cache. The AMD chip has a larger shared L3 pool, while Intel's per-core L1 and L2 allocations are larger.

Memory support is DDR5 for both, with dual-channel buses. However, memory bandwidth differs: AMD measures 83.2 GB/s, while Intel measures 102.4 GB/s. Both support ECC memory. PCIe connectivity also differs, with AMD offering Gen 5 with 24 CPU lanes and Intel offering Gen 5 with 20 CPU lanes. Integrated graphics differ as well: AMD includes Radeon Graphics, while Intel includes Arc Xe-LPG Graphics 64EU.

The Intel part launches with a locked multiplier, while the AMD part is multiplier unlocked. The AMD processor uses AMD Socket AM5, and the Intel processor uses Intel Socket 1851. The production status is Active for both.

Specification Differences

The two processors differ across several core specifications. The AMD Ryzen 9 7900X has 12 cores and 24 threads, while the Intel Core Ultra 9 285T has 24 cores and 24 threads. Base clock rates are 4.70 GHz for AMD and 1.40 GHz for Intel. Boost clocks are 5.60 GHz and 5.40 GHz respectively. TDP ratings diverge sharply: 170 W for AMD versus 35 W for Intel. The AMD chip uses a 5 nm node, while Intel uses 3 nm. Transistor counts are 13,140 million for AMD and 17,800 million for Intel. Die sizes are 2x 71 mm² for AMD and 243 mm² for Intel.

Cache configurations differ: AMD has 64 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. Intel has 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3. Memory bandwidth is 83.2 GB/s for AMD versus 102.4 GB/s for Intel. PCIe lane counts are 24 for AMD and 20 for Intel. Integrated graphics are Radeon Graphics on AMD and Arc Xe-LPG Graphics 64EU on Intel. The multiplier is unlocked on AMD and locked on Intel. Sockets are AM5 for AMD and Socket 1851 for Intel. Release dates are 2022-09-26 for AMD and 2025-01-06 for Intel. Launch MSRP is $549 for both.

Where Each One Wins

The AMD Ryzen 9 7900X is the choice for parallel integer-heavy workloads. Its wins in PassMark integer math (27.8% ahead), PassMark multithread (28.7% ahead), and PassMark data compression (64.7% ahead) point to strength in compilation, data processing, and general productivity tasks. The 73.3% lead in extended instructions suggests advantages in applications that use vectorized or specialized instruction sets. The 56.5% win in random string sorting reinforces this profile, indicating strong performance in sorting, database operations, and text processing. The 42.4% lead in Cinebench R15 multicore also supports a rendering and multi-threaded productivity recommendation.

The Intel Core Ultra 9 285T is the pick for single-threaded responsiveness and floating-point workloads. Its 57.4% lead in Cinebench R23 single-core and 32.3% lead in Cinebench R15 single-core are decisive for applications that depend on a single fast core, such as legacy software, certain simulation tools, and interactive design applications. The 24.6% lead in PassMark floating-point math indicates an edge in scientific computing, 3D rendering, and financial modeling that rely heavily on FPU throughput. Additionally, the Intel chip wins Cinebench R23 multicore by 12.7%, so users running that specific renderer may see better results on Intel despite AMD's broader multithread wins.

The Verdict

The data supports a straightforward conclusion. For users prioritizing raw multithreaded throughput, compression, encryption, integer math, and specialized instruction execution, the AMD Ryzen 9 7900X is the stronger processor. It wins 9 of 15 head-to-head comparisons, often by large margins exceeding 50%. Its 64 MB shared L3 cache and 24 threads at a 4.70 GHz base clock make it well suited for sustained parallel workloads.

For users prioritizing single-thread performance, floating-point math, and energy efficiency, the Intel Core Ultra 9 285T is the better fit. Its massive single-core leads in Cinebench R23 and R15, combined with a 35 W TDP, make it attractive for lightly threaded applications and power-constrained systems. The Intel chip also wins Cinebench R23 multicore, so that specific benchmark favors it.

Both processors sit at the 91st percentile overall, with average scores of 53,288 for AMD and 51,310 for Intel. The AMD part edges out the Intel part in average score, but the workload profile matters more than the aggregate. Users who know their applications rely on integer throughput should choose AMD. Users who need fast single-core execution or floating-point performance should choose Intel. The 170 W TDP of the AMD chip versus 35 W for Intel also suggests that system power budgets may be a deciding factor, though thermal solution selection is outside the scope of this analysis.