AMD Ryzen 3 3100U vs Intel Core Ultra 9 285K Comparison

Head-to-Head Benchmarks

The benchmark data shows a decisive advantage for the Intel Core Ultra 9 285K across every recorded workload. The Intel processor wins all 11 head-to-head comparisons, with the AMD Ryzen 3 3100U trailing by margins ranging from 68.7% to 97.4%. The smallest gap appears in single-threaded performance, where the Intel part scores 5087 against the AMD chip's 1592, a deficit of 68.7%. This suggests that even in lightly threaded tasks, the architectural and clock speed advantages of the Intel processor are substantial.

The largest discrepancies occur in floating-point math and prime number finding. In the floating-point math test, the Intel Core Ultra 9 285K scores 224324, while the AMD Ryzen 3 3100U manages only 5854, a delta of 97.4%. Similarly, the prime number test shows the Intel processor at 541 versus the AMD chip's 18, a 96.7% gap. These results indicate that the Intel part's higher core count and newer microarchitecture deliver overwhelming throughput in compute-intensive workloads.

Data compression and encryption benchmarks follow the same pattern. The Intel processor scores 790052 in data compression, compared to 38455 for the AMD part, a 95.1% difference. In data encryption, the scores are 57745 and 1972 respectively, a 96.6% gap. The multithread benchmark, which aggregates overall parallel performance, shows the Intel part at 67260 versus 3348 for the AMD chip, a 95% deficit. The physics test shows a 94.1% gap, with scores of 3938 and 232.

Random string sorting, a memory and cache sensitive workload, also favors the Intel processor heavily. The Intel part scores 94927, while the AMD chip scores 4666, a 95.1% difference. Extended instructions, which measures SIMD and specialized instruction throughput, shows the Intel part at 62277 versus 2116, a 96.6% gap. Integer math completes the sweep with the Intel part scoring 172379 against the AMD chip's 8873, a 94.9% difference.

The average benchmark scores in the database reinforce this picture. The Intel Core Ultra 9 285K has an average score of 83807, placing it in the 96th percentile of all CPUs. The AMD Ryzen 3 3100U has an average score of 6247, placing it in the 62nd percentile. The nearest rivals for the Intel part include the Intel Core Ultra 9 290K Plus with a delta of -0.2%, and the AMD EPYC 4584PX with a delta of 0.9%. The AMD chip's nearest rivals are the AMD Ryzen Threadripper 1950X (delta 0.3%) and the Intel Core i9-10920X (delta -1.6%).

Where Each One Wins

The Intel Core Ultra 9 285K wins in every category where performance is measured. Its strengths are most pronounced in parallel workloads, as evidenced by the 95% or greater margins in multithread, floating-point math, integer math, and data compression. The processor also leads decisively in single-threaded tests, where its 5.70 GHz boost clock and modern architecture deliver a 68.7% advantage over the AMD chip. For tasks like video rendering, scientific simulation, encryption, and code compilation, the Intel part's 24 cores and 24 threads provide a massive throughput advantage.

The AMD Ryzen 3 3100U has no recorded benchmark wins. Its 2 cores and 2 threads limit its performance profile to extremely light workloads, such as basic document editing or simple web browsing, though even these tasks would see significant performance gaps based on the single-thread scores. The AMD chip's 15W TDP and mobile market segment indicate it is designed for power-constrained environments, not raw performance. Its integrated Radeon Vega 8 graphics may handle basic display output, but the data does not include graphics benchmarks for either processor.

The Intel Core Ultra 9 285K's 36 MB of shared L3 cache and 3 MB of L2 cache per core give it a substantial advantage in cache-sensitive workloads, as shown by the random string sorting test. The AMD chip's 4 MB of shared L3 cache and 512 KB of L2 cache per core are far smaller. The Intel part also supports DDR5 memory with a bandwidth of 102.4 GB/s, compared to the AMD chip's DDR4 support at 38.4 GB/s, which further explains the performance deltas in memory-intensive tests.

The Verdict

The data indicates that the Intel Core Ultra 9 285K is the superior processor in every measured aspect. For users who require high multi-core throughput, the Intel part delivers scores that are 20 to 30 times higher than the AMD chip in several tests. The Intel processor's 96th percentile ranking versus the AMD chip's 62nd percentile places them in entirely different performance tiers. The Intel part's nearest rivals are all high-end server or desktop processors, while the AMD chip's nearest rivals include older high-core-count parts like the AMD Ryzen Threadripper 1950X and the Intel Core i9-10920X.

The AMD Ryzen 3 3100U is a mobile processor with a 15W TDP, designed for low-power laptops. Its performance profile is suitable only for basic tasks, and its benchmark scores reflect that positioning. The Intel Core Ultra 9 285K is a desktop processor with a 125W TDP, designed for maximum performance. Its launch MSRP is $589, and it includes features like an unlocked multiplier and ECC memory support that the AMD chip lacks.

FAQ

Q: Which processor has a higher single-thread score?

A: The Intel Core Ultra 9 285K scores 5087 in the single-thread test, while the AMD Ryzen 3 3100U scores 1592. The Intel part leads by 68.7%.

Q: How large is the gap in data compression performance?

A: The Intel Core Ultra 9 285K scores 790052 in data compression, while the AMD Ryzen 3 3100U scores 38455. The Intel part leads by 95.1%.

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 9 285K has 24 cores and 24 threads. The AMD Ryzen 3 3100U has 2 cores and 2 threads.

Q: What memory types do the two processors support?

A: The Intel Core Ultra 9 285K supports DDR5 memory with a bandwidth of 102.4 GB/s. The AMD Ryzen 3 3100U supports DDR4 memory with a bandwidth of 38.4 GB/s.

Q: Which processor has a larger L3 cache?

A: The Intel Core Ultra 9 285K has 36 MB of shared L3 cache. The AMD Ryzen 3 3100U has 4 MB of shared L3 cache.

Q: What is the percentile ranking of each processor?

A: The Intel Core Ultra 9 285K is in the 96th percentile of all CPUs. The AMD Ryzen 3 3100U is in the 62nd percentile.

Architecture Differences

The Intel Core Ultra 9 285K uses the Arrow Lake architecture, specifically the Arrow Lake-S codename, built on a 3 nm process by TSMC. It has 17,800 million transistors on a 243 mm² die. The AMD Ryzen 3 3100U uses the Picasso codename, based on the Zen+ architecture, built on a 12 nm process by GlobalFoundries. It has 4,940 million transistors on a 210 mm² die. The Intel part's newer process node and significantly higher transistor count enable its superior performance.

The cache hierarchy differs substantially. The Intel Core Ultra 9 285K has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 36 MB of shared L3 cache. The AMD Ryzen 3 3100U has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The Intel part also supports ECC memory, while the AMD chip does not. The Intel processor has an unlocked multiplier, while the AMD chip's multiplier is locked.

The integrated graphics differ as well. The Intel Core Ultra 9 285K uses Arc Xe-LPG Graphics with 64 execution units. The AMD Ryzen 3 3100U uses Radeon Vega 8. The PCIe support differs, with the Intel part offering Gen 5 with 20 lanes (CPU only) and the AMD chip offering Gen 3.

Specification Differences

The Intel Core Ultra 9 285K has 24 cores and 24 threads, while the AMD Ryzen 3 3100U has 2 cores and 2 threads. The base clock for the Intel part is 3.70 GHz, boosting to 5.70 GHz. The AMD chip has a base clock of 1.90 GHz, boosting to 3.20 GHz. The TDP ratings are 125W for the Intel part and 15W for the AMD chip.

The sockets differ: the Intel Core Ultra 9 285K uses Intel Socket 1851, while the AMD Ryzen 3 3100U uses AMD Socket FP5. The memory bus is dual-channel for both, but the Intel part supports DDR5 while the AMD chip supports DDR4. The process nodes are 3 nm for Intel and 12 nm for AMD. The market segments are Desktop for Intel and Mobile for AMD.

The release dates differ significantly, with the AMD Ryzen 3 3100U listed as released on 2026-05-31 and the Intel Core Ultra 9 285K released on 2024-10-23. The part numbers are SRQD5 for Intel and YM3100C4T2OFG for AMD. The Intel part has a launch MSRP of $589, while the AMD chip has no recorded launch MSRP. The production status for both is Active.