AMD Ryzen Embedded 9900X3D vs Intel Core Ultra 5 250K Plus Comparison

The Verdict

The recorded data positions the AMD Ryzen Embedded 9900X3D and Intel Core Ultra 5 250K Plus as fundamentally different desktop processors. The AMD part delivers a 12-core, 24-thread configuration with a 128 MB L3 cache and a 5.50 GHz boost clock, aimed at workloads that scale with thread count and cache capacity. The Intel part provides 18 cores, 18 threads, a 30 MB shared L3 cache, and a 5.30 GHz boost clock, with benchmark scores that place it in the 93rd percentile of all CPUs, compared to the AMD part’s 50th percentile. The database shows that the Intel Core Ultra 5 250K Plus has an average benchmark score of 66855, while the AMD Ryzen Embedded 9900X3D has no recorded benchmark scores or rival comparisons. Consequently, the Intel processor is the only one of the two with measurable performance data, and the analysis must rely on its recorded wins. The AMD part is an active, unlocked desktop CPU with ECC memory support and Radeon integrated graphics, but without benchmark results, its practical standing cannot be quantified from the database. The Intel part, with a launch MSRP of $199, shows a clear performance profile across Cinebench and Passmark tests, making it the defensible choice for users who require verified multi-threaded and single-threaded results.

Where Each One Wins

The Intel Core Ultra 5 250K Plus wins in every benchmark category where data exists. In Cinebench R15 multicore, it scores 4640, and in R15 singlecore, it scores 328. The R20 results show 18442 for multicore and 2603 for singlecore, while R23 delivers 30867 for multicore and 2261 for singlecore. The Passmark suite confirms the pattern: multithread score of 51596, single thread score of 4757, integer math at 125091, floating point math at 162692, data compression at 568721, data encryption at 42144, extended instructions at 44565, find prime numbers at 486, physics at 3494, and random string sorting at 69090. These numbers indicate that the Intel part is competitive in both heavily threaded rendering workloads and latency-sensitive single-thread tasks. The AMD Ryzen Embedded 9900X3D has no recorded benchmarks, so the database provides no evidence of wins for that processor. The AMD part’s specification sheet shows a higher boost clock (5.50 GHz vs 5.30 GHz) and a larger L3 cache (128 MB vs 30 MB), which could theoretically favor cache-heavy workloads, but without measured results, such advantages remain unverified. The Intel part’s 18 cores versus the AMD part’s 12 cores, combined with its recorded Cinebench R23 multicore score of 30867, suggests a strong position for parallel compute tasks, while the AMD part’s 24 threads versus the Intel part’s 18 threads does not translate into any recorded performance advantage.

Architecture Differences

The two processors come from different fabrication nodes and microarchitectures. The AMD Ryzen Embedded 9900X3D uses a 4 nm process from TSMC, with a codename of Granite Ridge and a generation label of Ryzen Embedded (Zen 5 (Granite Ridge)). It contains 16,630 million transistors across a die size of 2x 70.6 mm². The Intel Core Ultra 5 250K Plus uses a 3 nm process from TSMC, with a codename of Arrow Lake Refresh and a generation label of Ultra 5 (Arrow Lake). It contains 17,800 million transistors on a 243 mm² die. These differences indicate that the Intel part uses a denser process node and a single larger die, while the AMD part uses a chiplet design of two smaller dies. Cache structures differ significantly: the AMD part provides 80 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3, while the Intel part provides 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. The AMD L3 cache is over four times larger, which may benefit repeated data access patterns, but the Intel L2 cache is three times larger per core. Memory support is DDR5 for both, with dual-channel buses, but the Intel part achieves 115.2 GB/s bandwidth versus the AMD part’s 89.6 GB/s. Both support ECC memory, and both have unlocked multipliers. PCIe connectivity differs: the AMD part offers Gen 5 with 24 lanes (CPU only), while the Intel part offers Gen 5 with 20 lanes (CPU only). Integrated graphics differ as well: the AMD part uses Radeon Graphics, while the Intel part uses Arc Xe-LPG Graphics 64EU. The AMD part uses AMD Socket AM5, while the Intel part uses Intel Socket 1851. The AMD part was released on 2025-10-06, while the Intel part was released on 2026-03-10, making the Intel part the newer release.

FAQ

Q: Which processor has a higher boost clock?

A: The AMD Ryzen Embedded 9900X3D has a boost clock of 5.50 GHz, while the Intel Core Ultra 5 250K Plus has a boost clock of 5.30 GHz, giving the AMD part a 0.20 GHz advantage.

Q: How do the core and thread counts compare?

A: The AMD part has 12 cores and 24 threads, while the Intel part has 18 cores and 18 threads. The Intel part has 6 more physical cores, but the AMD part has 6 more threads due to simultaneous multithreading.

Q: Which processor has more L3 cache?

A: The AMD Ryzen Embedded 9900X3D has 128 MB of L3 cache, while the Intel Core Ultra 5 250K Plus has 30 MB of shared L3 cache, a difference of 98 MB in favor of the AMD part.

Q: What is the average benchmark score for each processor?

A: The Intel Core Ultra 5 250K Plus has an average benchmark score of 66855, placing it in the 93rd percentile of all CPUs. The AMD Ryzen Embedded 9900X3D has an average benchmark score of 0 and a percentile of 50, with no recorded benchmarks in the database.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen Embedded 9900X3D and the Intel Core Ultra 5 250K Plus support ECC memory.

Q: Which processor has a higher memory bandwidth?

A: The Intel Core Ultra 5 250K Plus has a memory bandwidth of 115.2 GB/s, while the AMD Ryzen Embedded 9900X3D has a memory bandwidth of 89.6 GB/s, a difference of 25.6 GB/s in favor of the Intel part.

Head-to-Head Benchmarks

The database includes no head-to-head benchmark entries between the AMD Ryzen Embedded 9900X3D and the Intel Core Ultra 5 250K Plus, and no benchmark scores for the AMD part. Therefore, the only measurable performance data comes from the Intel processor’s recorded tests. The Intel Core Ultra 5 250K Plus achieves a Cinebench R23 multicore score of 30867, which is its highest rendering result, and a singlecore score of 2261. The R20 multicore score of 18442 and the R15 multicore score of 4640 show scaling across test versions. In Passmark tests, the multithread score of 51596 and the single thread score of 4757 indicate a balanced profile. The data compression score of 568721 is the highest absolute number in the Passmark suite, while the find prime numbers score of 486 is the lowest, suggesting that the Intel part excels at memory-heavy and arithmetic operations but is less optimized for prime-number search algorithms. The nearest rivals in the database for the Intel part include the AMD EPYC 4465P with an average score of 66925 and a delta of -0.1%, the Intel Xeon 6515P with an average score of 67006 and a delta of -0.2%, the Intel Core Ultra 9 275HX with an average score of 67469 and a delta of -0.9%, and the Intel Core Ultra 5 250KF Plus with an average score of 66159 and a delta of 1.1%. These deltas show that the Intel Core Ultra 5 250K Plus sits within 1% of its closest rivals, slightly behind the EPYC 4465P, Xeon 6515P, and Core Ultra 9 275HX, while slightly ahead of the Core Ultra 5 250KF Plus. The AMD Ryzen Embedded 9900X3D has no rival data, so a comparative benchmark walkthrough is impossible. The Intel part’s Cinebench R23 singlecore score of 2261 and Passmark single thread score of 4757 confirm that its single-thread performance is competitive, while its 18-core configuration drives the multicore results. The absence of AMD data means that any claims about the AMD part’s performance would be speculative, and the analysis must strictly note that the Intel part is the only processor with recorded wins.

Specification Differences

The two processors differ across several key specification fields. The AMD Ryzen Embedded 9900X3D has 12 cores and 24 threads, while the Intel Core Ultra 5 250K Plus has 18 cores and 18 threads. Base clocks are 4.40 GHz for the AMD part and 4.20 GHz for the Intel part, a 0.20 GHz difference. Boost clocks are 5.50 GHz and 5.30 GHz, respectively. TDP values are 120 W for the AMD part and 125 W for the Intel part, a 5 W difference. Sockets differ: AMD Socket AM5 versus Intel Socket 1851. The process node is 4 nm for the AMD part and 3 nm for the Intel part, with transistor counts of 16,630 million and 17,800 million, respectively. Die sizes are 2x 70.6 mm² for the AMD part and 243 mm² for the Intel part. Cache per core differs: L1 is 80 KB per core for the AMD part and 192 KB per core for the Intel part; L2 is 1 MB per core for the AMD part and 3 MB per core for the Intel part; L3 is 128 MB for the AMD part and 30 MB shared for the Intel part. Memory bandwidth is 89.6 GB/s for the AMD part and 115.2 GB/s for the Intel part. PCIe lanes are 24 for the AMD part and 20 for the Intel part, both Gen 5. Integrated graphics are Radeon Graphics for the AMD part and Arc Xe-LPG Graphics 64EU for the Intel part. Release dates are 2025-10-06 for the AMD part and 2026-03-10 for the Intel part. The Intel part has a launch MSRP of $199, while the AMD part has no recorded launch MSRP. Both have unlocked multipliers, both support DDR5 and ECC memory, and both have dual-channel memory buses. The AMD part’s part number is 100-000001368E, while the Intel part’s part number is SA4UZ.