AMD Ryzen Embedded 9900X3D vs Intel Core Ultra 7 155UL Comparison

Where Each One Wins

The recorded data shows no benchmark wins for either processor in the head-to-head comparison. Both the AMD Ryzen Embedded 9900X3D and the Intel Core Ultra 7 155UL record zero wins in the measured benchmark suite, and the average benchmark score for both parts is zero. The percentile ranking against all CPUs in the database is identical at 50 for both processors.

This absence of measured wins does not mean the two chips are equivalent in capability. The benchmark data is empty, so the performance comparison must be derived from the architectural and specification differences in the database. The AMD part is positioned for high-throughput workloads with 24 threads and a 128 MB L3 cache, while the Intel part is configured for efficiency with a 15 watt TDP and 14 threads. The data indicates two very different design targets rather than two competing parts with similar characteristics.

Architecture Differences

The AMD Ryzen Embedded 9900X3D belongs to the 9000 series and uses the Granite Ridge codename with Zen 5 architecture. It is built on a 4 nm process at TSMC with 16,630 million transistors and a die size of 2x 70.6 mm². The Intel Core Ultra 7 155UL belongs to the Core Ultra Series 1 and uses the Meteor Lake codename with Meteor Lake-PS architecture. It is built on a 7 nm process at Intel. The process node difference is substantial: 4 nm versus 7 nm, which indicates the AMD part uses a more advanced manufacturing process.

Core organization differs significantly. The AMD processor provides 12 cores and 24 threads, meaning every core supports two threads. The Intel processor provides 12 cores and 14 threads, indicating a hybrid arrangement where only some cores support multi-threading. The Intel part likely uses a mix of performance and efficiency cores, though the database does not specify the exact core composition.

Cache hierarchies diverge sharply. The AMD part offers 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 128 MB of L3 cache. The Intel part offers 112 KB of L1 cache per core, 2 MB of L2 cache per core, and only 12 MB of shared L3 cache. The AMD processor has more than ten times the L3 cache capacity. This 128 MB L3 cache is the defining feature of the 3D V-Cache product line, and it directly benefits workloads that repeatedly access large datasets.

Memory and I/O capabilities also differ. Both processors support DDR5 memory with dual-channel buses and identical 89.6 GB/s memory bandwidth. The AMD part supports ECC memory, while the Intel part does not. The AMD processor provides PCIe Gen 5 with 24 lanes from the CPU, while the Intel processor provides PCIe Gen 4 with 8 lanes from the CPU. The AMD part offers three times the PCIe lane count and a newer PCIe generation.

Integrated graphics differ as well. The AMD part includes Radeon Graphics, while the Intel part includes Arc Xe-LPG 64EU. The database does not provide performance figures for either integrated GPU, so no direct comparison is possible from the recorded data.

The AMD processor has an unlocked multiplier, while the Intel processor is locked. The AMD part uses AMD Socket AM5, and the Intel part uses Intel Socket 1851. The AMD processor was released on 2025-10-06, while the Intel processor was released on 2024-04-07. The AMD part carries part number 100-000001368E, and the Intel part carries part number SRN97.

Clock speeds show a wide gap. The AMD processor has a base clock of 4.40 GHz and a boost clock of 5.50 GHz. The Intel processor has a base clock of 1.70 GHz and a boost clock of 4.80 GHz. The AMD part runs at a much higher base frequency, which directly translates to higher sustained throughput in multi-threaded workloads.

Power envelopes are radically different. The AMD processor has a 120 watt TDP, while the Intel processor has a 15 watt TDP. This eightfold difference in thermal design power indicates the AMD part is designed for performance-dense embedded systems with adequate cooling, while the Intel part targets power-constrained deployments.

Head-to-Head Benchmarks

The head-to-head benchmark array is empty in the database. No measured scores exist for either processor in any workload category. The average benchmark score for both parts is zero, and the nearest rival data is absent for both. This means no direct numerical comparison can be made from recorded benchmark results.

What the data does permit is a specification-based projection. The AMD processor has a 4.40 GHz base clock versus 1.70 GHz for the Intel part, a 5.50 GHz boost clock versus 4.80 GHz, and 24 threads versus 14 threads. In any workload that scales with thread count and clock speed, the AMD part holds a structural advantage. The 128 MB L3 cache versus 12 MB further widens the gap for cache-sensitive workloads.

The Intel part counters with a much lower 15 watt TDP. For deployments where power draw and heat dissipation are the primary constraints, the Intel processor is the only viable option between the two. The database shows no benchmark results that would quantify the performance per watt trade-off, so the comparison remains qualitative on that axis.

The Intel processor does have a higher L1 cache per core at 112 KB versus 80 KB, and a higher L2 cache per core at 2 MB versus 1 MB. These smaller cache levels favor the Intel part for workloads with high per-core working sets that fit in L1 or L2. However, the AMD part's 128 MB L3 cache dwarfs the Intel part's 12 MB shared L3, which matters more for large dataset workloads.

PCIe connectivity strongly favors the AMD part: 24 lanes of Gen 5 versus 8 lanes of Gen 4. Systems requiring multiple high-bandwidth expansion devices, GPUs, or NVMe storage will be limited by the Intel part's lane count and generation. The AMD part also supports ECC memory, which matters for reliability-sensitive embedded applications.

FAQ

Q: Which processor has more threads?

A: The AMD Ryzen Embedded 9900X3D has 24 threads from 12 cores. The Intel Core Ultra 7 155UL has 14 threads from 12 cores.

Q: What is the L3 cache difference between the two processors?

A: The AMD processor has 128 MB of L3 cache. The Intel processor has 12 MB of shared L3 cache.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 9900X3D supports ECC memory. The Intel Core Ultra 7 155UL does not.

Q: What are the TDP values for each processor?

A: The AMD processor has a 120 watt TDP. The Intel processor has a 15 watt TDP.

Q: Which processor has a higher boost clock?

A: The AMD processor boosts to 5.50 GHz. The Intel processor boosts to 4.80 GHz.

Q: What PCIe generations and lane counts does each processor provide?

A: The AMD processor provides PCIe Gen 5 with 24 lanes from the CPU. The Intel processor provides PCIe Gen 4 with 8 lanes from the CPU.

Specification Differences

The two processors differ on nearly every measurable specification in the database.

Clock speeds: AMD base clock is 4.40 GHz, Intel base clock is 1.70 GHz. AMD boost clock is 5.50 GHz, Intel boost clock is 4.80 GHz.

Thread count: AMD provides 24 threads, Intel provides 14 threads. Both have 12 cores.

TDP: AMD is 120 watts, Intel is 15 watts.

Process node: AMD uses 4 nm at TSMC, Intel uses 7 nm at Intel.

Transistors: AMD has 16,630 million, Intel has no recorded transistor count.

Die size: AMD is 2x 70.6 mm², Intel has no recorded die size.

Cache: AMD L1 is 80 KB per core, Intel L1 is 112 KB per core. AMD L2 is 1 MB per core, Intel L2 is 2 MB per core. AMD L3 is 128 MB, Intel L3 is 12 MB shared.

Memory: AMD supports DDR5 with ECC, Intel supports DDR5 dependent on motherboard without ECC. Both use dual-channel buses with 89.6 GB/s bandwidth.

PCIe: AMD provides Gen 5 with 24 lanes, Intel provides Gen 4 with 8 lanes.

Integrated graphics: AMD uses Radeon Graphics, Intel uses Arc Xe-LPG 64EU.

Socket: AMD uses AMD Socket AM5, Intel uses Intel Socket 1851.

Multiplier: AMD is unlocked, Intel is locked.

Codename: AMD is Granite Ridge, Intel is Meteor Lake-PS.

Architecture: AMD uses Zen 5, Intel uses Meteor Lake.

Release date: AMD released 2025-10-06, Intel released 2024-04-07.

Part number: AMD is 100-000001368E, Intel is SRN97.

The Intel processor has a launch MSRP of $426. The AMD processor has no recorded launch MSRP in the database.

The Verdict

The data describes two processors built for different deployment scenarios. The AMD Ryzen Embedded 9900X3D delivers high clock speeds, 24 threads, 128 MB of L3 cache, ECC memory support, PCIe Gen 5 with 24 lanes, and an unlocked multiplier. It targets workloads that demand raw throughput: compute-heavy embedded applications, large in-memory datasets, and systems requiring high-bandwidth expansion. The 120 watt TDP indicates a chassis with serious cooling.

The Intel Core Ultra 7 155UL targets power-sensitive systems. Its 15 watt TDP is the defining specification. It offers fewer threads, a much lower base clock, a smaller L3 cache, no ECC support, and fewer PCIe lanes. Its advantages are limited to higher per-core L1 and L2 caches, a lower power envelope, and an integrated Arc Xe-LPG 64EU GPU. The launch MSRP of $426 applies to the Intel part.

For applications where performance and cache capacity decide the outcome, the AMD processor is the clear choice from the recorded specifications. For applications where power draw and heat output are hard constraints, the Intel processor is the only option that fits. The empty benchmark data means no measured performance comparison exists in the database, so the verdict rests on architectural and specification analysis alone.