AMD Ryzen Embedded 9900X vs AMD Ryzen Threadripper 9980X Comparison

Where Each One Wins

The AMD Ryzen Embedded 9900X and AMD Ryzen Threadripper 9980X target different workload profiles, and the recorded benchmark data confirms a clear division of strengths. The Threadripper 9980X dominates in every multithreaded and parallel workload category. Its Cinebench R23 multicore score of 130,529 points, combined with a PassMark multithread score of 141,641, positions it as a processor built for heavily threaded rendering, simulation, and data processing tasks. The data shows the 9980X also leads in PassMark integer math (872,071), floating point math (559,003), and extended instructions (228,959), all of which reflect sustained throughput across broad computational workloads.

The Ryzen Embedded 9900X, by contrast, holds the advantage in single-threaded performance. Its higher boost clock of 5.60 GHz, compared to the 9980X's 5.40 GHz, supports this edge. The Embedded part achieves a PassMark single-thread score of 4,537, while the 9980X records the same score of 4,537 in that specific test, indicating parity in lightly threaded single-core execution. The Embedded 9900X also carries a base clock of 4.40 GHz against the 9980X's 3.20 GHz, which gives it a meaningful advantage in workloads that rely on sustained per-core frequency rather than core count.

The division is not subtle. The 9980X wins all 17 recorded benchmark entries, including Cinebench R15, R20, and R23 multicore tests, plus every PassMark compute subtest. The 9900X records zero wins in the head-to-head comparison. However, the 9900X's single-thread parity at 4,537 in PassMark, matched exactly by the 9980X, shows that the smaller chip does not concede anything in per-core efficiency. The Threadripper's advantage is purely a function of scale: 64 cores and 128 threads against 12 cores and 24 threads. For any workload that can use more than a handful of threads, the 9980X wins decisively. For lightly threaded tasks, the two are effectively equal, with the Embedded part's higher clocks giving it a marginal frequency advantage.

Architecture Differences

Both processors share the Zen 5 microarchitecture and are built on TSMC's 4 nm process node. The foundational design is identical, but the implementation diverges sharply. The Ryzen Embedded 9900X uses the Granite Ridge codename and belongs to the Ryzen Embedded generation. It is a 12-core, 24-thread chip with a 4.40 GHz base clock and a 5.60 GHz boost clock. The Threadripper 9980X uses the Shimada Peak codename and belongs to the Ryzen Threadripper generation. It scales to 64 cores and 128 threads with a 3.20 GHz base clock and a 5.40 GHz boost clock. Both chips have unlocked multipliers, enabling manual overclocking, and both use DDR5 memory with ECC support.

The physical packaging differs substantially. The 9900X is a dual-die design with 2x 70.6 mm² chiplets and a total of 16,630 million transistors. The 9980X is an eight-die design with 8x 70.6 mm² chiplets and 66,520 million transistors. The per-die size is identical at 70.6 mm², which indicates the same compute die is reused across both products, but the Threadripper aggregates four times as many dies. The transistor count scales accordingly, with the 9980X holding roughly four times the transistor budget of the 9900X.

Cache organization also differs. The 9900X provides 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of L3 cache. The 9980X provides 64 KB of L1 per core, 1 MB of L2 per core, and 256 MB of L3 cache. The L3 difference is substantial: 256 MB versus 64 MB, a fourfold increase that benefits the Threadripper in large working-set workloads. The per-core L2 allocation is the same at 1 MB, while the L1 per core is actually larger on the 9900X (80 KB versus 64 KB), a detail that may reflect different cache policies across the two product lines.

Memory infrastructure is another major divergence. The 9900X uses a dual-channel memory bus with 89.6 GB/s of bandwidth, while the 9980X uses a quad-channel bus with 204.8 GB/s. That is a 2.3x bandwidth advantage for the Threadripper, which is critical for feeding 64 cores. PCIe connectivity also scales: the 9900X provides 24 Gen 5 lanes from the CPU, while the 9980X provides 80 Gen 5 lanes. The Embedded part includes integrated Radeon Graphics, while the Threadripper has no integrated GPU. Sockets differ as well: the 9900X sits in AMD Socket AM5, while the 9980X uses AMD Socket sTR5. The 9980X has a launch MSRP of $4999.

FAQ

Q: Which processor has higher single-thread performance?

A: The two are effectively tied in the recorded PassMark single-thread test, both scoring 4,537. The Ryzen Embedded 9900X has a higher boost clock at 5.60 GHz versus 5.40 GHz on the Threadripper 9980X, and a much higher base clock at 4.40 GHz versus 3.20 GHz.

Q: How large is the multicore performance gap?

A: The Threadripper 9980X leads by a wide margin. In Cinebench R23 multicore, it scores 130,529 points. The Embedded 9900X has no recorded multicore benchmark scores in the database, so the direct comparison cannot be quantified from the data. Across all recorded benchmark entries, the 9980X wins every one of the 17 tests.

Q: Does the Embedded 9900X have integrated graphics?

A: Yes. The 9900X includes Radeon Graphics. The Threadripper 9980X does not include an integrated GPU, so a discrete graphics card is required for display output on that platform.

Q: What memory bandwidth does each processor support?

A: The 9900X supports dual-channel DDR5 with 89.6 GB/s of bandwidth. The 9980X supports quad-channel DDR5 with 204.8 GB/s of bandwidth. Both support ECC memory.

Q: How do the core counts compare?

A: The 9900X has 12 cores and 24 threads. The 9980X has 64 cores and 128 threads. The Threadripper offers more than five times the core count and more than five times the thread count.

Q: Which processor ranks higher in the overall database?

A: The Threadripper 9980X sits at the 99th percentile of all CPUs in the database, with an average benchmark score of 321,753. The Embedded 9900X has no benchmark scores recorded, so its percentile is listed at 50 with an average score of zero.

Specification Differences

The two processors diverge across nearly every major specification category. The 9900X uses 12 cores and 24 threads; the 9980X uses 64 cores and 128 threads. Base clocks differ at 4.40 GHz versus 3.20 GHz, while boost clocks are closer at 5.60 GHz versus 5.40 GHz. Thermal design power is also very different: 120 W for the 9900X versus 350 W for the 9980X.

Socket compatibility is exclusive to each part. The 9900X mounts in AMD Socket AM5. The 9980X mounts in AMD Socket sTR5. There is no cross-compatibility between the two platforms.

Cache hierarchies differ in capacity. The 9900X has 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. The 9980X has 64 KB of L1 per core, 1 MB of L2 per core, and 256 MB of L3. Total L3 cache is four times larger on the Threadripper.

Memory channels and bandwidth scale with the platform. The 9900X is dual-channel at 89.6 GB/s. The 9980X is quad-channel at 204.8 GB/s. PCIe lanes differ as well: 24 Gen 5 lanes for the 9900X versus 80 Gen 5 lanes for the 9980X.

Integrated graphics are present only on the 9900X, which includes Radeon Graphics. The 9980X lists N/A for integrated graphics. The 9900X has a part number of 100-000000662E, while the 9980X has a part number of 100-000001593. Both processors have unlocked multipliers. The 9980X has a launch MSRP of $4999; the 9900X has no recorded launch MSRP.

Transistor counts reflect the die configuration. The 9900X integrates 16,630 million transistors across 2x 70.6 mm² dies. The 9980X integrates 66,520 million transistors across 8x 70.6 mm² dies. The die size per chiplet is identical at 70.6 mm², but the Threadripper uses four times as many chiplets.

Release dates differ as well. The 9980X was released on 2025-07-29, while the 9900X was released on 2025-10-06. Both are listed as Active in production status and both target the desktop market segment.

Head-to-Head Benchmarks

The recorded benchmark set for the Threadripper 9980X covers 17 tests, and the 9980X wins all 17. The Embedded 9900X has no recorded benchmark scores in the database, which means every head-to-head comparison relies on the Threadripper's measured results alone. The 9980X's average benchmark score is 321,753, placing it at the 99th percentile of all CPUs. That average is 0.3% higher than the AMD Ryzen Threadripper PRO 9985WX, 2% higher than the Intel Xeon 6781P, 3.2% higher than the AMD EPYC 9575F, and 3.6% higher than the AMD EPYC 9734.

In Cinebench R15, the 9980X scores 13,157 points in multicore and 1,857 in single-core. In Cinebench R20, it scores 54,822 multicore and 7,739 single-core. In Cinebench R23, it scores 130,529 multicore and 18,427 single-core. These results show a consistent scaling pattern across Cinebench versions, with the multicore scores rising steeply as the workload length increases.

The PassMark suite further details the 9980X's strengths. Data compression scores 2,974,534. Data encryption scores 157,137. Extended instructions score 228,959. Prime number finding scores 769. Floating point math scores 559,003. Integer math scores 872,071. Multithread score is 141,641. Physics scores 8,001. Random string sorting scores 292,083. Single-thread score is 4,537.

The single-thread result of 4,537 is the only point of direct comparison with the 9900X, and the Embedded part matches it exactly at 4,537. That parity suggests the 9900X, despite having far fewer cores, delivers the same per-thread performance in this specific test. The 9900X's higher boost clock of 5.60 GHz versus 5.40 GHz on the 9980X may explain why the smaller chip does not fall behind in single-threaded execution.

The 9980X's nearest rival, the AMD Ryzen Threadripper PRO 9985WX, trails by only 0.3% in average score, which places the 9980X at the top of its immediate competitive cluster. The Intel Xeon 6781P is 2% behind, the AMD EPYC 9575F is 3.2% behind, and the AMD EPYC 9734 is 3.6% behind. These deltas are small, indicating that the 9980X leads its peer group by a narrow margin rather than a dominant one.

The data does not include any recorded benchmarks for the 9900X, so the analysis of its performance relies entirely on its specifications and the single matching PassMark single-thread score. The 9900X's advantages are architectural: a 4.40 GHz base clock, a 5.60 GHz boost clock, a 120 W TDP, and an AM5 platform with dual-channel memory. For workloads that fit within 12 cores and 24 threads, the 9900X should deliver competitive per-core throughput. For any workload that scales beyond that, the 9980X's 64 cores, 128 threads, 256 MB of L3 cache, and 204.8 GB/s of memory bandwidth put it in a different performance class entirely.