AMD EPYC 9634 vs AMD Ryzen Threadripper 9980X Comparison

The AMD Ryzen Threadripper 9980X and the AMD EPYC 9634 occupy overlapping high-core-count territory, but the recorded data shows they are built for different jobs. Both sit in the 99th percentile versus all CPUs in the database, yet the Threadripper wins 15 of 17 head-to-head benchmarks while the EPYC takes 2, and the margin in most rendering and compute tests is substantial. The Threadripper is a Zen 5 desktop workstation part with 64 cores and high clocks; the EPYC 9634 is a Zen 4 server processor with 84 cores, lower clocks, and a much wider memory and I/O fabric. The launch MSRP figures recorded in the database are $4999 for the Threadripper 9980X and $10304 for the EPYC 9634.

Head-to-Head Benchmarks

The Cinebench suite produces the starkest and most consistent gap in this matchup. The Threadripper 9980X scores 13157 in Cinebench R15 multi-core against 9248 for the EPYC 9634, a 42.3 percent advantage. The same 42.3 percent margin repeats across every Cinebench test in the database: R20 multi-core (54822 vs 38535), R23 multi-core (130529 vs 91752), and even the single-core runs, where the Threadripper posts 1857, 7739, and 18427 in R15, R20, and R23 respectively against 1305, 5440, and 12953 for the EPYC. That single-core gap is the direct consequence of clock speed: the Threadripper boosts to 5.40 GHz while the EPYC tops out at 3.70 GHz.

Passmark results tell a more varied story. The Threadripper dominates extended instructions, 228959 versus 137543, a 66.5 percent lead that reflects the compute throughput of its higher-clocked cores. Floating point math goes the same way, 559003 versus 353784, a 58 percent win. Single-thread performance is similarly lopsided: 4537 versus 2924, a 55.2 percent advantage. Data compression favors the Threadripper by 33 percent (2974534 versus 2236412), multi-thread by 31.2 percent (141641 versus 107944), integer math by 20.2 percent (872071 versus 725356), and string sorting by 11.9 percent (292083 versus 261134). Data encryption is nearly a tie, with the Threadripper ahead by just 3.4 percent (157137 versus 151943).

The EPYC 9634 does win two tests, and they are instructive. Passmark physics goes to the EPYC 12291 to 8001, a 34.9 percent margin, and find prime numbers goes to the EPYC 1176 to 769, a 34.6 percent margin. Both of these tests reward sustained throughput across many threads and, in the case of prime searching, integer work that scales with raw core count, where the EPYC's 84 cores and 168 threads outweigh the Threadripper's 64 cores and 128 threads despite the clock deficit.

Context from the rivals list reinforces how strong the Threadripper's overall profile is. Its average benchmark score of 321753 sits within 0.3 percent of the AMD Ryzen Threadripper PRO 9985WX (320749), 2 percent ahead of the Intel Xeon 6781P (315524), 3.2 percent ahead of the AMD EPYC 9575F (311774), and 3.6 percent ahead of the AMD EPYC 9734 (310619). The EPYC 9634's average of 244274 places it 2.5 percent above the Intel Xeon 6747P (238263), 2.9 percent behind the Intel Xeon 6980P (251516), 8.5 percent behind the AMD EPYC 9684X (266914), and 12.1 percent ahead of the AMD EPYC 9455P (217854).

The Verdict

For a workstation, the data overwhelmingly favors the Threadripper 9980X. It wins every rendering benchmark by 42.3 percent, every single-thread test by more than 55 percent, and the majority of compute tests by double-digit margins. Anyone running DCC applications, CAD, simulation, or code compilation on a desktop platform should pick it based on these numbers alone. Its unlocked multiplier also allows tuning, a feature the EPYC 9634 lacks.

The EPYC 9634 is not trying to win workstation benchmarks. It belongs in the server segment, and the database shows why: twelve-channel DDR5 with 460.8 GB/s of bandwidth versus the Threadripper's quad-channel 204.8 GB/s, 128 PCIe Gen 5 lanes versus 80, and 384 MB of shared L3 cache versus 256 MB. Its 290 W TDP is also lower than the Threadripper's 350 W. Workloads that saturate memory bandwidth or need dense I/O, and the two Passmark wins in physics and prime number computation, define its territory.

Architecture Differences

The two processors come from different generations of AMD's server and workstation lineups. The Threadripper 9980X uses the Zen 5 architecture, codenamed Shimada Peak within the Threadripper 9000 series, built on TSMC's 4 nm process with 66,520 million transistors across 8 dies of 70.6 mm² each. The EPYC 9634 uses Zen 4, codenamed Genoa, from the EPYC 9004 series, built on TSMC's 5 nm process with 78,840 million transistors across 12 dies of 72 mm² each.

Core and thread counts favor the EPYC: 84 cores and 168 threads against 64 cores and 128 threads. Clock speeds favor the Threadripper heavily, with a 3.20 GHz base and 5.40 GHz boost against the EPYC's 2.25 GHz base and 3.70 GHz boost. Per-core cache is identical at 64 KB of L1 and 1 MB of L2, but total L3 differs: the EPYC carries 384 MB shared while the Threadripper carries 256 MB.

Platform characteristics diverge sharply. The Threadripper uses Socket sTR5 with quad-channel DDR5 at 204.8 GB/s and 80 PCIe Gen 5 lanes from the CPU. The EPYC uses Socket SP5 with twelve-channel DDR5 at 460.8 GB/s and 128 PCIe Gen 5 lanes. Both support ECC memory and DDR5, and neither lists integrated graphics. The Threadripper is a desktop-segment part with an unlocked multiplier (part number 100-000001593, released 2025-07-29); the EPYC is a server/workstation part with a locked multiplier (part number 100-100000797, released 2022-11-09). Both remain in active production.

FAQ

Q: Which CPU is faster in rendering?

A: The Threadripper 9980X, by a wide and uniform margin. It leads every Cinebench test by 42.3 percent, including R23 multi-core at 130529 versus 91752.

Q: Does the EPYC 9634 win anything?

A: Yes, two tests. It wins Passmark physics 12291 to 8001 (34.9 percent) and Passmark find prime numbers 1176 to 769 (34.6 percent), both reflecting its higher core and thread count of 84 cores and 168 threads.

Q: How do their memory platforms compare?

A: Both support DDR5 with ECC. The Threadripper offers quad-channel bandwidth of 204.8 GB/s; the EPYC offers twelve-channel bandwidth of 460.8 GB/s, more than double.

Q: Which has more PCIe lanes?

A: The EPYC 9634, with 128 Gen 5 lanes from the CPU versus 80 Gen 5 lanes on the Threadripper 9980X.

Q: Which architecture and process node does each use?

A: The Threadripper 9980X is Zen 5 (Shimada Peak) on a 4 nm TSMC process; the EPYC 9634 is Zen 4 (Genoa) on a 5 nm TSMC process.

Q: Can either CPU be overclocked?

A: The Threadripper 9980X has an unlocked multiplier. The EPYC 9634 does not.

Where Each One Wins

The Threadripper 9980X is the clear pick for rendering and content creation. A 42.3 percent lead across the entire Cinebench suite, from R15 through R23 and in both single-core and multi-core modes, makes it the stronger choice for 3D rendering, video work, and any application sensitive to per-core speed. Its 55.2 percent single-thread advantage (4537 versus 2924 in Passmark) matters for applications that do not scale across dozens of cores, and its 58 percent floating point and 66.5 percent extended instruction leads cover scientific and vectorized workloads running on a desktop platform. Compilation, encoding, compression (33 percent ahead), and general multi-threaded desktop work (31.2 percent ahead in Passmark multi-thread) all fall in its column. Its closest rival by average score is the Threadripper PRO 9985WX at just 0.3 percent, meaning it competes at the very top of the workstation class.

The EPYC 9634 wins where core count, memory bandwidth, and I/O density dominate. Its 84 cores and 168 threads deliver the two head-to-head victories in physics simulation and prime number computation, and its 460.8 GB/s twelve-channel memory subsystem dwarfs the Threadripper's 204.8 GB/s for bandwidth-hungry server workloads such as virtualization, databases, and in-memory analytics. With 128 PCIe Gen 5 lanes, it supports far more NVMe storage and network devices than the Threadripper's 80 lanes, and its 384 MB of shared L3 cache benefits large working sets spanning many cores. It also fits the SP5 server socket with a 290 W TDP, below the Threadripper's 350 W, and its competitive set (Xeon 6747P, Xeon 6980P, EPYC 9684X, EPYC 9455P) confirms it is positioned as a server processor rather than a workstation rival.

In short: the data shows the Threadripper 9980X winning the performance benchmarks that workstation users run, while the EPYC 9634 wins the platform characteristics that server deployments need. Choose the Threadripper for speed on the desktop; choose the EPYC for cores, bandwidth, and lanes in the rack.