AMD EPYC 9734 vs AMD Ryzen Threadripper 9980X Comparison

The AMD Ryzen Threadripper 9980X and AMD EPYC 9734 are both 99th-percentile CPUs, but they serve opposite ends of the compute spectrum. The Threadripper 9980X wins 14 of 17 head-to-head benchmarks, including every Cinebench test, with a 50.1% margin in each. Its average benchmark score is 321,753, which is 3.6% higher than the EPYC 9734's 310,619. The verdict is clear: the Threadripper 9980X is the superior choice for latency-sensitive, high-frequency desktop and workstation workloads, while the EPYC 9734 is the pick for massive parallel throughput in server environments where its 112 cores and twelve-channel memory bandwidth matter more than raw clock speed. The data shows the Threadripper for creators and prosumers; the EPYC for data center scale-out.

The Verdict

The benchmark data is unambiguous. The AMD Ryzen Threadripper 9980X beats the AMD EPYC 9734 in 14 of 17 tests, and the wins are not marginal. In every Cinebench R15, R20, and R23 test—both single-core and multi-core—the Threadripper 9980X leads by a consistent 50.1%. That is not a slight edge; it is a generational gap. The Threadripper's single-thread PassMark score of 4,537 versus the EPYC's 2,310 represents a 96.4% advantage, meaning the Threadripper delivers nearly double the per-thread performance. For anyone running applications that depend on single-core responsiveness—code compilation, CAD, simulation pre-processing—the Threadripper 9980X is the only rational choice.

However, the EPYC 9734 does not lose everywhere. It wins the PassMark data encryption test (179,390 vs. 157,137, a 12.4% lead), the find prime numbers test (829 vs. 769, a 7.2% lead), and random string sorting (357,638 vs. 292,083, an 18.3% lead). These are specific workloads that exploit its 112 cores and 224 threads. The EPYC also offers a twelve-channel memory bus with 460.8 GB/s of bandwidth, versus the Threadripper's quad-channel 204.8 GB/s. If the workload is memory-bandwidth-bound and scales across many cores—think large in-memory databases or scientific computing—the EPYC's architecture is better suited. The verdict: pick the Threadripper 9980X for maximum per-core speed and workstation-class responsiveness; pick the EPYC 9734 for dense, multi-threaded server workloads that demand memory throughput and core count.

Architecture Differences

The two chips are built on different process nodes and microarchitectures. The Threadripper 9980X uses TSMC's 4 nm process with Zen 5 architecture, codenamed Shimada Peak. The EPYC 9734 uses TSMC's 5 nm process with Zen 4c architecture, codenamed Bergamo. The Threadripper packs 64 cores and 128 threads, while the EPYC doubles the core count to 112 cores and 224 threads. The transistor counts are close—66,520 million for the Threadripper and 71,000 million for the EPYC—but the die layout differs: the Threadripper uses 8x 70.6 mm² chiplets, while the EPYC uses 8x 73 mm² chiplets.

Clock speeds tell the performance story. The Threadripper 9980X has a base clock of 3.20 GHz and boosts to 5.40 GHz. The EPYC 9734 has a base clock of 2.20 GHz and a boost of just 3.00 GHz. That 2.4 GHz boost advantage on the Threadripper explains its dominant single-thread results. The EPYC compensates with 48 additional cores and a significantly wider memory bus. The Threadripper supports DDR5 memory over a quad-channel bus, while the EPYC supports DDR5 over a twelve-channel bus. Both support ECC memory, but the EPYC's total memory bandwidth of 460.8 GB/s is more than double the Threadripper's 204.8 GB/s.

Cache configurations are similar but not identical. Both have 64 KB of L1 cache per core and 1 MB of L2 per core. The Threadripper has 256 MB of L3 cache, while the EPYC has 256 MB of shared L3 cache. PCIe connectivity differs: the Threadripper offers Gen 5 with 80 lanes (CPU only), while the EPYC offers Gen 5 with 128 lanes (CPU only). The EPYC is a server part with a locked multiplier, while the Threadripper has an unlocked multiplier for overclocking. The Threadripper targets the desktop market, whereas the EPYC is a server/workstation part. The release dates also differ—the Threadripper launched on 2025-07-29, while the EPYC launched on 2023-06-12.

FAQ

Q: Which CPU has higher single-core performance?

A: The Threadripper 9980X dominates. Its PassMark single-thread score is 4,537 versus the EPYC's 2,310, a 96.4% advantage. In Cinebench R23 single-core, the Threadripper scores 18,427 compared to the EPYC's 12,274, a 50.1% lead.

Q: Does the EPYC 9734 ever outperform the Threadripper 9980X?

A: Yes, in three specific workloads. The EPYC wins data encryption (179,390 vs. 157,137, a 12.4% lead), find prime numbers (829 vs. 769, a 7.2% lead), and random string sorting (357,638 vs. 292,083, an 18.3% lead). These victories come from its 112 cores and 224 threads, not its clock speed.

Q: Which processor is better for multi-threaded rendering?

A: The Threadripper 9980X is far ahead. In Cinebench R23 multi-core, it scores 130,529 versus the EPYC's 86,943, a 50.1% margin. The PassMark multithread score is 141,641 for the Threadripper versus 102,286 for the EPYC, a 38.5% lead.

Q: How do the memory systems compare?

A: The EPYC 9734 has a twelve-channel memory bus with 460.8 GB/s bandwidth, while the Threadripper 9980X has a quad-channel bus with 204.8 GB/s. Both support DDR5 and ECC memory. The EPYC's memory bandwidth is more than double, which matters for large-scale server workloads.

Q: What are the core and thread counts?

A: The Threadripper 9980X has 64 cores and 128 threads. The EPYC 9734 has 112 cores and 224 threads. Despite having 48 fewer cores, the Threadripper wins most benchmarks due to its higher clocks and newer Zen 5 architecture.

Q: Which CPU has a higher launch MSRP?

A: The EPYC 9734 has a launch MSRP of $9600. The Threadripper 9980X has a launch MSRP of $4999.

Specification Differences

The two processors differ across nearly every major specification. The Threadripper 9980X uses the AMD Socket sTR5, while the EPYC 9734 uses the AMD Socket SP5. The Threadripper is built on a 4 nm process with Zen 5 architecture (Shimada Peak), while the EPYC uses a 5 nm process with Zen 4c architecture (Bergamo). Core counts differ: 64 cores and 128 threads for the Threadripper versus 112 cores and 224 threads for the EPYC.

Clock speeds are drastically different. The Threadripper has a base clock of 3.20 GHz and a boost of 5.40 GHz. The EPYC has a base clock of 2.20 GHz and a boost of 3.00 GHz. TDP is similar—350 W for the Threadripper and 340 W for the EPYC—but thermal management differs due to the socket and core layout. The Threadripper's die size is 8x 70.6 mm², while the EPYC's is 8x 73 mm². Transistor counts are 66,520 million for the Threadripper and 71,000 million for the EPYC.

Memory configuration is a key differentiator. The Threadripper supports quad-channel DDR5 with 204.8 GB/s bandwidth. The EPYC supports twelve-channel DDR5 with 460.8 GB/s bandwidth. PCIe lanes also differ: the Threadripper has 80 Gen 5 lanes (CPU only), while the EPYC has 128 Gen 5 lanes (CPU only). The Threadripper has an unlocked multiplier; the EPYC is locked. The Threadripper is a desktop part, while the EPYC is a server/workstation part. Release dates are 2025-07-29 for the Threadripper and 2023-06-12 for the EPYC.

Head-to-Head Benchmarks

The Cinebench suite is a total sweep for the Threadripper 9980X. In R15 multi-core, it scores 13,157 versus the EPYC's 8,763, a 50.1% lead. The same margin appears in R15 single-core (1,857 vs. 1,237). R20 multi-core shows 54,822 versus 36,516, and R20 single-core shows 7,739 versus 5,155. R23 multi-core is 130,529 versus 86,943, and R23 single-core is 18,427 versus 12,274. Every Cinebench test shows the identical 50.1% delta, indicating a consistent architectural advantage in both single-threaded and multi-threaded rendering workloads.

PassMark tests show a more nuanced picture. The Threadripper wins data compression (2,974,534 vs. 2,900,008, a 2.6% lead), extended instructions (228,959 vs. 205,925, an 11.2% lead), floating point math (559,003 vs. 549,045, a 1.8% lead), integer math (872,071 vs. 823,150, a 5.9% lead), multithread (141,641 vs. 102,286, a 38.5% lead), physics (8,001 vs. 6,747, an 18.6% lead), and single-thread (4,537 vs. 2,310, a 96.4% lead). The single-thread result is the largest margin in the entire comparison, reinforcing the Threadripper's massive clock speed advantage.

The EPYC 9734 takes three PassMark tests. Data encryption is its best win: 179,390 versus 157,137, a 12.4% lead. Random string sorting shows an 18.3% advantage (357,638 vs. 292,083). Find prime numbers is closer, with the EPYC scoring 829 versus the Threadripper's 769, a 7.2% lead. These wins share a pattern: they are highly parallel workloads that scale well across the EPYC's 112 cores. The EPYC's twelve-channel memory bandwidth likely contributes to the sorting and encryption results, where large data sets must move through memory quickly.

The overall benchmark average tells the final story. The Threadripper 9980X averages 321,753 across all tests, while the EPYC 9734 averages 310,619. The Threadripper's nearest rival is the AMD Ryzen Threadripper PRO 9985WX, which scores 320,749 (a 0.3% difference). The EPYC 9734's nearest rival is the AMD EPYC 9575F at 311,774 (a -0.4% difference). Both CPUs sit in the 99th percentile of all CPUs, but the Threadripper's higher average score and 14-to-3 win record make it the stronger overall performer in this matchup.