AMD EPYC 7551 vs AMD Ryzen Threadripper 1950X Comparison

The benchmark data is unambiguous: the AMD Ryzen Threadripper 1950X defeats the AMD EPYC 7551 in every single head-to-head test recorded, despite the EPYC packing twice the core count. Across all six Cinebench comparisons, the Threadripper maintains a consistent lead of roughly 5.7% to 5.8%, making it the outright performance winner in this matchup. The EPYC 7551, by contrast, records zero wins in the head-to-head dataset, underscoring that its design priorities lie elsewhere—specifically in platform capabilities rather than raw application speed.

Head-to-Head Benchmarks

The Threadripper 1950X’s victory is sweeping but narrow in percentage terms. In Cinebench R15 multi-core, the Threadripper scores 2362 against the EPYC’s 2227, a 5.7% advantage. The single-core R15 result follows the same pattern: 333 versus 314, again a 5.7% delta. Moving to Cinebench R20, the multi-core gap remains at 5.7% (9844 vs. 9280), while the single-core test shows a slightly larger 5.8% difference (1389 vs. 1309). The most recent workload, Cinebench R23, continues the trend: multi-core 23440 vs. 22096 (5.7% delta) and single-core 3309 vs. 3119 (5.7% delta). The consistency of these deltas is striking—it suggests a fixed architectural advantage for the Threadripper rather than workload-specific variability.

The fact that the Threadripper wins with 16 cores against the EPYC’s 32 cores is the headline result. The EPYC 7551’s base clock is 2000 MHz with a 3.00 GHz boost, while the Threadripper runs at 3400 MHz base and 4000 MHz boost. That clock-speed advantage—roughly 70% higher base and 33% higher boost—more than compensates for the EPYC’s doubled core count in these tests. Both chips share the same Zen architecture and 14 nm process node, so the difference comes down to frequency and memory configuration, not microarchitecture.

Another point worth noting: the Threadripper’s absolute scores are higher, but the EPYC’s average benchmark score across all tests is 6391, slightly above the Threadripper’s 6231. This discrepancy arises because the EPYC’s benchmark suite includes additional Cinebench runs, while the Threadripper’s dataset also includes Geekbench scores (7989 multi-core, 1183 single-core) that pull its average down. In the direct head-to-head, however, the Threadripper wins every contest.

The Verdict

The data supports a clear conclusion: choose the AMD Ryzen Threadripper 1950X if your priority is maximum performance in Cinebench workloads, whether single-threaded or multi-threaded. It wins all six head-to-head tests with a consistent 5.7–5.8% margin. The EPYC 7551 cannot claim a single benchmark victory in this comparison, making it the inferior choice for raw compute speed.

However, the verdict flips when you consider platform-level features. The EPYC 7551 supports eight-channel DDR4 memory with 170.6 GB/s bandwidth, compared to the Threadripper’s quad-channel 85.3 GB/s. The EPYC also supports ECC memory, while the Threadripper does not. For server or workstation deployments where memory capacity, bandwidth, and data integrity are critical, the EPYC’s 32 cores and 64 threads provide a foundation that the Threadripper’s 16 cores and 32 threads cannot match, even if the Threadripper is faster in these specific benchmarks.

The Threadripper’s launch MSRP is $999, a figure that appears once here for reference. The EPYC 7551 has no launch MSRP listed in the data. Both chips share a 180 W TDP, both are unlocked, and both are currently marked as Active production parts. The Threadripper targets the Desktop segment, while the EPYC is classified as Server/Workstation—a distinction that aligns perfectly with their respective benchmark and feature profiles.

Where Each One Wins

The Threadripper 1950X wins in every measured performance metric in this head-to-head, so it is the default pick for anyone running Cinebench R15, R20, or R23—whether single-core or multi-core. Its 4000 MHz boost clock and 3400 MHz base clock deliver a consistent edge that no core-count advantage can overcome in these tests. The Threadripper also benefits from a 2x 213 mm² die configuration (totaling 9600 million transistors), which doubles the transistor count of the EPYC’s single 213 mm² die (4800 million transistors) and likely contributes to its higher frequency capability.

The EPYC 7551 wins on platform capability, not on benchmark scores. Its eight-channel memory bus provides double the bandwidth of the Threadripper’s quad-channel setup (170.6 vs. 85.3 GB/s), and its ECC memory support makes it suitable for error-sensitive workloads. The EPYC’s 32 cores and 64 threads are double the Threadripper’s counts, which would matter in heavily parallel server workloads that scale beyond the Cinebench tests recorded here. The EPYC also uses the AMD Socket SP3, while the Threadripper uses AMD Socket SP3r2, indicating different platform ecosystems despite the similar naming.

FAQ

Q: Which CPU wins in Cinebench R23 multi-core?

A: The AMD Ryzen Threadripper 1950X wins with a score of 23440, compared to the AMD EPYC 7551’s 22096, a 5.7% delta.

Q: Does the EPYC 7551 win any head-to-head benchmark?

A: No. The head-to-head dataset records zero wins for the EPYC 7551; the Threadripper 1950X wins all six tests.

Q: How do the core counts compare?

A: The EPYC 7551 has 32 cores and 64 threads, exactly double the Threadripper 1950X’s 16 cores and 32 threads.

Q: What is the memory bandwidth difference?

A: The EPYC 7551 offers 170.6 GB/s via an eight-channel DDR4 bus, while the Threadripper 1950X offers 85.3 GB/s via a quad-channel bus—exactly half.

Q: Do both processors support ECC memory?

A: No. The EPYC 7551 supports ECC memory; the Threadripper 1950X does not.

Q: Are both CPUs from the same architecture generation?

A: Yes, both use the Zen architecture on a 14 nm process from GlobalFoundries, but the EPYC is codenamed Naples while the Threadripper is codenamed Zen (Whitehaven).

Architecture Differences

Both processors are built on the same 14 nm Zen architecture from GlobalFoundries, but their physical implementations differ significantly. The EPYC 7551 uses a single 213 mm² die containing 4800 million transistors, while the Threadripper 1950X uses two 213 mm² dies for a total of 9600 million transistors. This dual-die design likely explains the Threadripper’s higher clock speeds—3400 MHz base and 4000 MHz boost versus the EPYC’s 2000 MHz base and 3.00 GHz boost—as the EPYC’s single die is configured for server efficiency rather than frequency.

Cache configurations also diverge. The EPYC 7551 has 64 MB of shared L3 cache, while the Threadripper 1950X has 32 MB. Both share identical L1 (96 KB per core) and L2 (512 KB per core) caches. The EPYC’s larger L3 pool aligns with its server role, providing more on-die data for 32 cores to access. The Threadripper’s smaller L3 is paired with fewer cores, but its higher clocks still yield superior Cinebench results.

The sockets differ: the EPYC uses AMD Socket SP3, and the Threadripper uses AMD Socket SP3r2. This means they are not interchangeable in the same motherboard. The EPYC targets the Server/Workstation market segment, while the Threadripper is a Desktop part, reinforcing their divergent platform philosophies. The Threadripper’s generation is listed as Ryzen Threadripper (Zen (Whitehaven)), while the EPYC is EPYC (Zen (Naples)), both releasing in 2017 within about six weeks of each other.

Specification Differences

The most critical specification gap is core and thread count: the EPYC 7551 doubles the Threadripper’s 16 cores and 32 threads, offering 32 cores and 64 threads. Clock speeds are where the Threadripper counters: its base clock of 3.40 GHz and boost clock of 4.00 GHz vastly exceed the EPYC’s 2000 MHz base and 3.00 GHz boost. Both processors share a TDP of 180 W, but the EPYC’s lower clocks at the same power draw suggest it is designed for sustained server loads rather than burst performance.

Memory support is another clear differentiator. The EPYC 7551 uses eight-channel DDR4 with 170.6 GB/s bandwidth and ECC support, while the Threadripper 1950X uses quad-channel DDR4 with 85.3 GB/s bandwidth and no ECC. The EPYC’s memory bandwidth is exactly double, which is critical for server workloads but does not translate to Cinebench wins. PCIe support is listed as Gen 3 for the EPYC, while the Threadripper’s PCIe field is null in the data.

The process nodes are identical (14 nm), but die size and transistor counts differ: the EPYC is 213 mm² with 4800 million transistors, while the Threadripper is 2x 213 mm² with 9600 million transistors. The Threadripper’s launch MSRP is $999, while the EPYC has no listed launch MSRP. Both have unlocked multipliers and are in Active production status. The EPYC’s part number is PS7551BDVIHAF, while the Threadripper’s is YD195XA8UGAAE, confirming they are distinct SKUs with different platform requirements.