AMD EPYC 9015 vs AMD Ryzen 9 9900X Comparison

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD EPYC 9015 posts an average benchmark score of 57,555, while the AMD Ryzen 9 9900X scores 57,498. The EPYC leads by a razor-thin 0.1% margin, placing both at the 92nd percentile among all CPUs.

Q: How do the two chips compare in multi-threaded performance?

A: The Ryzen 9 9900X wins the PassMark multi-thread test decisively, scoring 54,643 versus the EPYC's 30,689. That is a 43.8% advantage for the desktop part, despite the EPYC being a server processor.

Q: Is there any benchmark where the EPYC 9015 comes out ahead?

A: No. Across all 11 head-to-head benchmark comparisons, the Ryzen 9 9900X wins every single test. The closest margin is in PassMark physics, where the Ryzen leads by 14.4%, while the largest gap is in extended instructions at 49.4%.

Q: What are the core and thread counts for each processor?

A: The EPYC 9015 has 8 cores and 16 threads. The Ryzen 9 9900X has 12 cores and 24 threads. The Ryzen thus offers 50% more cores and threads than the EPYC.

Q: Do both processors use the same manufacturing process?

A: Yes. Both the EPYC 9015 (Turin) and the Ryzen 9 9900X (Granite Ridge) are built on TSMC's 4 nm process node, with identical transistor counts of 16,630 million and the same die size of 2x 70.6 mm².

Q: What memory configurations do the two support?

A: The EPYC 9015 supports twelve-channel DDR5 memory with a bandwidth of 576.0 GB/s. The Ryzen 9 9900X supports dual-channel DDR5 with a bandwidth of 89.6 GB/s. Both support ECC memory.

Architecture Differences

Both processors share the same Zen 5 architecture, but they are tailored for drastically different environments. The EPYC 9015 is part of the EPYC 9005 series, codenamed Turin, and is built for the AMD Socket SP5 server platform. The Ryzen 9 9900X belongs to the 9000 series, codenamed Granite Ridge, and uses the consumer AMD Socket AM5. Both are manufactured on TSMC's 4 nm process with identical transistor counts and die sizes, but the similarities end there.

The EPYC 9015 is fundamentally a server part. Its 8 cores and 16 threads are connected to a twelve-channel memory bus, delivering 576.0 GB/s of memory bandwidth—more than six times the Ryzen's 89.6 GB/s. It also provides 128 PCIe Gen 5 lanes from the CPU alone, compared to the Ryzen's 24 lanes. The EPYC has no integrated graphics, while the Ryzen includes Radeon Graphics. The EPYC's cache structure is listed as 80 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3, matching the Ryzen's cache layout exactly.

The Ryzen 9 9900X, by contrast, is a desktop processor with 12 cores and 24 threads. It runs at a base clock of 4.40 GHz and boosts to 5.60 GHz, whereas the EPYC is rated at 3.60 GHz base and 4.10 GHz boost. The Ryzen has a lower TDP of 120 watts versus the EPYC's 125 watts, and it is multiplier-unlocked, allowing overclocking, while the EPYC is locked. The Ryzen was released on 2024-08-14, with the EPYC following on 2024-10-09.

The market positioning is stark: the EPYC is a server/workstation chip with massive memory throughput and PCIe connectivity, while the Ryzen is a desktop chip with higher clock speeds and more cores for general-purpose and gaming workloads. Both share the same Zen 5 core design, but the surrounding platform differentiates them profoundly.

Where Each One Wins

The data is unambiguous: the Ryzen 9 9900X wins every single head-to-head benchmark. There is no workload category in the PassMark suite where the EPYC 9015 manages to take a victory. The Ryzen's wins span data compression, encryption, extended instructions, prime number finding, floating-point math, integer math, multi-threading, physics, random string sorting, and single-threaded performance.

That said, the EPYC 9015 is not without its strengths, though they are not reflected in these specific benchmark scores. The EPYC's twelve-channel memory bus and 576.0 GB/s bandwidth make it suited for memory-bandwidth-intensive server workloads, and its 128 PCIe Gen 5 lanes allow for far more expansion than the Ryzen's 24 lanes. The EPYC also has ECC memory support, as does the Ryzen, but the server platform is designed for reliability and scalability.

For single-threaded tasks, the Ryzen's higher boost clock of 5.60 GHz versus 4.10 GHz gives it a clear edge, reflected in the 30.1% lead in PassMark single-thread scores. For multi-threaded workloads, the Ryzen's 12 cores and 24 threads outperform the EPYC's 8 cores and 16 threads by 43.8% in the multi-thread test. The Ryzen also wins in physics by 14.4%, a smaller margin that suggests the EPYC's architecture is not far behind in that specific test.

In practical terms, the Ryzen 9 9900X is the winner for any workload that can leverage its higher clocks and additional cores. The EPYC 9015 would only be chosen for its platform features—memory bandwidth, PCIe lanes, and server-grade reliability—not for raw PassMark performance.

Specification Differences

The two processors differ in nearly every specification that matters for performance classification. The EPYC 9015 has 8 cores and 16 threads, while the Ryzen 9 9900X has 12 cores and 24 threads. The EPYC's base clock is 3.60 GHz and boost clock is 4.10 GHz; the Ryzen's are 4.40 GHz and 5.60 GHz, respectively. TDP is similar but not identical: 125 watts for the EPYC, 120 watts for the Ryzen.

The sockets are completely different—AMD Socket SP5 for the server part, AMD Socket AM5 for the desktop part. Memory support differs fundamentally: the EPYC uses twelve-channel DDR5 with 576.0 GB/s bandwidth, while the Ryzen uses dual-channel DDR5 with 89.6 GB/s. PCIe connectivity also diverges sharply: the EPYC offers 128 Gen 5 lanes, the Ryzen offers 24. The EPYC has no integrated graphics; the Ryzen includes Radeon Graphics.

Other differences include the multiplier: the EPYC is locked, while the Ryzen is unlocked for overclocking. The release dates are also distinct, with the Ryzen launching on 2024-08-14 and the EPYC on 2024-10-09. The EPYC's part number is 100-000001553, while the Ryzen's is 100-000000662. The launch MSRP is $527 for the EPYC and $499 for the Ryzen.

The cache specifications are identical: 80 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3 for both. The process node, foundry, transistor count, and die size are also the same. The essential differences come down to platform: server versus desktop, memory channels, PCIe lanes, and clock speeds.

Head-to-Head Benchmarks

The Ryzen 9 9900X dominates every head-to-head comparison, with the largest margins in compute-intensive workloads. The biggest gap is in PassMark extended instructions, where the Ryzen scores 55,243 versus the EPYC's 27,970, a 49.4% advantage. This test likely reflects the Ryzen's higher clock speeds and additional cores working in tandem.

Data compression shows a similar story: the Ryzen scores 683,579 against the EPYC's 353,014, a 48.4% lead. Floating-point math follows at 48.7% (120,083 versus 61,615), and integer math at 48.9% (181,056 versus 92,524). These are substantial, consistent gaps across all arithmetic-heavy tests.

Data encryption shows a 46.8% lead for the Ryzen (33,421 versus 17,790), and random string sorting a 44.8% lead (72,013 versus 39,772). The multi-thread test, which is often a key indicator of overall throughput, shows the Ryzen at 54,643 versus the EPYC's 30,689, a 43.8% margin. Single-thread performance is also clearly in the Ryzen's favor: 4,672 versus 3,265, a 30.1% lead.

The closest contest is in PassMark physics, where the Ryzen scores 3,381 and the EPYC scores 2,893, a 14.4% difference. Prime number finding shows a 30.3% gap (436 versus 304). Notably, the EPYC's average benchmark score of 57,555 is still slightly higher than the Ryzen's 57,498, but that is an artifact of the different benchmark suites each chip was tested with; the head-to-head PassMark comparisons all favor the Ryzen.

The Verdict

The data is unambiguous: the AMD Ryzen 9 9900X is the superior processor in every head-to-head benchmark, winning all 11 tests with margins ranging from 14.4% to 49.4%. For any user comparing these two on raw PassMark performance alone, the Ryzen 9 9900X is the clear choice. Its 12 cores, 24 threads, higher clock speeds, and lower TDP make it a more capable desktop processor across the board.

However, the EPYC 9015 is not a desktop chip, and its value proposition lies outside the PassMark suite. The server platform offers twelve-channel memory with 576.0 GB/s bandwidth, 128 PCIe Gen 5 lanes, and a socket designed for enterprise workloads. If the workload demands massive memory throughput or extensive PCIe expansion, the EPYC is the appropriate choice despite its benchmark losses.

For most users, particularly those building a desktop system, the Ryzen 9 9900X wins decisively. It is faster in every measured category, has more cores, higher clocks, and a lower launch MSRP of $499 versus $527. The EPYC 9015 should only be selected for server or workstation deployments where its platform features—not its PassMark scores—are the deciding factor. The benchmark results indicate that the Ryzen 9 9900X is the better processor in almost every conceivable consumer scenario.