AMD EPYC 9654P vs AMD Ryzen 5 PRO 6650H Comparison

The AMD EPYC 9654P and the AMD Ryzen 5 PRO 6650H represent two extremes of AMD’s product stack: a 96-core server behemoth built for maximum throughput against a 6-core mobile chip designed for efficiency. Benchmark data shows a complete sweep for the EPYC part in every head-to-head test, yet the two processors are far closer in overall average performance than their core counts suggest, due to the way the database aggregates scores across different workloads. The data indicates that the EPYC 9654P is the definitive choice for multi-threaded server workloads, while the Ryzen 5 PRO 6650H is positioned for mobile systems where the EPYC’s physical and power requirements are simply not viable.

The Verdict

From the benchmark results, the EPYC 9654P is the clear winner for any application that can utilize its massive thread count. It dominates the Ryzen 5 PRO 6650H in every single head-to-head benchmark, with margins ranging from a modest 14.2% in Geekbench single-core to a staggering 934.1% in Cinebench R23 multi-core. The data shows that the EPYC 9654P is the only choice for server racks, virtualization hosts, or rendering farms where raw compute density is paramount. Conversely, the Ryzen 5 PRO 6650H is the only choice for laptops or compact mobile workstations, as the EPYC 9654P is a 360-watt, Socket SP5 server part with no integrated graphics. The Ryzen 5 PRO 6650H, with its 45-watt TDP, integrated Radeon 660M graphics, and mobile FP7 socket, is designed for a completely different physical and thermal envelope. The verdict is not about which is "better" but which fits the intended use case, and the data firmly places the EPYC in the data center and the Ryzen 5 PRO in the field.

Architecture Differences

The two processors are built on fundamentally different architectures and process nodes. The EPYC 9654P uses the Zen 4 architecture, codenamed Genoa, fabricated on a 5 nm process at TSMC. It packs 96 cores and 192 threads across 12 chiplets, each with a die size of 72 mm², totaling 78,840 million transistors. In contrast, the Ryzen 5 PRO 6650H uses the Zen 3+ architecture, codenamed Rembrandt, on a 6 nm process at TSMC, with a single 208 mm² die and just 6 cores and 12 threads. The cache hierarchy also differs substantially: the EPYC provides 64 KB of L1 and 1 MB of L2 per core, plus a massive 384 MB of shared L3 cache. The Ryzen 5 PRO offers the same 64 KB of L1 per core but halves the L2 to 512 KB per core, and its L3 is only 16 MB shared. Memory support is a major divider, with the EPYC featuring twelve-channel DDR5 memory and a bandwidth of 460.8 GB/s, while the Ryzen 5 PRO uses dual-channel DDR5 with a bandwidth of 76.8 GB/s. The EPYC also supports ECC memory, which the Ryzen 5 PRO does not, and offers 128 PCIe Gen 5 lanes compared to the Ryzen 5 PRO’s 20 PCIe Gen 4 lanes. The Ryzen 5 PRO compensates with an integrated Radeon 660M GPU, a feature entirely absent from the EPYC.

Head-to-Head Benchmarks

The head-to-head data is a one-sided affair, with the EPYC 9654P winning all six recorded tests. The largest victory comes in Cinebench R23 multi-core, where the EPYC scores 98,875 against the Ryzen 5 PRO’s 9,561, a delta of 934.1%. This result is expected given the 16-fold core advantage, and it highlights the EPYC’s dominance in fully parallel rendering workloads. Similarly, in Cinebench R15 multi-core, the EPYC’s 9,966 score is 543% ahead of the Ryzen 5 PRO’s 1,550. The single-core Cinebench results are also lopsided but for a different reason: the EPYC scores 13,958 in R23 single-core versus 1,471, an 848.9% delta, and 1,406 versus 236 in R15, a 495.8% delta. These single-core margins are surprisingly large, suggesting the EPYC’s Zen 4 architecture and higher sustained power delivery in a server socket provide a significant per-thread advantage over the mobile Zen 3+ part. Geekbench results show a narrower gap: in multi-core, the EPYC’s 22,141 is 219.5% above the Ryzen 5 PRO’s 6,930, and in single-core, the EPYC’s 1,981 is only 14.2% ahead of the Ryzen 5 PRO’s 1,735. The single-core Geekbench result is the closest contest in the entire dataset, indicating that for lightly threaded mobile tasks, the Ryzen 5 PRO’s higher boost clock of 4.50 GHz can nearly match the EPYC’s 3.70 GHz boost. Overall, the EPYC wins all six tests, with an average delta that reflects its total dominance in multi-threaded and even most single-threaded scenarios.

Specification Differences

The specification sheet reveals stark contrasts between the two processors. The EPYC 9654P features 96 cores and 192 threads, while the Ryzen 5 PRO 6650H has 6 cores and 12 threads. Base clocks differ, with the EPYC at 2.40 GHz and the Ryzen 5 PRO at 3.30 GHz, but the boost clocks reverse the trend: the EPYC reaches 3.70 GHz, while the Ryzen 5 PRO boosts to 4.50 GHz. The TDP is a massive divider: the EPYC draws 360 watts, whereas the Ryzen 5 PRO is rated at 45 watts. Socket types are incompatible, with the EPYC using AMD Socket SP5 and the Ryzen 5 PRO using AMD Socket FP7. The process node favors the EPYC at 5 nm versus 6 nm for the Ryzen 5 PRO. Cache configurations differ, with the EPYC providing 1 MB of L2 per core and 384 MB of L3, while the Ryzen 5 PRO has 512 KB of L2 per core and 16 MB of L3. Memory channels are twelve for the EPYC versus dual for the Ryzen 5 PRO, and the corresponding bandwidth figures are 460.8 GB/s versus 76.8 GB/s. The EPYC supports ECC memory; the Ryzen 5 PRO does not. PCIe lanes are 128 Gen 5 for the EPYC and 20 Gen 4 for the Ryzen 5 PRO. The Ryzen 5 PRO includes integrated Radeon 660M graphics, while the EPYC has none. The market segments are Server/Workstation versus Mobile, and the release dates are 2022-11-09 for the EPYC and 2022-04-18 for the Ryzen 5 PRO. The EPYC has a launch MSRP of $10625, while the Ryzen 5 PRO has no recorded launch MSRP.

FAQ

Q: Which processor has more cores?

A: The AMD EPYC 9654P has 96 cores and 192 threads, while the AMD Ryzen 5 PRO 6650H has 6 cores and 12 threads.

Q: How much faster is the EPYC in multi-core rendering?

A: In Cinebench R23 multi-core, the EPYC 9654P scores 98,875 versus the Ryzen 5 PRO’s 9,561, which is a delta of 934.1%.

Q: Is the Ryzen 5 PRO competitive in single-core performance?

A: In Geekbench single-core, the Ryzen 5 PRO 6650H scores 1,735, which is only 14.2% behind the EPYC 9654P’s 1,981. However, in Cinebench R23 single-core, the EPYC is 848.9% ahead.

Q: What are the memory bandwidth differences?

A: The EPYC 9654P supports twelve-channel DDR5 memory with a bandwidth of 460.8 GB/s, while the Ryzen 5 PRO 6650H supports dual-channel DDR5 with a bandwidth of 76.8 GB/s.

Q: Does the Ryzen 5 PRO have integrated graphics?

A: Yes, the Ryzen 5 PRO 6650H includes a Radeon 660M integrated GPU. The EPYC 9654P has no integrated graphics.

Q: Which processor has ECC memory support?

A: The EPYC 9654P supports ECC memory, while the Ryzen 5 PRO 6650H does not.

Where Each One Wins

The EPYC 9654P wins across the board in raw performance benchmarks, making it the superior choice for server-side workloads. Its 934.1% lead in Cinebench R23 multi-core and 543% lead in Cinebench R15 multi-core make it ideal for 3D rendering, video encoding, and scientific simulations that scale across many cores. The 219.5% advantage in Geekbench multi-core further supports its use in virtualization and database servers where thread count is king. The twelve-channel memory bus and 460.8 GB/s bandwidth are decisive for memory-bandwidth-intensive tasks like large-scale data analytics, while the 128 PCIe Gen 5 lanes enable high-speed networking and storage arrays. The EPYC also wins in single-core Cinebench tests, suggesting that even for lightly threaded server processes, its architecture and power headroom deliver superior per-thread performance.

The Ryzen 5 PRO 6650H wins in the context of deployment, not performance. Its 45-watt TDP and mobile FP7 socket make it the only viable option for laptops and thin-and-light workstations. The integrated Radeon 660M GPU provides a complete system solution without a discrete graphics card, a feature the EPYC lacks entirely. While its boost clock of 4.50 GHz is higher than the EPYC’s 3.70 GHz, this does not translate to benchmark wins; the closest it comes is a 14.2% deficit in Geekbench single-core. The Ryzen 5 PRO’s dual-channel memory and 20 PCIe Gen 4 lanes are sufficient for mobile productivity tasks, but its 16 MB of L3 cache and 6 cores limit it to mainstream workloads like office applications, web browsing, and light code compilation. The PassMark data available only for the Ryzen 5 PRO shows strengths in integer math (62,838) and floating-point math (35,743), which are respectable for a mobile chip but cannot be compared to the EPYC since those tests were not run on the server part. In summary, the EPYC 9654P wins every benchmark and is the clear choice for data center compute, while the Ryzen 5 PRO 6650H wins on mobility and integrated functionality, making it the default for portable systems.