AMD EPYC 7203P vs AMD Ryzen 5 PRO 5655G Comparison

The AMD EPYC 7203P and AMD Ryzen 5 PRO 5655G are both Zen 3 processors from AMD, but they serve entirely different market segments. The EPYC 7203P is a server/workstation part built for the SP3 platform, while the Ryzen 5 PRO 5655G is a desktop processor with integrated graphics. Benchmark data shows the EPYC 7203P wins 11 of 17 head-to-head tests, but the Ryzen 5 PRO 5655G takes a decisive lead in single-threaded workloads and several math-oriented PassMark tests. This comparison breaks down where each processor excels based on recorded measurements.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7203P has 8 cores and 16 threads. The AMD Ryzen 5 PRO 5655G has 6 cores and 12 threads. The EPYC offers two additional cores and four additional threads.

Q: What is the difference in boost clock speeds?

A: The Ryzen 5 PRO 5655G boosts to 4.40 GHz, which is higher than the EPYC 7203P's 3.40 GHz boost. The base clocks also differ: the Ryzen runs at 3.90 GHz base, while the EPYC runs at 2.80 GHz base.

Q: Which processor has the larger L3 cache?

A: The EPYC 7203P has 64 MB of shared L3 cache. The Ryzen 5 PRO 5655G has 16 MB of L3 cache. The EPYC's cache is four times larger.

Q: Do both processors support ECC memory?

A: Yes, both the AMD EPYC 7203P and the AMD Ryzen 5 PRO 5655G support ECC memory. However, the memory buses differ: the EPYC uses eight-channel DDR4 with 204.8 GB/s bandwidth, while the Ryzen uses dual-channel DDR4 with 51.2 GB/s bandwidth.

Q: Which processor includes integrated graphics?

A: Only the AMD Ryzen 5 PRO 5655G includes integrated graphics, specifically the Radeon Vega 7. The EPYC 7203P has no integrated graphics.

Q: How do the processors compare in single-thread performance?

A: The Ryzen 5 PRO 5655G wins in single-thread tests. In PassMark single-thread, it scores 3241 versus the EPYC's 2537, a 21.7% advantage. The Ryzen also wins in Cinebench R15, R20, and R23 single-core tests, though the margins are smaller.

Architecture Differences

Both processors are built on TSMC's 7 nm process node and use the Zen 3 architecture, but the similarities end there. The EPYC 7203P belongs to the EPYC 7003 series with the codename Milan, while the Ryzen 5 PRO 5655G is from the 5000 series with the codename Cezanne. The EPYC is designed for server and workstation workloads, and the Ryzen is a desktop part.

The transistor counts differ significantly. The Ryzen 5 PRO 5655G contains 10,700 million transistors on a single 180 mm² die. The EPYC 7203P contains 8,300 million transistors spread across two 81 mm² dies, totaling 162 mm² of silicon. This dual-die design is a hallmark of server processors, allowing for higher memory bandwidth and more PCIe lanes.

Memory architecture is the most dramatic difference. The EPYC 7203P supports eight-channel DDR4 memory with a peak bandwidth of 204.8 GB/s. The Ryzen 5 PRO 5655G uses dual-channel DDR4 with 51.2 GB/s bandwidth. That is a 4x difference in theoretical memory throughput, which matters for data-intensive server workloads.

PCIe connectivity also separates the two. The EPYC 7203P provides Gen 4 with 128 lanes from the CPU alone. The Ryzen 5 PRO 5655G provides Gen 3 with 16 lanes. The EPYC offers eight times the lane count and a newer PCIe generation, making it suitable for large-scale storage arrays, multiple GPUs, and high-speed networking.

The sockets are incompatible. The EPYC 7203P uses AMD Socket SP3, while the Ryzen 5 PRO 5655G uses AMD Socket AM4. This means platform choice determines which processor can be used, and the two cannot be swapped between systems.

Power requirements differ substantially. The EPYC 7203P has a TDP of 120 watts, while the Ryzen 5 PRO 5655G has a TDP of 65 watts. The Ryzen draws less power, which aligns with its desktop orientation and lower memory bandwidth requirements.

Both processors share the same L1 cache at 64 KB per core and L2 cache at 512 KB per core. The L3 cache is where they diverge: the EPYC has 64 MB shared, and the Ryzen has 16 MB. The larger L3 cache on the EPYC helps with server workloads that revisit large datasets.

The Ryzen 5 PRO 5655G includes the Radeon Vega 7 integrated graphics, which the EPYC lacks entirely. This makes the Ryzen a viable option for systems without a discrete GPU. The EPYC requires a separate graphics adapter.

Where Each One Wins

The EPYC 7203P dominates in multi-threaded and server-oriented workloads. It wins all six Cinebench tests, covering R15, R20, and R23 in both multi-core and single-core variants. The margins are consistent at 8.5% across the board. In PassMark, the EPYC wins multithread by 15.1%, random string sorting by 34.1%, data encryption by 14.3%, physics by 202.8%, and find prime numbers by 195.9%. These results point to strengths in parallel processing, encryption tasks, and physics simulations.

The Ryzen 5 PRO 5655G wins in single-thread performance and specific math workloads. Its PassMark single-thread score is 3241 versus 2537 for the EPYC, a 21.7% advantage. It also leads in floating point math by 4.1%, integer math by 0.7%, data compression by 0.5%, and extended instructions by 19.4%. The extended instructions win is notable, suggesting the Ryzen handles advanced instruction sets more efficiently despite its lower core count.

For desktop use, the Ryzen 5 PRO 5655G has clear advantages. Its higher clock speeds, integrated graphics, and lower TDP make it suitable for everyday computing, light gaming, and productivity tasks. The EPYC 7203P is built for servers where memory bandwidth, PCIe lanes, and multi-threaded throughput matter more than single-thread speed.

Specification Differences

The two processors differ in several key specifications:

• Cores: EPYC 7203P has 8, Ryzen 5 PRO 5655G has 6
• Threads: EPYC 7203P has 16, Ryzen 5 PRO 5655G has 12
• Base clock: EPYC 7203P at 2.80 GHz, Ryzen 5 PRO 5655G at 3.90 GHz
• Boost clock: EPYC 7203P at 3.40 GHz, Ryzen 5 PRO 5655G at 4.40 GHz
• TDP: EPYC 7203P at 120 watts, Ryzen 5 PRO 5655G at 65 watts
• Socket: EPYC 7203P on SP3, Ryzen 5 PRO 5655G on AM4
• Codename: EPYC 7203P is Milan, Ryzen 5 PRO 5655G is Cezanne
• Transistors: EPYC 7203P at 8,300 million, Ryzen 5 PRO 5655G at 10,700 million
• Die size: EPYC 7203P at 2x 81 mm², Ryzen 5 PRO 5655G at 180 mm²
• L3 cache: EPYC 7203P at 64 MB, Ryzen 5 PRO 5655G at 16 MB
• Memory bus: EPYC 7203P eight-channel, Ryzen 5 PRO 5655G dual-channel
• Memory bandwidth: EPYC 7203P at 204.8 GB/s, Ryzen 5 PRO 5655G at 51.2 GB/s
• PCIe: EPYC 7203P Gen 4 with 128 lanes, Ryzen 5 PRO 5655G Gen 3 with 16 lanes
• Integrated graphics: EPYC 7203P none, Ryzen 5 PRO 5655G Radeon Vega 7
• Release date: EPYC 7203P in September 2023, Ryzen 5 PRO 5655G in May 2024

Both processors use DDR4 memory, support ECC, are unlocked multipliers, and are built on 7 nm TSMC process technology. Both have 64 KB L1 cache and 512 KB L2 cache per core.

Head-to-Head Benchmarks

The EPYC 7203P wins the Cinebench suite decisively. In Cinebench R15 multi-core, the EPYC scores 1886 against the Ryzen's 1738, an 8.5% lead. The single-core R15 test shows 266 versus 245, also an 8.6% lead. R20 multi-core results are 7859 versus 7244, an 8.5% margin. R20 single-core shows 1109 versus 1022, again 8.5%. R23 multi-core has the EPYC at 18714 and the Ryzen at 17249, an 8.5% gap. R23 single-core shows 2642 versus 2435, an 8.5% lead. These consistent margins indicate the EPYC's extra two cores and larger cache provide a steady advantage in render workloads.

The PassMark suite tells a mixed story. The EPYC wins multithread with 22017 versus 19129, a 15.1% margin. Random string sorting goes to the EPYC at 33873 versus 25253, a 34.1% lead. Data encryption favors the EPYC at 17434 versus 15253, a 14.3% advantage. The physics test is a blowout: the EPYC scores 2077 versus the Ryzen's 686, a 202.8% lead. Find prime numbers follows a similar pattern: 145 versus 49, a 195.9% margin.

The Ryzen 5 PRO 5655G wins the single-thread PassMark test with 3241 versus 2537, a 21.7% advantage. Extended instructions go to the Ryzen at 17944 versus 14466, a 19.4% lead. Floating point math favors the Ryzen at 38649 versus 37049, a 4.1% margin. Integer math is close: 67561 versus 67083 for the Ryzen, a 0.7% lead. Data compression also goes to the Ryzen at 255608 versus 254215, a 0.5% margin.

The win count stands at 11 for the EPYC and 6 for the Ryzen. However, the quality of the wins matters. The EPYC's largest margins come in physics and prime number calculations, which reflect its multi-threaded server heritage. The Ryzen's largest margin is in single-thread performance, which is critical for many desktop applications.

The Verdict

The data supports a clear division of roles. The AMD EPYC 7203P is the choice for server and workstation deployments where multi-threaded throughput, memory bandwidth, and PCIe expansion are paramount. Its eight-channel memory interface delivers 204.8 GB/s of bandwidth, and its 128 PCIe Gen 4 lanes allow for extensive hardware connectivity. The EPYC wins all Cinebench tests and dominates in PassMark physics, prime number calculations, and random string sorting. These are workloads that scale with cores, cache, and memory parallelism.

The AMD Ryzen 5 PRO 5655G is the choice for desktop systems where single-thread speed and integrated graphics matter. Its 4.40 GHz boost clock drives a 21.7% lead in PassMark single-thread performance. The Radeon Vega 7 integrated graphics eliminates the need for a discrete GPU in basic systems. The lower 65 watt TDP makes it suitable for compact and energy-conscious builds. The Ryzen also wins in extended instructions, floating point math, and integer math, indicating strong performance in general-purpose desktop tasks.

Users who need massive memory bandwidth or plan to populate many PCIe devices should select the EPYC 7203P. Users who prioritize responsive single-threaded applications, want integrated graphics, or operate within a 65 watt power envelope should select the Ryzen 5 PRO 5655G. The EPYC is not a desktop replacement, and the Ryzen cannot match the EPYC's server capabilities. The benchmark results confirm that these processors are optimized for different environments, and the correct choice depends entirely on the workload.