AMD EPYC 4245P vs AMD Ryzen 9 270 Comparison

The AMD Ryzen 9 270 and AMD EPYC 4245P are two of the most closely matched CPUs in the database, and the recorded data shows a split verdict rather than a clean sweep. Both chips are built on TSMC's 4 nm process and support DDR5 memory over a dual-channel bus with 89.6 GB/s of bandwidth, yet they arrive at nearly identical performance from opposite directions: the Ryzen 9 270 is a mobile Hawk Point part with more cores and a lower power rating, while the EPYC 4245P is a server and workstation Grado part with fewer cores, a newer architecture, and higher clocks. Across the seventeen head-to-head benchmark results in the database, the EPYC 4245P takes eleven wins against six for the Ryzen 9 270, but the margin patterns tell a more interesting story than the raw win count.

Head-to-Head Benchmarks

The Cinebench suite belongs, narrowly, to the EPYC 4245P. The gap is small and remarkably consistent: in Cinebench R15 the EPYC scores 2682 multi-core and 378 single-core against 2664 and 376 for the Ryzen, roughly a half to one percent difference in every run. Cinebench R20 repeats the pattern at 11179 versus 11103 multi-core and 1577 versus 1567 single-core. Cinebench R23 closes the set at 26618 versus 26438 multi-core and 3757 versus 3732 single-core. In every Cinebench test the EPYC wins, and in every case the difference is under one percent. Statistically, the two chips render at the same level.

The Passmark suite is where the two diverge sharply. The EPYC 4245P dominates single-threaded throughput with a score of 4575 against 3784 for the Ryzen 9 270, a lead of about 17 percent, which is the largest gap anywhere in this comparison and reflects the EPYC's 5.40 GHz boost clock against the Ryzen's 5.20 GHz. Physics tells a similar story: the EPYC scores 2637 against 1365, nearly double the Ryzen's result. Find prime numbers is another landslide, with the EPYC at 193 versus 88 for the Ryzen. Passmark multithread also goes to the EPYC at 31063 versus 29089, about 6 percent ahead despite having two fewer cores, which indicates how much faster each individual EPYC thread is.

The Ryzen 9 270 answers convincingly in pure compute throughput tests. Data encryption is its biggest win: 20852 versus 18466, a 13 percent advantage. Random string sorting goes to the Ryzen at 42819 versus 39916, roughly 7 percent ahead. Floating point math (60122 versus 57965), data compression (351398 versus 339408), integer math (98266 versus 95120), and extended instructions (26729 versus 26547) all favor the Ryzen, mostly by 3 to 4 percent. These wins come from having 8 cores and 16 threads against 6 cores and 12 threads, and they cluster in workloads that scale across all available threads rather than rewarding peak per-thread speed.

Where Each One Wins

The use-case split is unusually clean. The EPYC 4245P is the pick for anything that depends on single-thread speed, snappy per-core response, or physics simulation: Passmark single-thread, physics, prime finding, and the overall multithreaded Passmark score all favor it. Applications that launch fast, branch heavily, and lean on one or two fast threads at a time will feel quicker on the EPYC. Its 4575 single-thread score against 3784 is the clearest evidence in the dataset.

The Ryzen 9 270 is the pick for sustained parallel number crunching where every thread contributes. Encryption, compression, sorting, integer math, and floating point math all land in its column, and its 16 threads versus 12 give it headroom in heavily threaded utility workloads. It achieves this at a 45 W TDP versus 65 W for the EPYC, which matters for thermally constrained mobile designs: the Ryzen delivers its parallel throughput inside a much lower power envelope.

Context against rivals reinforces how close these two are. The Ryzen 9 270 sits in the 87th percentile of all CPUs in the database with an average benchmark score of 40246, trading blows with the Intel Core i9-13905H (average score 40313, within a fraction of a percent), the Intel Xeon 6369P (40327), the Intel Core 5 221E (40144), and the AMD Ryzen 7 7700 (40081). The EPYC 4245P sits in the 86th percentile with an average score of 39215, effectively tied with the AMD Ryzen 7 PRO 8845HS (39325), the Intel Core i7-13700F (39009), the AMD Ryzen AI 7 450 (39485), and the AMD Ryzen 7 PRO 8840HS (39603). One percentile point apart, both chips occupy the same competitive neighborhood.

Architecture Differences

The two chips share a 4 nm TSMC node and DDR5 dual-channel memory support, and nearly everything else differs. The Ryzen 9 270 uses the Zen 4 architecture under the Hawk Point codename, with 8 cores, 16 threads, a 4.00 GHz base clock, a 5.20 GHz boost clock, and a 45 W TDP. It is a mobile-segment processor on AMD Socket FP8 with a much larger physical footprint: 25,000 million transistors on a 178 mm² die. Its cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. It includes Radeon 780M integrated graphics, PCIe Gen 4 with 20 CPU lanes, and no ECC memory support. The multiplier is locked.

The EPYC 4245P uses the newer Zen 5 architecture under the Grado codename, with 6 cores, 12 threads, a 3.90 GHz base clock, a 5.40 GHz boost clock, and a 65 W TDP. It targets the server and workstation segment on AMD Socket AM5, with a far smaller die of 70.6 mm² carrying 8,315 million transistors. Its per-core cache is deeper: 80 KB of L1 per core and 1 MB of L2 per core, plus a doubled 32 MB of shared L3. Server-oriented features include ECC memory support and PCIe Gen 5 with 24 CPU lanes, both absent or exceeded on the Ryzen. Its multiplier is also locked, and it ships with basic Radeon integrated graphics rather than the Ryzen's 780M-class iGPU. Both parts are active in production, and both support the same 89.6 GB/s memory bandwidth. The EPYC carries a launch MSRP of $239; the database lists no launch MSRP for the Ryzen 9 270.

The Verdict

Choose the EPYC 4245P for responsiveness-critical and platform-oriented builds. It wins the single-thread battle by about 17 percent, doubles the Ryzen's physics score, posts 193 versus 88 in prime finding, and wins every Cinebench test. It also brings ECC memory, PCIe Gen 5 with more lanes, and a doubled 32 MB L3 cache, which are meaningful advantages for workstation and entry-server duty. Its 11 of 17 head-to-head wins make it the stronger overall performer in the recorded data.

Choose the Ryzen 9 270 for parallel throughput per watt. It wins encryption by 13 percent, sorting by 7 percent, and floating point, integer, compression, and extended instruction tests by 3 to 4 percent each, all while drawing 45 W against the EPYC's 65 W. For mobile and thermally limited scenarios where all-core compute matters more than per-thread snappiness, it is the better fit, and its stronger Radeon 780M integrated graphics round out a mobile package the EPYC was never designed for.

FAQ

Q: Which CPU is faster in single-threaded workloads?

A: The EPYC 4245P, clearly. It scores 4575 in Passmark single-thread against 3784 for the Ryzen 9 270, roughly 17 percent ahead, helped by its 5.40 GHz boost clock versus 5.20 GHz.

Q: Which CPU wins more benchmarks overall?

A: The EPYC 4245P wins 11 of the 17 head-to-head tests, while the Ryzen 9 270 wins 6. However, the Ryzen's wins include some of the largest margins, such as a 13 percent lead in data encryption.

Q: Do the two chips differ in rendering performance?

A: Barely. The EPYC 4245P wins every Cinebench test, but by under one percent in each: R23 multi-core is 26618 versus 26438, and R23 single-core is 3757 versus 3732.

Q: Which CPU supports ECC memory?

A: Only the EPYC 4245P. The Ryzen 9 270 does not support ECC, which aligns with its mobile segment positioning versus the EPYC's server and workstation focus.

Q: Which is more power efficient?

A: The Ryzen 9 270 has a 45 W TDP against 65 W for the EPYC 4245P, and it still wins several all-core compute tests, making it the efficiency choice in the recorded data.

Q: How do they compare against other CPUs in the database?

A: They are nearly peers: the Ryzen 9 270 ranks in the 87th percentile with an average score of 40246, and the EPYC 4245P ranks in the 86th percentile with 39215.

Specification Differences

| Field | AMD Ryzen 9 270 | AMD EPYC 4245P |

|---|---|---|

| Series | not listed | EPYC 4005 series |

| Cores / Threads | 8 / 16 | 6 / 12 |

| Base Clock | 4.00 GHz | 3.90 GHz |

| Boost Clock | 5.20 GHz | 5.40 GHz |

| TDP | 45 W | 65 W |

| Socket | AMD Socket FP8 | AMD Socket AM5 |

| Architecture / Codename | Zen 4 (Hawk Point) | Zen 5 (Grado) |

| Transistors | 25,000 million | 8,315 million |

| Die Size | 178 mm² | 70.6 mm² |

| L1 Cache | 64 KB per core | 80 KB per core |

| L3 Cache | 16 MB shared | 32 MB shared |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 20 lanes (CPU only) | Gen 5, 24 lanes (CPU only) |

| Integrated Graphics | Radeon 780M | Radeon Graphics |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2025-01-05 | 2025-05-12 |

| Launch MSRP | not listed | $239 |

| Part Number | 100-000001836 | 100-000001555 |

Fields where the two match: manufacturer (AMD), process node (4 nm), foundry (TSMC), L2 cache (1 MB per core), memory support (DDR5), memory bus (dual-channel), memory bandwidth (89.6 GB/s), multiplier unlocked (no), and production status (active).