AMD EPYC 7303 vs AMD Ryzen AI Max 385 Comparison

The AMD Ryzen AI Max 385 and the AMD EPYC 7303 land within a single percentile point of each other in the database rankings, yet they arrive there by completely different routes. The EPYC 7303 sits in the 89th percentile against all recorded CPUs with an average benchmark score of 45960, while the Ryzen AI Max 385 sits in the 88th percentile at 44309. That near-identical overall standing conceals a stark split: the EPYC dominates the rendering-style multi-core tests by roughly 35 percent, while the Ryzen AI Max 385 delivers almost triple the single-threaded Passmark performance. Neither chip is a general-purpose winner; the recorded data points to two sharply different optimal workloads.

The Verdict

The data divides cleanly along workload lines. For any task that scales across many threads, the EPYC 7303 is the clear pick: it wins all six Cinebench comparisons by margins between 35.4 and 35.7 percent, and it takes 10 of the 17 recorded head-to-head benchmarks overall. Its 16 cores and 32 threads, twice the core count of the mobile part, translate directly into that rendering advantage.

For anything that depends on fast individual threads, the Ryzen AI Max 385 is the obvious choice. Its Passmark single-thread score of 4060 against 1460 for the EPYC is a gap of 178.1 percent, one of the largest disparities in the entire comparison set. It also wins the Passmark multithread rating (33705 versus 28572, an 18 percent edge), floating point math (71105 versus 64940, up 9.5 percent), extended instructions (33873 versus 31603, up 7.2 percent), physics (1889 versus 1792, up 5.4 percent), and string sorting (43725 versus 42259, up 3.5 percent). A buyer optimizing for responsiveness per thread should pick the Ryzen; a buyer optimizing for throughput on parallel rendering loads should pick the EPYC.

Architecture Differences

These are two AMD processors separated by two Zen generations and two market segments. The Ryzen AI Max 385, codename Strix Halo, uses the Zen 5 architecture on TSMC's 4 nm process, with two dies of 70.6 mm² each. It is a mobile-segment part with 8 cores and 16 threads, a 3.60 GHz base clock, a 5.00 GHz boost clock, and a 55 W thermal design point. It fits Socket FP11 and integrates Radeon 8050S graphics, making it self-contained for platforms without a discrete GPU.

The EPYC 7303, codename Milan, is a server and workstation chip from the EPYC 7003 series built on Zen 3 and TSMC's 7 nm node, with two dies of 81 mm² each and 8300 million transistors. It doubles the cores to 16 and threads to 32, but runs far lower clocks: 2.40 GHz base and 3.40 GHz boost, inside a 130 W thermal envelope on Socket SP3.

Cache organization also diverges. The Ryzen carries 80 KB of L1 and 1 MB of L2 per core, with 32 MB of shared L3. The EPYC carries 64 KB of L1 and 512 KB of L2 per core, with 64 MB of shared L3, so the server chip compensates for lower clocks with double the L3 pool. Memory paths differ just as sharply: the Ryzen uses quad-channel LPDDR5X at 256.0 GB/s of bandwidth, while the EPYC uses eight-channel DDR4 at 204.8 GB/s, and despite the older memory standard it offers 128 lanes of PCIe 4 versus 16 lanes of PCIe 4 on the mobile part. Both support ECC memory, and neither has an unlocked multiplier. The EPYC 7303 carries a launch MSRP of $604; no launch MSRP is recorded for the Ryzen AI Max 385.

Head-to-Head Benchmarks

The rendering suite is a rout. In Cinebench R15 the EPYC scores 2448 multi-core and 345 single-core against 1579 and 222 for the Ryzen, margins of 35.5 and 35.7 percent. Cinebench R20 repeats the pattern: 10200 versus 6583 in multi-core (35.5 percent) and 1439 versus 929 in single-core (35.4 percent). Cinebench R23 lands at 24286 versus 15674 multi-core and 3428 versus 2212 single-core, both 35.5 percent gaps. The consistency of that margin across three Cinebench generations and both thread counts is striking: even in single-core rendering, where the Ryzen's 5.00 GHz boost should help most, the EPYC stays comfortably ahead.

The Passmark suite tells the opposite story in places. Single-thread is the headline: 4060 for the Ryzen against 1460 for the EPYC, a 178.1 percent advantage. That gap reflects the EPYC's modest 3.40 GHz boost ceiling, a server-oriented clock policy that sacrifices per-thread speed. The Ryzen also wins the overall Passmark multithread rating, 33705 to 28572, an 18 percent edge, suggesting that the mixed Passmark workload rewards the newer Zen 5 cores even against double the threads. It wins floating point math 71105 to 64940 (9.5 percent), extended instructions 33873 to 31603 (7.2 percent), physics 1889 to 1792 (5.4 percent), and string sorting 43725 to 42259 (3.5 percent).

The EPYC's remaining Passmark wins are narrower than its Cinebench dominance. Data encryption goes to the EPYC 25167 to 19926 (20.8 percent), prime number searching 180 to 165 (8.3 percent), integer math 113422 to 107046 (5.6 percent), and data compression 428319 to 406505 (5.1 percent). The overall tally stands at 10 wins for the EPYC and 7 for the Ryzen AI Max 385.

FAQ

Q: Which CPU is faster overall according to the database?

A: They are nearly tied. The EPYC 7303 averages 45960 and ranks in the 89th percentile; the Ryzen AI Max 385 averages 44309 and ranks in the 88th percentile. The EPYC is ahead by a slim margin on aggregate, but the composition of that average differs greatly, since the EPYC wins by large margins in rendering while the Ryzen wins single-thread work by a huge margin.

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

A: The Ryzen AI Max 385's closest rivals are the Intel Core i9-13950HX (average 44342, within 0.1 percent), the Intel Core i5-13600 (44240, within 0.2 percent), the Intel Core Ultra X9 388H (44466, within 0.4 percent), and the AMD Ryzen 5 7500X3D (44573, within 0.6 percent). The EPYC 7303 is essentially indistinguishable from the Intel Core i7-14700HX (45953) and the AMD EPYC 4364P (45970), and sits within 0.2 percent of the AMD Ryzen AI 9 HX 375 (46030) and the Intel Core Ultra 5 235 (46062).

Q: Which chip is better for rendering?

A: The EPYC 7303, decisively. It leads every Cinebench test by roughly 35 percent, from 2448 versus 1579 in R15 multi-core up to 24286 versus 15674 in R23 multi-core.

Q: Which chip is better for single-threaded applications?

A: The Ryzen AI Max 385. Its Passmark single-thread score of 4060 is 178.1 percent higher than the EPYC's 1460, a direct consequence of its 5.00 GHz boost clock against the EPYC's 3.40 GHz.

Q: Do both CPUs support ECC memory?

A: Yes, both are recorded with ECC support, which matters for workstation and reliability-sensitive deployments.

Q: Does either chip include integrated graphics?

A: Only the Ryzen AI Max 385, which integrates Radeon 8050S graphics. The EPYC 7303 has none recorded.

Where Each One Wins

The Ryzen AI Max 385 wins wherever per-thread speed or mixed workload responsiveness dominates. Its 178.1 percent single-thread lead, its 18 percent Passmark multithread advantage, and its wins in floating point math, physics, extended instructions, and string sorting all point to interactive desktop-style use, development work, simulation with heavy floating point content, and workloads that favor strong IPC and high clocks over raw thread count. Its 256.0 GB/s of memory bandwidth on LPDDR5X also exceeds the EPYC's 204.8 GB/s, useful for bandwidth-hungry integrated graphics or data streaming, and it does all of this within a 55 W envelope.

The EPYC 7303 wins on sustained parallel throughput. The 35 percent sweep of every Cinebench test, plus wins in encryption, integer math, compression, and prime number search, mark it as the rendering and batch-processing choice. Add 128 PCIe 4 lanes against 16, eight memory channels, and a 64 MB shared L3, and it fits server and workstation builds where device attach and parallel jobs matter more than snappy individual threads.

Specification Differences

• Cores/threads: Ryzen AI Max 385 has 8 cores and 16 threads; EPYC 7303 has 16 cores and 32 threads.
• Clocks: Ryzen runs 3.60 GHz base and 5.00 GHz boost; EPYC runs 2.40 GHz base and 3.40 GHz boost.
• TDP: 55 W for the Ryzen versus 130 W for the EPYC.
• Socket: FP11 versus SP3.
• Architecture and process: Zen 5 on 4 nm versus Zen 3 on 7 nm.
• Cache: 80 KB L1 and 1 MB L2 per core with 32 MB shared L3 on the Ryzen; 64 KB L1 and 512 KB L2 per core with 64 MB shared L3 on the EPYC.
• Memory: quad-channel LPDDR5X at 256.0 GB/s versus eight-channel DDR4 at 204.8 GB/s.
• PCIe: 16 Gen 4 lanes versus 128 Gen 4 lanes.
• Graphics: Radeon 8050S integrated versus none.
• Segment and dies: mobile with 2x 70.6 mm² dies versus server/workstation with 2x 81 mm² dies and 8300 million transistors.
• Release timing: the Ryzen AI Max 385 was released on January 5, 2025; the EPYC 7303 on September 4, 2023.