AMD EPYC 75F3 vs AMD EPYC 9334 Comparison

The AMD EPYC 9334 and the AMD EPYC 75F3 are both 32-core server processors, but they represent different generations of AMD’s EPYC lineup. The 9334 is a Zen 4 (Genoa) part on the SP5 platform, while the 75F3 is a Zen 3 (Milan) part on the SP3 platform. Benchmark data shows the 9334 edges out the 75F3 across every Cinebench test included, though the margins are consistently slim, at 0.5% in each case. Both processors hold the 70th percentile in the database, and their average benchmark scores differ by only 0.5%, making this a close contest between two capable server CPUs.

FAQ

Q: Which processor has the higher base clock speed?

A: The AMD EPYC 75F3 has a base clock of 2.95 GHz, which is higher than the 2.70 GHz base clock of the AMD EPYC 9334.

Q: How do the two chips compare in single-core Cinebench R23 performance?

A: The AMD EPYC 9334 scores 7780 in Cinebench R23 single-core, while the AMD EPYC 75F3 scores 7740. This gives the 9334 a 0.5% lead in that test.

Q: What is the difference in their average benchmark scores?

A: The AMD EPYC 9334 has an average benchmark score of 15940, while the AMD EPYC 75F3 has an average score of 15859. The 9334 is 0.5% ahead of the 75F3 in this metric.

Q: Which processor supports DDR5 memory?

A: The AMD EPYC 9334 supports DDR5 memory, whereas the AMD EPYC 75F3 supports DDR4 memory.

Q: What is the process node for each chip?

A: The AMD EPYC 9334 is built on a 5 nm process, while the AMD EPYC 75F3 is built on a 7 nm process.

Q: In the head-to-head benchmarks, how many tests does each processor win?

A: The AMD EPYC 9334 wins all 6 head-to-head tests. The AMD EPYC 75F3 wins 0 tests.

Architecture Differences

The two processors are built on fundamentally different architectures. The AMD EPYC 9334 is part of the EPYC 9004 series, using the Zen 4 architecture with the codename Genoa. It is manufactured by TSMC on a 5 nm process node, containing 52,560 million transistors spread across a die size of 4x 72 mm². In contrast, the AMD EPYC 75F3 belongs to the Zen 3 architecture with the codename Milan, fabricated on a 7 nm process node with 33,200 million transistors and a die size of 8x 81 mm². The 9334’s newer process node allows for a more compact transistor layout, which correlates with its lower 210 W thermal design power (TDP) compared to the 75F3’s 280 W TDP.

Cache hierarchies also differ significantly. Both chips have 64 KB of L1 cache per core and 1 MB of L2 cache per core for the 9334, but the 75F3 has 512 KB of L2 cache per core. The most notable difference is in L3 cache: the 9334 has 128 MB shared, while the 75F3 offers 256 MB shared. This means the 75F3 has double the L3 cache of the 9334, which can be beneficial for certain workloads that rely heavily on cached data.

Memory support is another major architectural divergence. The 9334 uses DDR5 memory with a twelve-channel memory bus, delivering a memory bandwidth of 460.8 GB/s. The 75F3 uses DDR4 memory with an eight-channel bus, providing 204.8 GB/s of bandwidth. The 9334’s memory subsystem offers more than double the theoretical bandwidth, which is a significant advantage for memory-intensive tasks. Both processors support ECC memory. The 9334 also features PCIe Gen 5 with 128 lanes (CPU only), while the 75F3 features PCIe Gen 4 with 128 lanes (CPU only), giving the newer chip a generational advantage in I/O bandwidth.

The Verdict

The data points to a clear, if narrow, winner. The AMD EPYC 9334 outperforms the AMD EPYC 75F3 in every single benchmark test recorded, from Cinebench R15 to R23, in both single-core and multi-core workloads. While the 0.5% delta in each test is small, it is consistent across all six head-to-head comparisons, and the 9334 also holds a 0.5% advantage in average benchmark score (15940 vs 15859). For buyers choosing between these two based purely on raw compute performance, the 9334 is the superior part.

However, the choice is not solely about compute scores. The 9334 brings architectural benefits that are not captured in Cinebench scores: it supports DDR5 memory with more than double the bandwidth (460.8 GB/s vs 204.8 GB/s), which can translate to real-world gains in memory-bound server applications. It also runs on the newer SP5 socket with PCIe Gen 5 support, offering a more modern platform for future upgrades. The 75F3, on the other hand, offers double the L3 cache (256 MB vs 128 MB), which could be advantageous in specific workloads that benefit from larger cache pools. The 75F3 also has a higher boost clock of 4.00 GHz compared to 3.90 GHz on the 9334, though this does not translate to a benchmark win.

Given that the 9334 wins all benchmark comparisons and offers a newer architecture with superior memory bandwidth, it is the recommended choice on performance grounds. The 75F3 remains a viable option for those who prioritize larger L3 cache or who are constrained by the SP3 platform, but the data does not show any performance category where it beats the 9334.

Specification Differences

The two processors differ across several key specifications. The AMD EPYC 9334 has a base clock of 2.70 GHz, while the AMD EPYC 75F3 has a higher base clock of 2.95 GHz. The boost clock also differs, with the 9334 reaching 3.90 GHz and the 75F3 reaching 4.00 GHz. The 9334 has a TDP of 210 W, whereas the 75F3 has a TDP of 280 W. The socket types are different: the 9334 uses AMD Socket SP5, while the 75F3 uses AMD Socket SP3.

The process node and transistor counts are notably different. The 9334 is on a 5 nm process with 52,560 million transistors and a die size of 4x 72 mm². The 75F3 is on a 7 nm process with 33,200 million transistors and a die size of 8x 81 mm². Memory support diverges: the 9334 supports DDR5 with a twelve-channel bus and 460.8 GB/s bandwidth, while the 75F3 supports DDR4 with an eight-channel bus and 204.8 GB/s bandwidth. The PCIe version also differs, with the 9334 supporting Gen 5 and the 75F3 supporting Gen 4, both with 128 lanes. The L2 cache per core is 1 MB for the 9334 and 512 KB for the 75F3, while the L3 cache is 128 MB for the 9334 and 256 MB for the 75F3. The release dates are also different: the 9334 was released on 2022-11-09, while the 75F3 was released on 2021-03-14.

Head-to-Head Benchmarks

The benchmark results are remarkably consistent across all six tests, with the AMD EPYC 9334 taking a 0.5% lead in each instance. The largest absolute difference is in Cinebench R23 multi-core, where the 9334 scores 55110 against the 75F3’s 54829, a margin of 281 points. The smallest absolute difference is in Cinebench R15 single-core, where the 9334 scores 784 and the 75F3 scores 780, a gap of just 4 points.

In multi-core tests, the 9334’s advantage holds steady. Cinebench R15 multi-core shows 5555 vs 5526, Cinebench R20 multi-core shows 23146 vs 23028, and Cinebench R23 multi-core shows 55110 vs 54829. Each of these represents a 0.5% win for the 9334. The single-core results follow the same pattern: Cinebench R15 single-core (784 vs 780), Cinebench R20 single-core (3267 vs 3250), and Cinebench R23 single-core (7780 vs 7740) all show a 0.5% lead for the 9334.

The consistency of the 0.5% delta across all tests is striking. It suggests that the performance difference between the two chips is uniform across different workload types, from single-threaded to heavily multi-threaded tasks. The 9334’s architectural advantages, such as DDR5 memory support and a newer process node, do not appear to translate into a larger benchmark gap in these specific tests. However, the 9334 does win every test, giving it a perfect 6-0 record in the head-to-head comparison. The 75F3’s higher boost clock (4.00 GHz vs 3.90 GHz) and larger L3 cache (256 MB vs 128 MB) are not enough to overcome the 9334’s overall compute advantage in these Cinebench workloads.