AMD EPYC 9334 vs AMD Ryzen 3 7440U Comparison

The AMD EPYC 9334 and AMD Ryzen 3 7440U represent opposite poles of the Zen 4 landscape, yet both are active products aimed at entirely different workloads. The EPYC 9334 is a 32-core server processor with 64 threads, designed for massive parallel throughput in a data center. The Ryzen 3 7440U is a 4-core, 8-thread mobile chip, built for efficiency in thin-and-light laptops. Benchmark data shows a stark performance chasm, with the EPYC winning all six head-to-head comparisons by roughly 400% each time. However, the average benchmark scores tell a more nuanced story: the EPYC scores 15,940, while the Ryzen 3 scores 15,682, a difference of only about 1.6%. This discrepancy highlights that while the server chip dominates in multi-core rendering, the mobile chip holds its own in other performance metrics, making the choice between them a matter of workload rather than raw capability.

Where Each One Wins

The EPYC 9334 is the undisputed winner in any multi-threaded, compute-intensive scenario. Its six head-to-head victories are all in Cinebench tests, which measure CPU rendering performance. In Cinebench R23 multi-core, the EPYC scores 55,110 against the Ryzen’s 11,042, a 399.1% advantage. This translates directly to workloads like 3D rendering, video encoding, scientific simulation, and database processing. The EPYC’s 32 cores and 64 threads provide a linear scaling advantage that the 4-core Ryzen cannot match. For servers running virtualization, the 128 MB of shared L3 cache and twelve-channel DDR5 memory bus (460.8 GB/s) further cement its position as a heavy-lifting workhorse.

The Ryzen 3 7440U, despite losing all head-to-head Cinebench tests, is not without its strengths. Its advantage lies in efficiency and integration. With a 28W TDP versus the EPYC’s 210W, the Ryzen is designed for battery-powered devices where sustained performance is secondary to thermal and power budgets. It also features integrated Radeon 740M graphics, which the EPYC lacks entirely. This makes the Ryzen the clear choice for everyday mobile computing, light content creation, and any task that benefits from a GPU without a discrete card. Its benchmark profile includes PassMark and Geekbench scores, where it performs admirably for its class, but these are not directly comparable to the EPYC’s Cinebench-only results.

Architecture Differences

Both processors are built on Zen 4 architecture, but they diverge significantly in implementation. The EPYC 9334, codenamed Genoa, uses a 5 nm process from TSMC and packs 52,560 million transistors across a multi-chiplet design with a 4x 72 mm² die size. The Ryzen 3 7440U, codenamed Phoenix2, uses a newer 4 nm process with 20,900 million transistors on a single 137 mm² die. This process advantage gives the Ryzen a higher boost clock of 4.70 GHz versus the EPYC’s 3.90 GHz, and a higher base clock of 3.00 GHz versus 2.70 GHz. Single-threaded performance per clock is therefore superior on the Ryzen, though the EPYC’s sheer core count overwhelms this in multi-threaded tests.

Cache configurations illustrate the different design goals. The EPYC provides 64 KB of L1 and 1 MB of L2 per core, but its key asset is 128 MB of shared L3 cache, enabling massive data reuse across 32 cores. The Ryzen has the same per-core L1 and L2, but only 8 MB of shared L3, which is sufficient for four cores but pales in comparison. Memory support also differs: the EPYC uses twelve-channel DDR5 with 460.8 GB/s bandwidth, while the Ryzen uses dual-channel DDR5 with 89.6 GB/s. Both support ECC memory, but the EPYC’s memory bandwidth is critical for server workloads. PCIe connectivity further separates them: the EPYC offers Gen 5 with 128 lanes, while the Ryzen offers Gen 4 with 14 lanes. The Ryzen’s integrated Radeon 740M is absent on the EPYC, which relies on discrete GPUs.

Head-to-Head Benchmarks

The head-to-head results are remarkably consistent, with the EPYC 9334 winning every Cinebench test by a delta of approximately 399-403%. In Cinebench R15 multi-core, the EPYC scores 5,555 versus 1,112 for the Ryzen, a 399.6% advantage. The single-core R15 test shows a similar gap: 784 versus 156, a 402.6% delta. This pattern repeats in R20 and R23. For R20 multi-core, the EPYC’s 23,146 beats the Ryzen’s 4,637 by 399.2%. In R20 single-core, the EPYC scores 3,267 against 654, a 399.5% lead. The R23 multi-core result is 55,110 versus 11,042 (399.1%), and R23 single-core is 7,780 versus 1,558 (399.4%).

These deltas are suspiciously uniform, hovering around 400% across all tests. This suggests that the performance difference is primarily a factor of core count and thread count, rather than architectural efficiency. The EPYC has eight times the cores and threads of the Ryzen (32 vs 4 cores, 64 vs 8 threads). While the multi-core advantage is expected, the fact that even single-core tests show a 400% delta is surprising. This is because the Ryzen’s higher boost clock (4.70 GHz vs 3.90 GHz) should narrow the gap, but the data shows the EPYC still wins decisively. This could indicate differences in thermal headroom, power delivery, or that the Ryzen’s Phoenix2 design sacrifices single-thread performance for power efficiency. Regardless, the EPYC 9334 is the clear victor in every Cinebench metric.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 9334 has 32 cores and 64 threads, while the AMD Ryzen 3 7440U has 4 cores and 8 threads. This 8x difference is the primary driver of the EPYC’s multi-core benchmark dominance.

Q: Does the Ryzen 3 7440U have integrated graphics?

A: Yes, the Ryzen 3 7440U includes Radeon 740M integrated graphics. The EPYC 9334 has no integrated graphics, requiring a discrete GPU for display output.

Q: What is the memory bandwidth difference?

A: The EPYC 9334 supports twelve-channel DDR5 memory with a bandwidth of 460.8 GB/s. The Ryzen 3 7440U supports dual-channel DDR5 with a bandwidth of 89.6 GB/s. This makes the EPYC vastly superior for memory-intensive server applications.

Q: Which processor has a higher boost clock?

A: The Ryzen 3 7440U has a higher boost clock of 4.70 GHz, compared to the EPYC 9334’s boost clock of 3.90 GHz. Despite this, the EPYC wins all single-core Cinebench tests by a wide margin.

Q: Are both processors based on the same architecture?

A: Yes, both use Zen 4 architecture. However, the EPYC 9334 is built on a 5 nm process (TSMC), while the Ryzen 3 7440U uses a 4 nm process (TSMC). The EPYC has a multi-chiplet design with 4x 72 mm² dies, while the Ryzen uses a single 137 mm² die.

Q: What is the average benchmark score for each processor?

A: The EPYC 9334 has an average benchmark score of 15,940, while the Ryzen 3 7440U has an average score of 15,682. This places them in the 70th and 69th percentiles of all CPUs, respectively, showing they are comparable in overall performance despite their different designs.

The Verdict

The data presents a clear directive: choose the AMD EPYC 9334 for any workload that demands maximum multi-core throughput. Its 32-core configuration delivers a 399.1% advantage in Cinebench R23 multi-core, and its 128 MB of L3 cache and 460.8 GB/s memory bandwidth make it ideal for servers, virtualization, and heavy rendering. The EPYC also leads in single-core Cinebench tests despite a lower clock speed, indicating superior sustained performance under load. Its 210W TDP and server socket (SP5) are acceptable trade-offs for data center environments. The launch MSRP is $2990.

Choose the AMD Ryzen 3 7440U for mobile, power-sensitive applications. Its 28W TDP, integrated Radeon 740M graphics, and 4 nm process make it suitable for laptops where battery life and thermal efficiency are paramount. Its 4.70 GHz boost clock provides responsive single-threaded performance for everyday tasks, and its average benchmark score is only 1.6% lower than the EPYC’s, showing it is not a slouch in general computing. However, it loses every Cinebench head-to-head by a significant margin, so it is not suited for heavy rendering or server workloads. The Ryzen’s dual-channel memory and 8 MB of L3 cache are sufficient for its core count but limit its scalability. Ultimately, this is not a competition between equals; it is a decision between a server workhorse and a mobile efficiency chip, each excelling in its respective domain.