AMD EPYC 7543P vs AMD Ryzen 3 7440U Comparison

Head-to-Head Benchmarks

The benchmark data presents an unusually one-sided comparison. Across all six recorded head-to-head tests, the AMD EPYC 7543P wins outright. The Ryzen 3 7440U does not claim a single victory in any Cinebench workload, whether single-core or multi-core.

The Cinebench R23 multi-core test shows the largest absolute gap. The EPYC 7543P scores 56,683 points, while the Ryzen 3 7440U manages 11,042 points. That is a difference of roughly 80.5 percent in favor of the server processor. The same pattern repeats in Cinebench R20 multi-core, where the EPYC scores 23,806 against the Ryzen's 4,637, again an 80.5 percent margin.

What may surprise some readers is that the single-core results are not closer. In Cinebench R23 single-core, the EPYC 7543P scores 8,002, while the Ryzen 3 7440U scores 1,558. The delta is 80.5 percent in favor of the EPYC. The same story holds in Cinebench R20 single-core: 3,360 for the EPYC versus 654 for the Ryzen, an 80.5 percent difference. In Cinebench R15 single-core, the EPYC scores 806 versus 156 for the Ryzen, a margin of 80.6 percent.

This is a striking outcome. The Ryzen 3 7440U is built on a newer architecture with a higher boost clock, yet it trails in every recorded single-threaded test. The EPYC 7543P's advantage is consistent and large across all six benchmarks, with deltas clustering tightly between 80.5 and 80.6 percent. There is no workload in the recorded data where the mobile chip closes the gap.

The average benchmark score in the database tells a similar story. The EPYC 7543P carries an average score of 16,395, placing it at the 70th percentile among all CPUs. The Ryzen 3 7440U has an average score of 15,682, sitting at the 69th percentile. These averages are closer than the head-to-head results suggest, which indicates that the Ryzen's other recorded benchmarks, such as Geekbench and Passmark tests, help balance its overall profile. But in the direct Cinebench comparison, the EPYC is dominant.

Architecture Differences

The two processors come from different generations and serve different market segments. The Ryzen 3 7440U is a mobile part from the 7000 series, built on the Zen 4 architecture with the Phoenix2 codename. It uses a 4 nm process node from TSMC and packs 20,900 million transistors on a 137 mm² die. The EPYC 7543P belongs to the EPYC 7003 series, uses the Zen 3 architecture with the Milan codename, and is fabricated on a 7 nm process node. It contains 33,200 million transistors spread across eight dies, each 81 mm² in size.

Core counts differ enormously. The Ryzen 3 7440U has 4 cores and 8 threads. The EPYC 7543P has 32 cores and 64 threads. This eightfold difference in core count directly explains the multi-core benchmark results. The EPYC can simply process more threads simultaneously.

Cache hierarchies also diverge. Both processors share the same 64 KB L1 cache per core. The L2 cache differs: the Ryzen has 1 MB per core, while the EPYC has 512 KB per core. The L3 cache is where the EPYC pulls far ahead. The Ryzen 3 7440U has 8 MB of shared L3 cache. The EPYC 7543P has 256 MB shared. That is a 32-fold difference in last-level cache, which matters for server workloads with large working sets.

Clock speeds tell a different story. The Ryzen 3 7440U has a base clock of 3.00 GHz and a boost clock of 4.70 GHz. The EPYC 7543P has a base clock of 2.80 GHz and a boost clock of 3.70 GHz. The Ryzen has the higher clocks on paper, yet it still loses in single-threaded Cinebench tests. This suggests that the EPYC's architecture, despite being a generation older, delivers superior single-thread performance in these specific workloads, or that thermal and power constraints limit the mobile chip.

Memory support is another major differentiator. The Ryzen 3 7440U supports DDR5 memory over a dual-channel bus, with a memory bandwidth of 89.6 GB/s. The EPYC 7543P uses DDR4 memory across an eight-channel bus, delivering 204.8 GB/s of bandwidth. The EPYC's bandwidth advantage is roughly 2.3 times that of the Ryzen, which is critical for memory-intensive server applications.

Both processors support ECC memory, which is notable for a mobile chip. PCIe capabilities also differ. The Ryzen 3 7440U provides Gen 4 with 14 lanes from the CPU. The EPYC 7543P offers Gen 4 with 128 lanes. That is a massive difference in expansion capability, reflecting the EPYC's role as a server/workstation processor.

The Ryzen 3 7440U includes integrated graphics in the form of a Radeon 740M. The EPYC 7543P has no integrated graphics. This is expected for a server part, where discrete GPUs or compute accelerators handle display and parallel workloads.

Power consumption differs substantially. The Ryzen 3 7440U has a TDP of 28 watts. The EPYC 7543P has a TDP of 225 watts. This is nearly an eightfold difference, which has implications for cooling and system design. The EPYC requires a server platform with robust thermal management.

Sockets are incompatible. The Ryzen uses AMD Socket FP7, while the EPYC uses AMD Socket SP3. These are not interchangeable platforms. The Ryzen 3 7440U was released in May 2023, while the EPYC 7543P launched in March 2021. Despite the earlier release date, the EPYC remains the stronger performer in every recorded benchmark.

The Verdict

The data points to a clear conclusion for different use cases. The EPYC 7543P is the superior processor for multi-threaded, server-oriented workloads. Its 32 cores, 64 threads, 256 MB of L3 cache, 204.8 GB/s memory bandwidth, and 128 PCIe Gen 4 lanes make it purpose-built for heavy parallel computation. The Cinebench results confirm this: it leads by roughly 80.5 percent in every multi-core test.

The Ryzen 3 7440U is a mobile processor designed for efficiency and portability. Its 28 watt TDP, integrated Radeon 740M graphics, and DDR5 support make it suitable for thin-and-light laptops. Its benchmark profile, including Geekbench scores of 5,806 multi-core and 2,003 single-core, and Passmark results that include a 153,689 data compression score, shows it is a capable chip for everyday productivity. But it cannot compete with a 32-core server processor in raw compute throughput.

For buyers building a server or workstation, the EPYC 7543P is the obvious choice. The recorded data shows no area where the Ryzen 3 7440U wins. For buyers selecting a mobile processor, the Ryzen 3 7440U is the only one of the two that fits a laptop form factor. The EPYC's 225 watt TDP and SP3 socket are not viable in mobile systems.

The launch MSRP of the EPYC 7543P is $2730. The Ryzen 3 7440U has no recorded launch price. Neither processor has an unlocked multiplier, so overclocking is not a consideration.

FAQ

Q: Which processor wins in Cinebench R23 multi-core?

A: The AMD EPYC 7543P wins with a score of 56,683, compared to 11,042 for the Ryzen 3 7440U, a difference of 80.5 percent.

Q: Does the Ryzen 3 7440U win any benchmark in the head-to-head comparison?

A: No. The EPYC 7543P wins all six recorded head-to-head tests, covering Cinebench R15, R20, and R23 in both single-core and multi-core modes.

Q: How do the core counts compare?

A: The EPYC 7543P has 32 cores and 64 threads. The Ryzen 3 7440U has 4 cores and 8 threads.

Q: Which processor has more L3 cache?

A: The EPYC 7543P has 256 MB of shared L3 cache. The Ryzen 3 7440U has 8 MB of shared L3 cache.

Q: What memory types do these processors support?

A: The Ryzen 3 7440U supports DDR5 over a dual-channel bus with 89.6 GB/s bandwidth. The EPYC 7543P supports DDR4 over an eight-channel bus with 204.8 GB/s bandwidth.

Q: Is there integrated graphics on either processor?

A: The Ryzen 3 7440U includes a Radeon 740M integrated GPU. The EPYC 7543P has no integrated graphics.

Where Each One Wins

The EPYC 7543P wins in every recorded benchmark category. Its strengths are most pronounced in multi-threaded rendering workloads, as shown by Cinebench R23 multi-core at 56,683 points versus 11,042. It also leads in single-threaded tests, with Cinebench R23 single-core at 8,002 versus 1,558. The EPYC's 256 MB of L3 cache and 204.8 GB/s memory bandwidth make it well suited for data-heavy server applications.

The Ryzen 3 7440U's advantages are not visible in the head-to-head Cinebench results, but its broader benchmark profile shows strengths elsewhere. In Geekbench, it scores 5,806 multi-core and 2,003 single-core. In Passmark tests, it records 153,689 in data compression, 9,215 in data encryption, 10,356 in extended instructions, 20,291 in floating point math, and 36,758 in integer math. Its single-thread Passmark score is 2,614. These numbers place it at the 69th percentile among all CPUs, just one point below the EPYC's 70th percentile.

The Ryzen's 28 watt TDP, 4 nm process node, and integrated Radeon 740M graphics make it the appropriate choice for mobile systems where power efficiency and compact design matter. The EPYC's 225 watt TDP and server socket require a completely different class of hardware.

For workloads that fit within a laptop's thermal envelope, the Ryzen 3 7440U offers a balanced feature set including DDR5 support and ECC memory. For workloads that demand maximum thread count, cache capacity, memory bandwidth, and PCIe expansion, the EPYC 7543P is the clear winner in every recorded metric. The data does not identify any benchmark category where the Ryzen 3 7440U outperforms the EPYC 7543P.