AMD EPYC 9015 vs AMD Ryzen 9 7945HX3D Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep in the head-to-head comparison, with the AMD Ryzen 9 7945HX3D winning all 11 benchmark tests against the AMD EPYC 9015. The largest margin comes in data encryption, where the Ryzen 9 7945HX3D scores 42,367 against 17,790 for the EPYC 9015, a delta of 138.2%. This is followed closely by integer math, where the mobile chip posts 201,217 versus 92,524, a 117.5% advantage. The Ryzen 9 7945HX3D also shows a 111% lead in random string sorting with 83,919 points against 39,772.

The gap narrows considerably in single-threaded workloads, yet the Ryzen 9 7945HX3D still leads. Its single-thread score of 4,050 is 24% higher than the EPYC 9015's 3,265. In the physics test, the advantage is 49.4%, with scores of 4,321 and 2,893, respectively. The floating point math test shows a 97.4% gap, with the Ryzen 9 7945HX3D at 121,619 and the EPYC 9015 at 61,615.

The multithread score, which is often a strong indicator of overall throughput, shows the Ryzen 9 7945HX3D at 57,476 versus 30,689 for the EPYC 9015, a 87.3% delta. Data compression shows a 98.3% lead (699,988 vs 353,014), and extended instructions show an 87% lead (52,310 vs 27,970). In every test recorded, the Ryzen 9 7945HX3D delivers higher absolute performance, with no benchmark in the dataset where the EPYC 9015 emerges ahead.

Where Each One Wins

Based on the benchmark results, the AMD Ryzen 9 7945HX3D wins across every tested category. There is no workload in the dataset where the AMD EPYC 9015 posts a higher score. The margin of victory is consistent, ranging from a moderate 24% in single-thread performance to a dominant 138.2% in data encryption. This suggests the Ryzen 9 7945HX3D is positioned for tasks that demand high computational throughput, particularly those that benefit from heavy parallel processing and large cache access.

The EPYC 9015, despite having no wins, is not without its strengths in the broader context of its own benchmark profile. Its PassMark single-thread score of 3,265 and multithread score of 30,689 are respectable in absolute terms, but they are outclassed by the Ryzen 9 7945HX3D in this direct comparison. The data indicates that for any user comparing these two specific processors, the Ryzen 9 7945HX3D holds the performance advantage in every measured category, from integer math to floating point operations to physics simulations.

Architecture Differences

The two processors come from different design generations and target different segments. The AMD Ryzen 9 7945HX3D is based on the Zen 4 architecture, codenamed Dragon Range, and belongs to the Ryzen 9 7000 series for mobile. It is built on a 5 nm process node at TSMC with 17,840 million transistors. Its cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a shared 128 MB L3 cache, which includes a 1x 64MB 3D V-Cache slice. This large L3 is a defining feature for the mobile part.

The AMD EPYC 9015 uses the newer Zen 5 architecture, codenamed Turin, and is part of the EPYC 9005 series for server and workstation. It is manufactured on a 4 nm process node at TSMC, with 16,630 million transistors. Its cache is smaller per core in L1 at 80 KB, but the L2 is the same 1 MB per core. The shared L3 is 64 MB, exactly half of the Ryzen 9 7945HX3D, and it does not have a 3D V-Cache slice. The die sizes are similar, with the Ryzen 9 7945HX3D at 2x 71 mm² and the EPYC 9015 at 2x 70.6 mm², but the node difference is notable: 5 nm versus 4 nm.

Specification Differences

The two CPUs differ on nearly every core specification field. The AMD Ryzen 9 7945HX3D has 16 cores and 32 threads, while the AMD EPYC 9015 has 8 cores and 16 threads, meaning the Ryzen part has double the core and thread count. The base clock is higher on the EPYC 9015 at 3.60 GHz versus 2.30 GHz, but the boost clock is higher on the Ryzen 9 7945HX3D at 5.40 GHz versus 4.10 GHz. The thermal design power (TDP) is much lower on the Ryzen 9 7945HX3D at 55 W compared to the EPYC 9015's 125 W.

The platforms are entirely distinct. The Ryzen 9 7945HX3D uses AMD Socket FL1, while the EPYC 9015 uses AMD Socket SP5. The memory support for both is DDR5, but the bus configuration differs: the Ryzen 9 7945HX3D has a dual-channel memory bus with a bandwidth of 83.2 GB/s, whereas the EPYC 9015 has a twelve-channel memory bus with a bandwidth of 576.0 GB/s. The PCI-Express support is also different, with the Ryzen 9 7945HX3D offering Gen 5 with 28 lanes (CPU only), and the EPYC 9015 offering Gen 5 with 128 lanes (CPU only). The Ryzen 9 7945HX3D has integrated graphics (Radeon 610M), while the EPYC 9015 has no integrated graphics. The Ryzen 9 7945HX3D has an unlocked multiplier, while the EPYC 9015 is locked. The release dates are also different: the Ryzen 9 7945HX3D was released on 2023-07-26, and the EPYC 9015 was released on 2024-10-09.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 7945HX3D has 16 cores and 32 threads, while the AMD EPYC 9015 has 8 cores and 16 threads.

Q: What is the biggest single benchmark performance difference between the two?

A: The largest delta is in data encryption, where the AMD Ryzen 9 7945HX3D scores 42,367 versus 17,790 for the AMD EPYC 9015, a 138.2% advantage.

Q: Does the AMD EPYC 9015 win in any benchmark?

A: No. In the recorded head-to-head benchmarks, the AMD Ryzen 9 7945HX3D wins all 11 tests, with the EPYC 9015 having zero wins.

Q: What is the difference in memory bandwidth between the two?

A: The AMD Ryzen 9 7945HX3D has a memory bandwidth of 83.3 GB/s, while the AMD EPYC 9015 has a memory bandwidth of 576.0 GB/s.

Q: What are the TDP ratings for each processor?

A: The AMD Ryzen 9 7945HX3D has a TDP of 55 W, and the AMD EPYC 9015 has a TDP of 125 W.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 9 7945HX3D has a higher boost clock of 5.40 GHz, compared to the AMD EPYC 9015's boost clock of 4.10 GHz.

The Verdict

The data is unambiguous. For users prioritizing raw performance across the benchmark suite, the AMD Ryzen 9 7945HX3D is the clear choice. It delivers a substantial lead in every measured category, with the smallest advantage being 24% in single-thread performance and the largest being 138.2% in data encryption. The 7945HX3D's higher core count, larger shared L3 cache (128 MB vs 64 MB), and higher boost clock (5.40 GHz vs 4.10 GHz) all contribute to its dominance. It also has the advantage of a much lower TDP (55 W vs 125 W) and integrated graphics, making it a more power-efficient and self-contained option.

The AMD EPYC 9015, however, is a server-class part with notable strengths in its own right. Its twelve-channel memory bus provides a memory bandwidth of 576.0 GB/s, which is nearly 7 times higher than the Ryzen 9 7945HX3D's 83.3 GB/s. It also supports 128 PCIe Gen 5 lanes compared to 28 lanes on the Ryzen 9 7945HX3D. These features are designed for server and workstation environments where memory capacity and I/O expansion are critical. The EPYC 9015 also has a higher base clock (3.60 GHz vs 2.30 GHz) and a newer 4 nm process node. For users whose workloads are not represented in the benchmark set, such as massive memory bandwidth-bound tasks or high-density I/O operations, the EPYC 9015 may be the more appropriate choice. The choice is clear: the Ryzen 9 7945HX3D for general and multi-threaded performance, and the EPYC 9015 for server-specific infrastructure needs.