AMD EPYC 9015 vs AMD Ryzen 9 7945HX Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall win for the AMD Ryzen 9 7945HX, which takes 9 of the 11 shared benchmark tests. The most lopsided result comes in integer math, where the Ryzen 9 7945HX scores 207,524 against the EPYC 9015's 92,524, a difference of 124.3%. That gap translates into a major advantage for any workload built around arithmetic operations, database lookups, or general logic processing. The same pattern repeats in data encryption: the Ryzen 9 7945HX posts 42,703 versus 17,790, a 140% lead, which is the largest single-test delta in the entire comparison. For data compression, the Ryzen 9 7945HX doubles the EPYC's output, scoring 707,249 against 353,014, a 100.3% margin. Floating point math also shows a 100.3% advantage, with the mobile chip reaching 123,390 while the EPYC manages 61,615. Random string sorting, often a proxy for memory access patterns and cache behavior, favors the Ryzen 9 7945HX by 105.5% (81,736 versus 39,772). Extended instructions, which measure SIMD and AVX-type throughput, give the Ryzen 9 7945HX an 85.3% edge (51,834 versus 27,970). The multithread score, a broad aggregate of all-core performance, lands at 54,548 for the Ryzen 9 7945HX versus 30,689 for the EPYC 9015, a 77.7% advantage. Even in single-thread performance, where the EPYC's higher 3.60 GHz base clock might suggest an edge, the Ryzen 9 7945HX wins with 4,040 versus 3,265, a 23.7% lead. That result appears twice in the data set as passmark_single_thread and passmark_singlethread, both with identical scores.

The EPYC 9015 does claim two wins, both in specific computational niches. In prime number generation, the EPYC scores 304 against the Ryzen's 284, a 6.6% advantage. This test is sensitive to raw integer division and branch prediction, and the EPYC's Zen 5 architecture appears to handle the pattern better per clock. The EPYC also wins in physics calculations, scoring 2,893 versus 2,500, a 13.6% edge. The physics benchmark typically stresses FPU throughput on smaller thread counts, and here the EPYC's higher base clock and newer core design overcome the Ryzen's thread-count advantage. These two wins are real but narrow, and they do not offset the scale of the Ryzen's victories elsewhere. The average benchmark scores reflect the overall balance: the Ryzen 9 7945HX averages 60,099 across all recorded tests, while the EPYC 9015 averages 57,555. Both chips land in the 92nd percentile of all CPUs in the database, meaning they sit at the same tier of overall capability despite their very different designs. For context, the Ryzen 9 7945HX sits within 0.2% of the Intel Core i9-14900F and 0.8% of the AMD Ryzen 9 7945HX3D in average score, while the EPYC 9015 is within 0.1% of the AMD Ryzen 9 9900X and 1% of the Intel Core i9-14900. Neither part is far from its closest rivals, but the head-to-head data shows the 16-core mobile processor simply outproduces the 8-core server chip in almost every measurable category.

The Verdict

The data points to one clear conclusion: for raw compute throughput in the tested workloads, the AMD Ryzen 9 7945HX is the stronger processor. It wins 9 of 11 head-to-head tests, and its victories are often by massive margins, including a 140% lead in encryption and a 124.3% lead in integer math. The multithread score, which reflects all-core performance, favors the Ryzen 9 7945HX by 77.7%, and even single-thread performance favors it by 23.7%. The EPYC 9015 is not a weak chip; it sits in the same 92nd percentile of all CPUs and beats the Ryzen in prime number generation and physics. But those two wins are narrow, and the overall average score of 60,099 for the Ryzen versus 57,555 for the EPYC shows a consistent gap. The EPYC's launch MSRP is $527, but the Ryzen 9 7945HX has no listed launch MSRP in the database, so direct price comparison is not possible. Users who need maximum throughput across diverse workloads should select the Ryzen 9 7945HX. Users who specifically prioritize prime number generation or physics simulation, and who need the EPYC's server platform features, will find the EPYC 9015 competitive in those narrow areas, but the broader benchmark picture belongs to the Ryzen.

Where Each One Wins

The AMD Ryzen 9 7945HX wins in every category except two. Its strengths are most pronounced in encryption, integer math, compression, floating point math, and random string sorting, all of which show leads of 100% or more. The multithread and extended instruction tests also go to the Ryzen with 77.7% and 85.3% margins respectively. Single-thread performance, often a key metric for everyday responsiveness and lightly threaded applications, goes to the Ryzen by 23.7%. This makes the Ryzen 9 7945HX the clear choice for any workload that involves data processing, scientific computing, content creation, or general multitasking. Its 16 cores and 32 threads, combined with a 5.40 GHz boost clock, give it both the core count and the peak frequency to dominate aggregate workloads. The EPYC 9015 wins in prime number generation and physics calculations. These are narrower, more specialized tests, but they indicate that the EPYC's Zen 5 cores, clocked at 3.60 GHz base and 4.10 GHz boost, handle certain mathematical patterns more efficiently per thread. The physics win is particularly notable because the EPYC scores 13.6% higher despite having half the cores and threads. For users running physics simulations or prime-number-heavy algorithms, the EPYC 9015 offers a measurable advantage. Outside those two niches, the Ryzen 9 7945HX is the better performer. The EPYC also brings server-specific capabilities that the benchmarks do not capture, including a twelve-channel memory bus with 576.0 GB/s of bandwidth versus the Ryzen's dual-channel 83.2 GB/s, and 128 PCIe Gen 5 lanes versus 28. Those platform differences matter for memory-bound server workloads, but they do not show up in the PassMark tests recorded here.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen 9 7945HX has 16 cores and 32 threads. The AMD EPYC 9015 has 8 cores and 16 threads.

Q: Is the Ryzen 9 7945HX faster in single-threaded performance?

A: Yes. The Ryzen 9 7945HX scores 4,040 in the PassMark single-thread test, while the EPYC 9015 scores 3,265, a 23.7% advantage for the Ryzen.

Q: Does the EPYC 9015 win any benchmark tests?

A: Yes, it wins two: prime number generation (304 versus 284, a 6.6% edge) and physics (2,893 versus 2,500, a 13.6% edge).

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

A: The EPYC 9015 supports twelve-channel DDR5 memory with 576.0 GB/s of bandwidth. The Ryzen 9 7945HX supports dual-channel DDR5 with 83.2 GB/s.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen 9 7945HX and the AMD EPYC 9015 have ECC memory support listed in the database.

Q: How do the average benchmark scores compare?

A: The Ryzen 9 7945HX averages 60,099 across all recorded tests, while the EPYC 9015 averages 57,555. Both are in the 92nd percentile of all CPUs.

Architecture Differences

The two processors come from different generations and target different platforms. The AMD Ryzen 9 7945HX is a mobile part from the 7000 series, built on Zen 4 architecture with the codename Dragon Range. It uses a 5 nm process from TSMC and contains 13,140 million transistors across a die size of 2x 71 mm². The EPYC 9015 belongs to the EPYC 9005 series, uses Zen 5 architecture with the codename Turin, and is built on a 4 nm process, also from TSMC. It packs 16,630 million transistors across a die size of 2x 70.6 mm². The newer process node and higher transistor count give the EPYC a denser, more modern design despite having fewer cores. Clock speeds differ significantly. The Ryzen 9 7945HX has a base clock of 2.50 GHz and a boost clock of 5.40 GHz, while the EPYC 9015 has a base clock of 3.60 GHz and a boost clock of 4.10 GHz. The Ryzen has a much higher peak frequency, but the EPYC starts from a much higher base, which explains its wins in physics and prime number tests. Thermal design power also differs: the Ryzen 9 7945HX is rated at 55 W TDP, while the EPYC 9015 is rated at 125 W TDP. The Ryzen achieves its performance at less than half the TDP, though the EPYC's higher power budget is typical for a server part.

Cache layouts are similar in size but differ in per-core allocation. The Ryzen 9 7945HX has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The EPYC 9015 has 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The EPYC's larger L1 cache per core likely contributes to its prime number and physics wins. Memory support shows the biggest platform gap. The Ryzen 9 7945HX uses a dual-channel DDR5 interface with 83.2 GB/s of bandwidth, while the EPYC 9015 uses a twelve-channel DDR5 interface with 576.0 GB/s of bandwidth, nearly seven times the memory throughput. PCIe connectivity also diverges sharply: the Ryzen offers 28 Gen 5 lanes, while the EPYC offers 128 Gen 5 lanes. The Ryzen includes integrated Radeon 610M graphics, while the EPYC has no integrated graphics. The Ryzen uses AMD Socket FL1, is unlocked for overclocking, and was released on 2023-01-03. The EPYC uses AMD Socket SP5, is locked, and was released on 2024-10-09. Both support DDR5 and ECC memory, but the EPYC's server-oriented memory controller and massive PCIe lane count place it in a different class for platform expansion. The Ryzen's mobile design favors high clock speeds and power efficiency, while the EPYC's server design prioritizes memory bandwidth, I/O capacity, and sustained throughput.