AMD EPYC 4464P vs AMD Ryzen AI 7 450G Comparison

The AMD EPYC 4464P and AMD Ryzen AI 7 450G are both 65 W AM5 processors, but they target entirely different workloads. The EPYC 4464P is a 12-core, 24-thread server/workstation part with a 5.40 GHz boost clock, while the Ryzen AI 7 450G is an 8-core, 16-thread desktop chip with a 5.10 GHz boost clock. The benchmark data shows a decisive split: the EPYC dominates multi-threaded throughput, while the Ryzen AI 7 450G holds a narrow single-thread edge. This analysis breaks down the head-to-head results, architectural differences, and use-case implications.

Head-to-Head Benchmarks

The EPYC 4464P wins 9 of the 11 shared benchmark tests, with the Ryzen AI 7 450G taking only the two single-threaded tests. The largest margin comes in `passmark_find_prime_numbers`, where the EPYC scores 343 against the Ryzen's 87, a 294.3% advantage. This test is highly sensitive to integer throughput and cache efficiency, and the EPYC's 64 MB shared L3 cache versus the Ryzen's 8 MB L3 likely explains the massive gap.

In `passmark_data_encryption`, the EPYC leads 35816 to 18937, a 89.1% delta. The EPYC's 12 cores and 24 threads provide substantially more parallel execution resources for cryptographic workloads. Similarly, `passmark_physics` shows the EPYC at 2873 versus 1440, a 99.5% difference, indicating near-double performance in physics simulation tasks that scale well with core count.

The `passmark_multithread` score reinforces the core-count advantage: EPYC scores 47514, while the Ryzen manages 30422, a 56.2% gap. This is a broad measure of multi-threaded performance, and the 50% core/thread advantage (12/24 vs 8/16) translates into a roughly proportional lead. In `passmark_integer_math`, the EPYC's 160410 beats the Ryzen's 99732 by 60.8%, and in `passmark_floating_point_math`, the EPYC's 93090 exceeds the Ryzen's 63683 by 46.2%.

The EPYC also wins `passmark_data_compression` (574304 vs 402831, 42.6% delta), `passmark_extended_instructions` (39359 vs 28223, 39.5% delta), and `passmark_random_string_sorting` (70200 vs 42663, 64.5% delta). These results consistently show the EPYC's superior multi-threaded performance across diverse workloads.

The Ryzen AI 7 450G's only wins are in `passmark_single_thread` (4309 vs 4146) and `passmark_singlethread` (identical score, 4309 vs 4146), both with a 3.8% margin. This indicates that the Ryzen's Zen 5 architecture, despite having fewer cores, offers slightly better per-thread performance than the EPYC's Zen 4 cores. The Ryzen's 4 nm process node, versus the EPYC's 5 nm, likely contributes to this single-thread efficiency.

In terms of overall average benchmark score, the EPYC 4464P scores 64823, while the Ryzen AI 7 450G scores 63331. The EPYC sits 0.3% above the Intel Core Ultra 7 265 and 0.4% below the AMD EPYC 9124, while the Ryzen AI 7 450G is 0.2% above the Intel Core Ultra 7 265HX and 0.4% above the Intel Core i7-13790F. Both processors are in the 93rd percentile of all CPUs, indicating they are both high-performance parts, but the EPYC's absolute score is higher.

The Verdict

From the data, the EPYC 4464P is the clear choice for multi-threaded, server, or workstation workloads. Its 56.2% lead in `passmark_multithread` and 89.1% lead in `passmark_data_encryption` demonstrate that it is designed for parallel processing. Users running virtual machines, database servers, or content creation tasks that utilize all cores will see substantial benefits. The EPYC's 93rd percentile ranking and its position above the Intel Core Ultra 7 265 in average score further cement its server-grade performance.

The Ryzen AI 7 450G is the pick for single-threaded or lightly-threaded desktop tasks where clock speed and per-core efficiency matter more than raw core count. Its 3.8% single-thread advantage over the EPYC, while modest, is consistent across both single-threaded tests. The Ryzen's unlocked multiplier also suggests overclocking potential, although this is not reflected in the benchmark data. For everyday desktop use, web browsing, or older applications that don't scale beyond a few threads, the Ryzen AI 7 450G is adequate, but it lags significantly in any multi-threaded scenario.

The data does not support the Ryzen AI 7 450G as a general-purpose replacement for the EPYC 4464P. The EPYC's wins are large and consistent, while the Ryzen's single-thread wins are small. The 93rd percentile ranking for both parts indicates they are both above-average CPUs, but the EPYC's higher average score (64823 vs 63331) and its dominance in 9 of 11 tests make it the superior processor for demanding workloads.

Architecture Differences

The EPYC 4464P is built on the Zen 4 architecture, codenamed Raphael, using a 5 nm process node from TSMC. It has 12 cores and 24 threads, with a base clock of 3.70 GHz and a boost clock of 5.40 GHz. The chip has 13,140 million transistors distributed across a 2x 71 mm² die size. Its cache hierarchy includes 64 KB L1 per core, 1 MB L2 per core, and a large 64 MB shared L3 cache. The EPYC supports DDR5 memory on a dual-channel bus, with a bandwidth of 83.2 GB/s, and includes ECC memory support. It provides PCIe Gen 5 with 28 CPU lanes and features integrated Radeon Graphics.

The Ryzen AI 7 450G uses a hybrid Zen 5 / Zen 5c architecture, codenamed Gorgon Point, on a 4 nm process node from TSMC. It has 8 cores and 16 threads, with a base clock of 2.00 GHz and a boost clock of 5.10 GHz. The die size is 195 mm², and the cache structure is smaller: 80 KB L1 per core, 1 MB L2 per core, and only 8 MB of shared L3. It supports both DDR5 and LPDDR5X memory on a dual-channel bus, with a slightly higher bandwidth of 89.6 GB/s, and also includes ECC memory support. The Ryzen provides PCIe Gen 4 with only 12 CPU lanes, and its integrated graphics are the Radeon 860M.

The most significant architectural differences are the core count (12 vs 8), the L3 cache size (64 MB vs 8 MB), and the process node (5 nm vs 4 nm). The EPYC's 64 MB L3 cache is 8 times larger than the Ryzen's 8 MB, which explains its dominance in cache-sensitive workloads like `passmark_find_prime_numbers`. The Ryzen's 4 nm process node and Zen 5 architecture provide better single-thread performance, but the EPYC's larger cache and higher thread count win in multi-threaded tests. The EPYC also offers more PCIe lanes (28 Gen 5 vs 12 Gen 4), which is critical for server expansion, while the Ryzen's memory bandwidth is slightly higher (89.6 vs 83.2 GB/s).

FAQ

Q: Which processor has a higher boost clock?

A: The AMD EPYC 4464P has a boost clock of 5.40 GHz, while the AMD Ryzen AI 7 450G has a boost clock of 5.10 GHz.

Q: How much larger is the L3 cache on the EPYC 4464P?

A: The EPYC 4464P has 64 MB of shared L3 cache, while the Ryzen AI 7 450G has 8 MB, making the EPYC's cache 8 times larger.

Q: What is the single-thread performance difference?

A: In `passmark_single_thread`, the Ryzen AI 7 450G scores 4309 versus the EPYC's 4146, a 3.8% advantage for the Ryzen.

Q: Which processor supports more PCIe lanes?

A: The EPYC 4464P supports PCIe Gen 5 with 28 CPU lanes, while the Ryzen AI 7 450G supports PCIe Gen 4 with 12 CPU lanes.

Q: What are the average benchmark scores for each?

A: The EPYC 4464P has an average benchmark score of 64823, and the Ryzen AI 7 450G has an average benchmark score of 63331.

Q: Are both processors in the same performance percentile?

A: Yes, both the EPYC 4464P and the Ryzen AI 7 450G are in the 93rd percentile of all CPUs.

Where Each One Wins

The EPYC 4464P wins in every multi-threaded benchmark category. It is the dominant choice for `passmark_find_prime_numbers`, `passmark_data_encryption`, `passmark_physics`, and `passmark_multithread`, where its core and cache advantages translate to massive leads (89.1%, 99.5%, and 56.2% respectively). It is also superior in `passmark_integer_math` (60.8% lead), `passmark_floating_point_math` (46.2% lead), and `passmark_random_string_sorting` (64.5% lead). Any workload that scales with cores, such as video rendering, scientific simulation, or server-side data processing, will favor the EPYC.

The Ryzen AI 7 450G wins in single-threaded performance, with a 3.8% lead in both `passmark_single_thread` and `passmark_singlethread`. This makes it the better choice for applications that are limited by a single core, such as older games, certain legacy software, or tasks requiring low-latency single-thread response. Its higher memory bandwidth (89.6 vs 83.2 GB/s) and unlocked multiplier are additional advantages for desktop users who value per-core speed and potential overclocking, though the benchmark data only supports the single-thread wins.

In summary, the EPYC 4464P is the definitive multi-threaded performer, winning 9 of 11 benchmarks with margins often exceeding 50%. The Ryzen AI 7 450G is a capable desktop processor with a single-thread edge, but it is outclassed in every multi-threaded test. The data clearly points to the EPYC for server and workstation tasks, and the Ryzen for single-thread-focused desktop use.