AMD Ryzen 5 3501U vs AMD Ryzen Embedded 8645HS Comparison

Head-to-Head Benchmarks

The AMD Ryzen 5 3501U and the AMD Ryzen Embedded 8645HS occupy different tiers of the mobile processor market, and the recorded data confirms this split clearly. The Ryzen 5 3501U has a full suite of PassMark benchmark results in the database, while the Ryzen Embedded 8645HS currently has no recorded benchmark scores. This absence of data for the 8645HS means a direct numerical comparison of individual tests is not possible from the recorded measurements. However, the architectural specifications and the existing benchmark profile of the 3501U provide a basis for understanding where each processor stands.

The Ryzen 5 3501U delivers a multi-thread score of 7071 and a single-thread score of 2136 in the database's PassMark tests. Its integer math score reaches 26321, while floating-point math hits 12707. The data compression test shows 87380, and data encryption scores 5580. Extended instructions score 3274, find prime numbers scores 21, physics scores 483, and random string sorting scores 10414. The average benchmark score for the 3501U is 14320, placing it at the 69th percentile among all CPUs in the database. Its nearest rivals in terms of average score are the AMD Ryzen Embedded V2546 at 14336 (0.1% ahead of the 3501U), the AMD Ryzen 3 7320C at 14277 (0.3% behind), the Intel Core 7 160UL at 14232 (0.6% behind), and the Intel Core i5-10400F at 14185 (1% behind). These delta percentages show the 3501U sits within a tight band of performance around its direct competitors, effectively matching them in aggregate throughput.

For the Ryzen Embedded 8645HS, the database records an average benchmark score of 0 with no individual test results, and a percentile rank of 50. This means the processor has not yet been measured in the database's benchmark suite, so no head-to-head wins can be claimed for either part based on recorded scores. The 8645HS is listed with a 50th percentile placement, which is a placeholder value rather than a measured result. The absence of benchmark data for the 8645HS is the single most important fact in this comparison: the 3501U has verified scores, the 8645HS does not.

Where Each One Wins

The Ryzen 5 3501U wins in every category where recorded data exists, simply because it is the only one of the two with benchmark results. Its multi-thread score of 7071 indicates solid parallel workload handling for a 4-core, 4-thread part. The single-thread score of 2136 shows respectable per-core performance for everyday responsiveness. The integer math score of 26321 and floating-point score of 12707 suggest balanced arithmetic capability, useful for general productivity tasks. The data compression score of 87380 is particularly strong, indicating efficient handling of compression workloads. Data encryption at 5580 and extended instructions at 3274 round out the cryptographic and SIMD-related capabilities.

The Ryzen Embedded 8645HS, by contrast, has no recorded wins in the database because no benchmarks have been run. Its specifications, however, point to a different performance class. With 6 cores and 12 threads, it has 50% more cores and three times the threads of the 3501U. Its base clock of 4.30 GHz and boost clock of 5.00 GHz are substantially higher than the 3501U's 2.10 GHz base and 3.70 GHz boost. The 8645HS also supports DDR5 memory with a bandwidth of 89.6 GB/s, more than double the 3501U's 38.4 GB/s with DDR4. These differences suggest the 8645HS would outperform the 3501U in multi-threaded and memory-bandwidth-intensive workloads once benchmark data becomes available, but the database currently holds no measured scores to confirm this.

Architecture Differences

The two processors come from different generations and architectures. The Ryzen 5 3501U is part of the 3000 series, uses the Picasso codename, and is built on the Zen+ architecture. It is manufactured on a 12 nm process at GlobalFoundries, with 4,940 million transistors on a 210 mm² die. The Ryzen Embedded 8645HS belongs to the 8000 series, uses the Hawk Point codename, and is built on the Zen 4 architecture. It is manufactured on a 4 nm process at TSMC, with 25,000 million transistors on a 178 mm² die. The process node difference is stark: 12 nm versus 4 nm, which directly affects transistor density and power efficiency. The 8645HS packs over five times the transistor count into a smaller die, indicating a much more advanced manufacturing process.

Cache hierarchies also differ significantly. The 3501U has 96 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The 8645HS has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. While the L1 is smaller per core on the 8645HS, the L2 is double per core, and the L3 is four times larger in total. This larger cache structure benefits the 8645HS in workloads with large working sets. The 8645HS also supports ECC memory, while the 3501U does not. PCIe support differs as well: the 3501U uses Gen 3, while the 8645HS uses Gen 4 with 20 lanes available to the CPU.

Integrated graphics differ too. The 3501U includes Radeon Vega 8 graphics, while the 8645HS includes Radeon 760M graphics. Both are integrated solutions, but they belong to different GPU generations. The 8645HS supports DDR5 memory, while the 3501U is limited to DDR4, which has a direct impact on memory bandwidth: 89.6 GB/s versus 38.4 GB/s.

Specification Differences

The two processors differ across nearly every major specification field in the database. The 3501U has 4 cores and 4 threads, while the 8645HS has 6 cores and 12 threads. Base clocks are 2.10 GHz versus 4.30 GHz, and boost clocks are 3.70 GHz versus 5.00 GHz. The 3501U has a TDP of 15 watts, while the 8645HS has a TDP of 45 watts, a threefold difference in power envelope. The 3501U uses AMD Socket FP5, while the 8645HS uses AMD Socket FP8, so they are not socket-compatible.

Memory support differs: the 3501U uses DDR4 with a dual-channel bus and 38.4 GB/s bandwidth, while the 8645HS uses DDR5 with a dual-channel bus and 89.6 GB/s bandwidth. ECC memory is not supported on the 3501U but is supported on the 8645HS. PCIe generation is Gen 3 on the 3501U versus Gen 4 on the 8645HS. The 8645HS has 20 PCIe lanes available to the CPU, while the 3501U's lane count is not listed in the database.

Process node and foundry differ: 12 nm at GlobalFoundries for the 3501U, versus 4 nm at TSMC for the 8645HS. Transistor counts are 4,940 million versus 25,000 million, and die sizes are 210 mm² versus 178 mm². The 3501U's L1 cache is 96 KB per core, while the 8645HS's is 64 KB per core. L2 cache is 512 KB per core versus 1 MB per core. L3 cache is 4 MB shared versus 16 MB shared. The 3501U's integrated graphics are Radeon Vega 8, while the 8645HS uses Radeon 760M.

Release dates differ: the 3501U was released on 2026-05-31, while the 8645HS was released on 2024-04-01. Neither has a launch MSRP recorded in the database. Both are active in production status, both target the mobile market segment, and neither has an unlocked multiplier. The 3501U has a part number of YM3501C4T4MFG, while the 8645HS's part number is listed as unknown.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen Embedded 8645HS has 6 cores and 12 threads. The AMD Ryzen 5 3501U has 4 cores and 4 threads.

Q: What are the clock speed differences between the two?

A: The Ryzen 5 3501U has a base clock of 2.10 GHz and a boost clock of 3.70 GHz. The Ryzen Embedded 8645HS has a base clock of 4.30 GHz and a boost clock of 5.00 GHz.

Q: Do they use the same memory type?

A: No. The Ryzen 5 3501U supports DDR4 with a memory bandwidth of 38.4 GB/s. The Ryzen Embedded 8645HS supports DDR5 with a memory bandwidth of 89.6 GB/s.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 8645HS supports ECC memory. The AMD Ryzen 5 3501U does not support ECC memory.

Q: What are the benchmark scores for the Ryzen 5 3501U?

A: The Ryzen 5 3501U has a multi-thread score of 7071, a single-thread score of 2136, integer math of 26321, floating-point math of 12707, data compression of 87380, data encryption of 5580, extended instructions of 3274, find prime numbers of 21, physics of 483, and random string sorting of 10414. Its average benchmark score is 14320.

Q: What benchmark data exists for the Ryzen Embedded 8645HS?

A: The database records no benchmark scores for the Ryzen Embedded 8645HS. Its average benchmark score is listed as 0, and it has no individual test results. Its percentile ranking is 50.