AMD Ryzen 5 PRO 8645HS vs Intel Core 9 273PE Comparison

The Verdict

The data in this comparison is unambiguous. The Intel Core 9 273PE wins 15 of the 17 recorded head-to-head benchmarks, while the AMD Ryzen 5 PRO 8645HS wins only 2, both in the same PassMark single-thread test. The Intel part holds a significant overall performance advantage, reflected in its average benchmark score of 49845 against the AMD's 30879. In the database's percentile ranking, the Intel Core 9 273PE sits at the 90th percentile of all CPUs, while the AMD Ryzen 5 PRO 8645HS sits at the 82nd percentile.

The Intel Core 9 273PE is the choice for any workload that scales with core count or raw compute throughput. Its 12 cores and 24 threads more than double the thread count of the AMD's 6 cores and 12 threads. This shows up starkly in multithreaded tests: the Intel part is 36% ahead in Cinebench R23 multicore and 36% ahead in PassMark multithread. It also wins decisively in floating-point math, integer math, and physics simulations, with deltas ranging from 47.8% to 61.3% in its favor.

The AMD Ryzen 5 PRO 8645HS does hold one genuine advantage: PassMark single-thread performance. Its score of 3858 beats the Intel's 3650, a 5.7% delta. This means for workloads that are strictly single-threaded and cannot use additional cores, the AMD part is the faster option. The AMD part also draws less power on paper, with a 45 W TDP versus the Intel's 65 W, and it uses a smaller 4 nm process node versus Intel's 10 nm node. For a mobile platform, these are relevant characteristics.

The production status for both parts is Active. The AMD part carries a release date of April 2024, while the Intel part is dated March 2026. The Intel part has a recorded launch MSRP of $549, which can be stated once as a reference point. The AMD part has no recorded launch MSRP in the database.

Where Each One Wins

The Intel Core 9 273PE wins in every Cinebench test recorded, both single-core and multi-core. In Cinebench R15, R20, and R23, the Intel part is consistently 36.9% ahead in multicore and 36.9% to 37.1% ahead in single-core. This is a uniform margin across all three Cinebench versions, indicating a stable architectural advantage in both single-threaded and heavily threaded rendering workloads.

The Intel part also dominates the PassMark suite. Its largest wins come in find prime numbers (64% ahead), physics (61.3% ahead), and floating-point math (57.8% ahead). Integer math shows a 47.8% advantage. Data compression, a test that benefits strongly from core count, shows the Intel part at 34.5% ahead. Data encryption shows a 23.5% lead, and extended instructions show a 13.9% lead. Random string sorting is the narrowest PassMark win for Intel at 21.3% ahead.

The AMD Ryzen 5 PRO 8645HS wins only the PassMark single-thread test, at 3858 versus 3650, a 5.7% margin. This is the sole bright spot for AMD in the recorded data. The AMD part's higher base clock of 4.30 GHz compared to the Intel's 2.30 GHz likely contributes to this result, though the Intel part has a higher boost clock at 5.70 GHz versus 5.00 GHz. In the recorded single-thread PassMark test, the AMD part's advantage holds despite the Intel's higher boost ceiling.

For use-case planning, the data suggests that any workload dominated by a single thread, such as certain legacy applications or lightly threaded interactive tasks, may see a small benefit from the AMD part. Everything else, including rendering, simulation, compression, encryption, and general multithreaded compute, is strongly in favor of the Intel Core 9 273PE.

Architecture Differences

The two processors come from different manufacturers, use different manufacturing processes, and target different market segments. The AMD Ryzen 5 PRO 8645HS is a mobile part built on Zen 4 architecture with the codename Hawk Point. It uses a 4 nm process node from TSMC, with 25,000 million transistors on a 178 mm² die. The Intel Core 9 273PE is a desktop part with the codename Bartlett Lake, built on a 10 nm process node from Intel, and the database does not record its transistor count or die size.

Core and cache configurations differ substantially. The AMD part has 6 cores and 12 threads, while the Intel part has 12 cores and 24 threads. The AMD part has 64 KB of L1 cache per core, 1 MB of L2 per core, and 16 MB of shared L3. The Intel part has 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. The Intel part's larger L3 cache, more than double the AMD's, aligns with its higher multithreaded throughput in the recorded benchmarks.

Clock speeds follow different strategies. The AMD part has a base clock of 4.30 GHz and a boost clock of 5.00 GHz. The Intel part has a much lower base clock of 2.30 GHz but a higher boost clock of 5.70 GHz. The higher base clock on the AMD part likely explains its single-thread PassMark win, while the Intel part's higher boost clock and additional cores drive its broader benchmark dominance.

Memory support differs. The AMD part supports DDR5 only, while the Intel part supports both DDR4 and DDR5. Both use a dual-channel memory bus, and both have a recorded memory bandwidth of 89.6 GB/s. Both support ECC memory. PCIe connectivity differs: the AMD part uses Gen 4 with 20 lanes (CPU only), while the Intel part uses Gen 5 with 16 lanes (CPU only).

Integrated graphics also differ. The AMD part uses a Radeon 760M, while the Intel part uses UHD Graphics 730. The AMD part uses AMD Socket FP7, and the Intel part uses Intel Socket 1700. The market segment is recorded as Mobile for the AMD part and Desktop for the Intel part. Neither processor has an unlocked multiplier.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 9 273PE has 12 cores and 24 threads. The AMD Ryzen 5 PRO 8645HS has 6 cores and 12 threads. The Intel part has exactly twice the core count and twice the thread count.

Q: Which processor is faster in single-threaded PassMark performance?

A: The AMD Ryzen 5 PRO 8645HS scores 3858 in PassMark single-thread, while the Intel Core 9 273PE scores 3650. The AMD part is 5.7% ahead in this specific test.

Q: How large is the gap in Cinebench R23 multicore?

A: The Intel Core 9 273PE scores 31288 in Cinebench R23 multicore, while the AMD Ryzen 5 PRO 8645HS scores 19742. The Intel part is 36.9% ahead.

Q: What is the memory bandwidth of both processors?

A: Both processors have a recorded memory bandwidth of 89.6 GB/s and use a dual-channel memory bus. The AMD part supports DDR5 only, while the Intel part supports DDR4 and DDR5. Both support ECC memory.

Q: Which processor uses a smaller manufacturing process?

A: The AMD Ryzen 5 PRO 8645HS uses a 4 nm process node from TSMC. The Intel Core 9 273PE uses a 10 nm process node from Intel.

Q: What are the integrated graphics solutions?

A: The AMD Ryzen 5 PRO 8645HS uses a Radeon 760M. The Intel Core 9 273PE uses UHD Graphics 730.

Head-to-Head Benchmarks

The Intel Core 9 273PE wins every Cinebench test in the database. In Cinebench R15 multicore, Intel scores 3153 against AMD's 1989, a 36.9% delta. In Cinebench R15 single-core, Intel scores 445 against AMD's 280, a 37.1% delta. The pattern repeats in Cinebench R20: multicore is 13140 versus 8291 (36.9% delta), and single-core is 1855 versus 1170 (36.9% delta). Cinebench R23 continues the trend: multicore is 31288 versus 19742 (36.9% delta), and single-core is 4417 versus 2787 (36.9% delta). The consistency of the 36.9% margin across all Cinebench versions suggests a fixed architectural advantage that scales linearly with the workload.

The PassMark suite shows a wider range of margins. The largest Intel win is in find prime numbers, where Intel scores 203 against AMD's 73, a 64% delta. This test is highly sensitive to integer throughput and core count, both of which favor the Intel part. PassMark physics shows Intel at 3120 versus AMD's 1208, a 61.3% delta. Floating-point math shows Intel at 107884 versus 45481, a 57.8% delta. Integer math shows Intel at 139410 versus 72740, a 47.8% delta.

The middle tier of PassMark results includes multithread, where Intel scores 36810 versus AMD's 23569, a 36% delta. Data compression shows Intel at 405885 versus 265826, a 34.5% delta. Data encryption shows Intel at 22719 versus 17387, a 23.5% delta. Random string sorting shows Intel at 45098 versus 35472, a 21.3% delta. Extended instructions show the narrowest Intel win in PassMark at 24630 versus 21212, a 13.9% delta.

The single AMD win in PassMark single-thread is the sole reversal in the entire head-to-head set. AMD scores 3858 against Intel's 3650, a 5.7% delta in AMD's favor. The same result appears twice in the database under two test names (passmark_single_thread and passmark_singlethread), both with identical scores. This is the only recorded benchmark where the AMD Ryzen 5 PRO 8645HS outperforms the Intel Core 9 273PE.

The overall average benchmark score reinforces the head-to-head results. The Intel Core 9 273PE has an average score of 49845, while the AMD Ryzen 5 PRO 8645HS has an average score of 30879. The Intel part's nearest rivals in the database are the AMD Ryzen AI Max+ 388 (0.1% delta), the Intel Core i5-14600KF (0.9% delta), the Intel Core i9-13980HX (1.1% delta in the other direction), and the AMD Ryzen AI 9 HX PRO 370 (1.2% delta in the other direction). The AMD part's nearest rivals are the AMD Ryzen 7 8700F (0.4% delta), the Intel Core i7-13700TE (0.5% delta in the other direction), the AMD Ryzen 9 8945HS (0.6% delta in the other direction), and the Intel Core i7-12700F (0.6% delta in the other direction). These rival comparisons place the Intel Core 9 273PE in a higher performance tier, consistent with its 90th percentile ranking versus the AMD's 82nd percentile.