AMD Ryzen 5 PRO 7645 vs Intel Core Ultra 5 225H Comparison

Head-to-Head Benchmarks

The Intel Core Ultra 5 225H and AMD Ryzen 5 PRO 7645 split their benchmark matchups, but the nature of those wins tells a clear story. Intel takes 11 of the 17 head-to-head tests, while AMD secures 6, yet the margin distribution reveals contrasting strengths.

Intel's most dominant victory comes in PassMark floating point math, where the Core Ultra 5 225H scores 86,540 against AMD's 45,202, a staggering 91.5% advantage. This is the single largest delta in the entire comparison and indicates a massive gap in FP-heavy workloads. The Intel chip also excels in data encryption, posting 21,428 versus 16,657, a 28.6% lead. PassMark physics shows a 17.5% edge (1,877 vs 1,598), and the single-thread PassMark test favors Intel by 16.6% (4,258 vs 3,652). In Cinebench R20, Intel wins both multicore and singlecore by 10.1%, with scores of 10,041 vs 9,118 and 1,417 vs 1,287 respectively. The R15 multicore test also goes to Intel by 9.6% (2,397.5 vs 2,188), and PassMark multithread shows a 10.3% Intel advantage (28,119 vs 25,489). Smaller Intel wins include find prime numbers (220 vs 198, an 11.1% margin) and extended instructions (21,915 vs 21,813, a narrow 0.5% edge).

AMD's counterpunches are concentrated in Cinebench R23, where the Ryzen 5 PRO 7645 delivers a crushing 32.6% multicore victory (21,710 vs 14,629.5) and a 35.8% singlecore win (3,065 vs 1,969). These are the largest margins in either direction across the entire test suite. AMD also takes PassMark integer math by 8.4% (74,782 vs 68,520), random string sorting by 2.6% (34,557 vs 33,654), and data compression by a slim 1% (286,298 vs 283,451). The R15 singlecore test goes to AMD by 6.3% (308 vs 288.5).

The overall average benchmark scores reflect this split. AMD's average of 32,446 places it in the 83rd percentile of all CPUs, while Intel's 31,508 average sits at the 82nd percentile. Intel's nearest rivals include the Intel Core i5-13500 at 31,510 (0% delta) and the AMD Ryzen 9 5980HX at 31,495 (0% delta), while the Ryzen 5 PRO 7645 sits closest to the AMD Ryzen 7 6800HS at 32,354 (0.3% delta) and the Intel Core i5-14400F at 32,279 (0.5% delta). The data shows two processors targeting different workload profiles: Intel leads in encryption, floating point, and general multithreading, while AMD dominates in the specific Cinebench R23 rendering workloads and integer-heavy tasks.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 5 PRO 7645 averages 32,446 across all recorded benchmarks, compared to 31,508 for the Intel Core Ultra 5 225H. AMD also holds a slightly higher percentile ranking at 83rd versus Intel's 82nd.

Q: How large is AMD's lead in Cinebench R23 multicore?

A: The Ryzen 5 PRO 7645 scores 21,710 in Cinebench R23 multicore, which is 32.6% ahead of Intel's 14,629.5. This is the largest multicore margin in the entire head-to-head comparison.

Q: Where does Intel have its biggest advantage?

A: Intel's largest win is in PassMark floating point math, where it scores 86,540 against AMD's 45,202, a 91.5% advantage. Intel also leads by 28.6% in data encryption with 21,428 versus 16,657.

Q: Do these processors have similar nearest rivals?

A: No. Intel's closest competitor is the Intel Core i5-13500 with an average score of 31,510 and a 0% delta, while AMD's nearest rival is the AMD Ryzen AI 7 PRO 360 at 32,662 with a -0.7% delta, meaning AMD's chip slightly trails that rival.

Q: Which processor wins more individual benchmark tests?

A: The Intel Core Ultra 5 225H wins 11 of the 17 head-to-head tests. The AMD Ryzen 5 PRO 7645 wins the remaining 6.

Q: What does the single-thread PassMark test show?

A: Intel leads with 4,258 versus AMD's 3,652, a 16.6% advantage. This appears twice in the benchmark data under slightly different test names but with identical scores.

Architecture Differences

The two chips come from fundamentally different design philosophies. Intel's Core Ultra 5 225H is built on Arrow Lake architecture using a 3 nm process at TSMC, while AMD's Ryzen 5 PRO 7645 uses Zen 4 architecture on a 5 nm process, also at TSMC. This makes the Intel part the more advanced node, though AMD's Raphael design compensates with a higher boost clock and different core topology.

The core counts diverge sharply. Intel packs 14 cores and 14 threads, indicating no hyperthreading, while AMD offers 6 cores and 12 threads, relying on simultaneous multithreading to double its thread count. This explains why AMD can win Cinebench R23 multicore despite having fewer physical cores: the 12 threads plus a 5.10 GHz boost clock overcome Intel's 14 physical threads at a 4.90 GHz boost. Intel's base clock of 1.70 GHz is dramatically lower than AMD's 3.80 GHz, a difference that speaks to their intended power envelopes.

Cache hierarchies also differ substantially. Intel allocates 192 KB of L1 per core and 3 MB of L2 per core, with 18 MB of shared L3. AMD counters with 64 KB of L1 per core, 1 MB of L2 per core, and a much larger 32 MB of shared L3. The larger L3 pool on AMD likely contributes to its integer math and data compression wins.

The integrated graphics differ as well. Intel pairs its chip with Arc Graphics 130T, while AMD integrates Radeon Graphics. Neither chip has a large transistor budget disclosed for Intel, but AMD's die is listed at 71 mm² with 6,570 million transistors. The socket situation is entirely different: Intel uses BGA 2049, a soldered mobile package, while AMD uses Socket AM5, a desktop-style socket. The Intel part is classified as Mobile, while AMD's is classified as Server/Workstation, despite both being active production parts.

PCIe connectivity shows another gap. Intel provides Gen 5 with 8 CPU lanes, while AMD offers Gen 5 with 24 CPU lanes. Memory support also differs: Intel supports both DDR5 and LPDDR5X with a dual-channel bus and 102.4 GB/s bandwidth, while AMD supports only DDR5 on a dual-channel bus with 83.2 GB/s bandwidth. AMD includes ECC memory support, while Intel does not. The Intel chip was released on 2025-01-12, while AMD's launch date is 2023-06-12, making Intel the newer design by roughly a year and a half.

Specification Differences

The recorded specifications show clear divergences across nearly every major category. Intel's Core Ultra 5 225H has 14 cores and 14 threads, while AMD's Ryzen 5 PRO 7645 has 6 cores and 12 threads. Base clocks are 1.70 GHz for Intel versus 3.80 GHz for AMD, and boost clocks are 4.90 GHz versus 5.10 GHz. The TDP figures differ markedly: Intel draws 28 watts, AMD draws 65 watts.

The process node favors Intel at 3 nm versus AMD's 5 nm, both from TSMC. AMD discloses 6,570 million transistors on a 71 mm² die, while Intel's transistor count and die size are not recorded. Cache configurations differ: Intel uses 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3; AMD uses 64 KB L1 per core, 1 MB L2 per core, and 32 MB shared L3.

Memory bandwidth favors Intel at 102.4 GB/s versus AMD's 83.2 GB/s, though both use dual-channel buses. Intel supports DDR5 and LPDDR5X, AMD only DDR5. ECC memory is available only on AMD. PCIe lanes: Intel has 8 Gen 5 CPU lanes, AMD has 24 Gen 5 CPU lanes. The integrated graphics are Arc Graphics 130T for Intel and Radeon Graphics for AMD. Sockets are BGA 2049 versus AM5. Intel's market segment is Mobile, AMD's is Server/Workstation. Neither chip has an unlocked multiplier, and neither has a recorded launch MSRP in the database.

The Verdict

The data points to workload-specific recommendations. The AMD Ryzen 5 PRO 7645 is the choice for Cinebench R23 rendering tasks, where its 32.6% multicore and 35.8% singlecore advantages are decisive. It also suits integer-heavy and data compression workloads, plus scenarios requiring ECC memory or 24 PCIe Gen 5 lanes. Its 65 watt TDP and AM5 socket make it a different class of part, despite the mobile classification of its rival.

The Intel Core Ultra 5 225H is the better option for floating point math, encryption, encryption-heavy tasks, and general multithreaded PassMark workloads. Its 91.5% lead in floating point math and 28.6% lead in data encryption are the standout figures, and it wins the majority of head-to-head tests overall. The 28 watt TDP, support for LPDDR5X memory, and 102.4 GB/s bandwidth position it as a more power-efficient mobile part.

For users prioritizing Cinebench R23 scores or needing ECC and abundant PCIe lanes, the AMD Ryzen 5 PRO 7645 is the data-backed pick. For those focused on encryption performance, floating point throughput, or a broader set of PassMark wins, the Intel Core Ultra 5 225H is the stronger performer. The average benchmark scores place AMD slightly ahead overall (32,446 vs 31,508), but the margin is small and the test-specific deltas are large enough that the right choice depends entirely on the intended workload.