AMD Ryzen 7 8745HX vs Intel Core Ultra 5 225T Comparison

Head-to-Head Benchmarks

The recorded data shows a clear split between these two processors, with the AMD Ryzen 7 8745HX winning 6 of the 11 shared benchmark tests and the Intel Core Ultra 5 225T taking the remaining 5. The margins, however, are not symmetrical. AMD’s victories are often decisive, while Intel’s wins are typically narrower in the Passmark suite.

The largest single delta appears in integer math, where the AMD Ryzen 7 8745HX scores 100328 against Intel’s 59543, a 68.5% advantage. This is the kind of result that shows up in general productivity workloads, where integer operations dominate. Data compression tells a similar story: AMD scores 363759 versus 233998, a 55.5% lead. Random string sorting also favors AMD heavily, with 44494 against 28774, a 54.6% delta. Extended instructions follow the same pattern, with AMD at 27638 and Intel at 20083, a 37.6% gap. Data encryption is closer but still AMD-favored: 21840 versus 18289, a 19.4% edge. The multithread Passmark score reinforces this trend, with AMD at 31517 and Intel at 25358, a 24.3% difference.

Intel’s wins are concentrated in different areas. The single-thread score favors the Core Ultra 5 225T at 4348 versus 3879, a 10.8% lead. Floating point math goes to Intel as well: 82751 against 61972, a 25.1% advantage. Prime number finding shows the largest relative Intel victory, with a score of 284 versus 159, which translates to a 44% delta in Intel’s favor. The physics test also goes to Intel, 2053 versus 1681, an 18.1% margin.

It is importantly the two single-thread entries in the database, passmark_single_thread and passmark_singlethread, report identical scores for both processors, 3879 for AMD and 4348 for Intel, so the 10.8% delta appears twice in the head-to-head table. That duplication does not change the overall picture: AMD leads in aggregate throughput and memory-heavy workloads, while Intel leads in single-core performance and certain math operations.

Where Each One Wins

The AMD Ryzen 7 8745HX is the stronger choice for parallel workloads and data manipulation. Its 24.3% multithread lead, combined with the 55.5% data compression advantage and the 68.5% integer math margin, points to a processor that sustains high throughput when all cores are engaged. Encryption work also favors AMD, with a 19.4% edge, which matters for compressed archives, database operations, and any task that spends time shuffling or transforming large blocks of data. The 54.6% random string sorting lead further supports this profile. For users running render farms, virtual machines, or content production pipelines that scale across cores, the data consistently favors the AMD part.

The Intel Core Ultra 5 225T wins where latency and single-core responsiveness dominate. The 10.8% single-thread advantage shows up in lightly threaded applications, and the 44% prime number finding lead suggests strong integer execution in a scalar context. Floating point math favors Intel by 25.1%, which could translate to better performance in scientific calculations that are not fully parallelized. The physics test, which often reflects gaming or simulation workloads, goes to Intel by 18.1%. Desktop users who prioritize snappy application launches, spreadsheet recalculations, or older games that rely on one or two threads may find the Intel part more responsive.

The benchmark profile does not show a universal winner. AMD dominates the throughput-oriented categories, Intel dominates the latency-oriented ones. The choice depends on which workload family matters more.

Architecture Differences

The two processors come from different design philosophies and different process nodes. The AMD Ryzen 7 8745HX uses the Zen 4 architecture, codename Dragon Range, built on a 5 nm process at TSMC. The Intel Core Ultra 5 225T uses the Arrow Lake architecture, codename Arrow Lake-S, built on a 3 nm process, also at TSMC. The transistor counts differ substantially: AMD integrates 6,570 million transistors on a 71 mm² die, while Intel integrates 17,800 million transistors on a 243 mm² die. That is a much larger physical chip for Intel, which reflects the different core topology and integrated blocks.

Core counts diverge as well. The AMD part has 8 cores and 16 threads, relying on simultaneous multithreading to double its thread count. The Intel part has 10 cores and 10 threads, with no SMT, so its thread count equals its core count. Despite having fewer cores, AMD still wins the multithread Passmark test by 24.3%, which indicates that its SMT implementation and higher per-core throughput compensate for the two-core deficit.

Cache layouts are different in both size and organization. AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. Intel provides 192 KB of L1 per core, 3 MB of L2 per core, and 20 MB of shared L3. The larger per-core caches on Intel help with single-threaded locality, while AMD’s larger shared L3 pool benefits workloads that share data across cores.

Clock speeds favor AMD at the top end. The base clock is 3.60 GHz versus 2.50 GHz, and the boost clock is 5.10 GHz versus 4.90 GHz. TDP ratings differ: AMD is rated at 55 watts, Intel at 65 watts, although the Intel part is a desktop chip while AMD targets mobile. Memory bandwidth goes the other way: Intel supports 102.4 GB/s, AMD 83.2 GB/s, both over dual-channel DDR5. PCIe lane counts also differ, with AMD offering 28 CPU lanes at Gen 5 and Intel offering 20 CPU lanes at Gen 5.

The integrated graphics are not comparable in positioning. AMD pairs the CPU with a Radeon 610M iGPU, while Intel includes Arc Xe-LPG Graphics with 16 execution units. The database does not provide iGPU benchmark scores, so no performance comparison is possible from the recorded data. The AMD chip uses an unlocked multiplier, while the Intel chip is locked. The AMD part ships on Socket FL1, the Intel part on Socket 1851.

FAQ

Q: Which processor has the higher boost clock?

A: The AMD Ryzen 7 8745HX boosts to 5.10 GHz, while the Intel Core Ultra 5 225T boosts to 4.90 GHz.

Q: Does the Intel Core Ultra 5 225T support multithreading?

A: No. The Intel part has 10 cores and 10 threads, meaning each core handles exactly one thread. The AMD Ryzen 7 8745HX, by contrast, has 8 cores and 16 threads.

Q: Which CPU has more L3 cache?

A: The AMD Ryzen 7 8745HX has 32 MB of shared L3 cache. The Intel Core Ultra 5 225T has 20 MB of shared L3 cache.

Q: Are both processors built by the same foundry?

A: Yes. Both use TSMC fabrication, but on different nodes. AMD uses a 5 nm process, Intel uses a 3 nm process.

Q: Which chip has the higher Passmark single-thread score?

A: The Intel Core Ultra 5 225T scores 4348 in the single-thread test, compared to 3879 for the AMD Ryzen 7 8745HX, a 10.8% difference.

Q: Which CPU supports more PCIe lanes?

A: The AMD Ryzen 7 8745HX supports 28 CPU-only Gen 5 lanes. The Intel Core Ultra 5 225T supports 20 CPU-only Gen 5 lanes.

Specification Differences

The two processors differ in nearly every fundamental specification. AMD uses 8 cores and 16 threads; Intel uses 10 cores and 10 threads. AMD’s base clock is 3.60 GHz, Intel’s is 2.50 GHz. Boost clocks are 5.10 GHz for AMD and 4.90 GHz for Intel. TDP is 55 watts for AMD and 65 watts for Intel. The socket is AMD Socket FL1 versus Intel Socket 1851. Process nodes are 5 nm for AMD and 3 nm for Intel. Transistor counts are 6,570 million versus 17,800 million, while die sizes are 71 mm² versus 243 mm².

Cache hierarchies differ at every level: L1 is 64 KB per core for AMD and 192 KB per core for Intel; L2 is 1 MB per core for AMD and 3 MB per core for Intel; L3 is 32 MB shared for AMD and 20 MB shared for Intel. Memory bandwidth is 83.2 GB/s for AMD and 102.4 GB/s for Intel, both on dual-channel DDR5. PCIe lanes are 28 for AMD and 20 for Intel, both Gen 5. Neither supports ECC memory. The AMD multiplier is unlocked, the Intel multiplier is locked. AMD’s integrated graphics are Radeon 610M; Intel’s are Arc Xe-LPG Graphics with 16 EU. The AMD part targets mobile, the Intel part targets desktop. The AMD part number is 100-000001851, the Intel part number is listed as unknown.

The Verdict

The data points to a straightforward conclusion based on workload. The AMD Ryzen 7 8745HX delivers the higher average benchmark score, 60104, and sits at the 92nd percentile of all CPUs. The Intel Core Ultra 5 225T averages 30468 and sits at the 82nd percentile. AMD’s nearest rivals in the database include the Ryzen 9 7945HX at 60099, the Core i9-14900F at 60008, and the Ryzen 9 7945HX3D at 59641, all within 0.8% of AMD’s average. Intel’s nearest rivals, such as the Core i9-11980HK at 30422 and the Ryzen 5 7640HS at 30390, cluster close to its 30468 average. That puts the AMD part in a much higher performance class overall.

For users whose work is heavily parallel, such as video encoding, 3D rendering, database compression, or any task that can use 16 threads, the AMD Ryzen 7 8745HX is the stronger pick. The 24.3% multithread lead and the 68.5% integer math advantage are decisive in those scenarios. For users who prioritize single-core responsiveness, scientific floating point, or physics-based simulations, the Intel Core Ultra 5 225T has the edge, with a 10.8% single-thread lead and a 25.1% floating point margin.

The Intel part is a desktop chip with a higher TDP and more memory bandwidth, but the AMD part still wins the aggregate throughput tests with a lower TDP. The unlocked multiplier on AMD adds flexibility for those who can tune clocks, while Intel’s locked multiplier limits adjustment. Neither chip prices into this analysis since no launch MSRP is recorded. The choice is not about which is universally better, it is about which workload profile matches the chip’s strengths. Parallel throughput favors AMD, single-thread latency favors Intel, and the recorded averages place AMD well ahead in overall performance.