AMD Ryzen 7 8745HX vs AMD Ryzen AI 7 445 Comparison

Head-to-Head Benchmarks

The benchmark data records a clean sweep for the AMD Ryzen 7 8745HX across all eleven head-to-head tests, with the largest margins appearing in integer-heavy and memory-latency-sensitive workloads. The most decisive result is in the find prime numbers test, where the 8745HX scores 159 against the Ryzen AI 7 445's 56, a delta of 183.9 percent. That workload is notoriously dependent on core count and cache hierarchy, which explains the scale of the separation.

Data encryption shows the 8745HX at 21,840 versus 10,519, a 107.6 percent advantage. This workload relies heavily on AES-NI throughput and parallel execution resources, and the 8-core Dragon Range part has a structural edge. Random string sorting follows with 44,494 against 23,488, a 89.4 percent delta. Sorting algorithms are sensitive to memory bandwidth and L3 cache capacity, both of which favor the 8745HX.

The multithreaded PassMark score lands at 31,517 for the 8745HX versus 18,115 for the Ryzen AI 7 445, a 74 percent gap. That is consistent with the core and thread count difference: 8 cores and 16 threads versus 6 cores and 12 threads. The extended instructions test shows 27,638 against 15,826, a 74.6 percent delta, indicating that the older Zen 4 architecture still delivers substantially higher throughput for AVX-class workloads in this configuration.

Integer math results are similarly lopsided: 100,328 versus 58,332, a 72 percent advantage. Physics simulation scores 1,681 versus 976, a 72.2 percent delta, and data compression comes in at 363,759 versus 215,812, a 68.6 percent margin. Floating-point math is the narrowest of the multicore tests at 57.4 percent, with 61,972 against 39,362.

Single-thread performance is the only area where the two processors are close. The 8745HX records 3,879 against 3,591, an 8 percent advantage. That is a modest lead for the older Zen 4 part at a higher boost clock, but it means the Ryzen AI 7 445 is competitive in lightly threaded tasks despite its much lower power envelope. The overall average benchmark score reinforces the hierarchy: the 8745HX averages 60,104 and sits in the 92nd percentile of all CPUs, while the Ryzen AI 7 445 averages 26,936 and ranks in the 79th percentile.

The nearest rivals for each processor further contextualize the results. The 8745HX trades blows with the AMD Ryzen 9 7945HX (0 percent delta), the Intel Core i9-14900F (0.2 percent ahead), the AMD Ryzen 9 7945HX3D (0.8 percent ahead), and the Intel Xeon Gold 6338T (0.8 percent behind). The Ryzen AI 7 445 sits alongside the Intel Core i7-1370P (0.1 percent behind), AMD Ryzen 5 7545U (0.3 percent behind), AMD Ryzen 7 5700G (0.4 percent ahead), and Intel Core i9-9900K (0.6 percent ahead). In short, the 8745HX operates in the high-end desktop replacement class, while the Ryzen AI 7 445 competes with upper-midrange mobile and older desktop parts.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 7 8745HX records an average benchmark score of 60,104, compared to 26,936 for the AMD Ryzen AI 7 445.

Q: How large is the single-thread performance gap?

A: The 8745HX scores 3,879 in the PassMark single-thread test, while the Ryzen AI 7 445 scores 3,591. That is an 8 percent advantage for the 8745HX.

Q: Does the Ryzen AI 7 445 win any head-to-head benchmark?

A: No. The recorded data shows the 8745HX winning all eleven head-to-head tests, with the Ryzen AI 7 445 recording zero wins.

Q: What is the percentile ranking difference between the two chips?

A: The 8745HX ranks in the 92nd percentile of all CPUs, while the Ryzen AI 7 445 ranks in the 79th percentile.

Q: How do the two processors compare in data compression?

A: The 8745HX scores 363,759 in PassMark data compression, against 215,812 for the Ryzen AI 7 445, a 68.6 percent difference.

Q: Which processor has the larger L3 cache?

A: The 8745HX has 32 MB of shared L3 cache, while the Ryzen AI 7 445 has 4 MB.

Architecture Differences

The two processors come from different architectural generations and target different power and performance tiers. The AMD Ryzen 7 8745HX is built on Zen 4 under the Dragon Range codename and belongs to the 8000 series. It uses an 8-core, 16-thread layout with a 5 nm process from TSMC. The Ryzen AI 7 445 is a Zen 5 part with the Gorgon Point codename and belongs to the Ryzen AI 400 series. It combines Zen 5 and Zen 5c cores in a 6-core, 12-thread configuration and uses a 4 nm process, also from TSMC.

The transistor and die size data are only recorded for the 8745HX: 6,570 million transistors on a 71 mm² die. The Ryzen AI 7 445 has no recorded transistor count or die size, so direct physical comparison is not possible from the database. The cache hierarchy differs significantly. The 8745HX provides 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. The Ryzen AI 7 445 provides 80 KB of L1 per core, 1 MB of L2 per core, but only 4 MB of L3. That 8x difference in L3 capacity is a major factor in the 8745HX's dominance in cache-sensitive workloads like prime number finding and random string sorting.

The process node difference is one generation apart: 5 nm for Zen 4 versus 4 nm for Zen 5. The newer node typically enables higher transistor density and better power efficiency, which is consistent with the Ryzen AI 7 445's lower TDP. However, the recorded benchmark data shows that the architectural efficiency gain does not overcome the core count, cache, and clock speed advantages of the 8745HX in most heavy workloads.

Memory support also differs. The 8745HX supports DDR5 only, while the Ryzen AI 7 445 supports both DDR5 and LPDDR5X. The memory bus is dual-channel for both, but the Ryzen AI 7 445 has a higher recorded memory bandwidth of 89.6 GB/s versus 83.2 GB/s for the 8745HX. ECC memory support is present on the Ryzen AI 7 445 but not on the 8745HX. PCIe connectivity differs as well: the 8745HX provides Gen 5 with 28 CPU lanes, while the Ryzen AI 7 445 provides Gen 4 with 14 CPU lanes.

The integrated graphics differ: the 8745HX uses Radeon 610M, while the Ryzen AI 7 445 uses Radeon 840M. The 8745HX has an unlocked multiplier, whereas the Ryzen AI 7 445 is locked. Socket compatibility is separate as well: the 8745HX uses AMD Socket FL1, and the Ryzen AI 7 445 uses AMD Socket FP8.

Specification Differences

The recorded specifications show a clear split between the two parts. The 8745HX has 8 cores and 16 threads, while the Ryzen AI 7 445 has 6 cores and 12 threads. Base clocks differ substantially: 3.60 GHz for the 8745HX versus 2.00 GHz for the Ryzen AI 7 445. Boost clocks are 5.10 GHz versus 4.60 GHz. The TDP rating is 55 watts for the 8745HX and 28 watts for the Ryzen AI 7 445, nearly a 2x difference in power envelope.

Cache differences are pronounced. The 8745HX has 64 KB of L1 per core, while the Ryzen AI 7 445 has 80 KB per core. Both have 1 MB of L2 per core. The L3 cache is 32 MB shared versus 4 MB, a 28 MB gap. Memory bandwidth favors the Ryzen AI 7 445 at 89.6 GB/s versus 83.2 GB/s. ECC support is present only on the Ryzen AI 7 445. PCIe generation and lane count favor the 8745HX: Gen 5 with 28 lanes versus Gen 4 with 14 lanes.

The process node is 5 nm for the 8745HX and 4 nm for the Ryzen AI 7 445. Release dates differ by about eight months: the 8745HX is dated 2025-04-22, and the Ryzen AI 7 445 is dated 2026-01-04. Neither part has a recorded launch MSRP in the database. The 8745HX has an unlocked multiplier; the Ryzen AI 7 445 does not. The part numbers are 100-000001851 for the 8745HX and 100-000001935 for the Ryzen AI 7 445.

Where Each One Wins

The AMD Ryzen 7 8745HX wins every recorded benchmark, so the use-case split is defined by the magnitude of its advantages rather than by any reversal of leadership. The largest deltas occur in prime number finding (183.9 percent), data encryption (107.6 percent), and random string sorting (89.4 percent). Any workload that stresses parallel integer throughput, large cache residency, or AES-style encryption will strongly favor the 8745HX. Its 32 MB L3 cache is particularly effective for repeated access to sizable working sets, and the 55 watt TDP allows higher sustained clocks under load.

The Ryzen AI 7 445 does not win any head-to-head test, but its profile suggests it is far more efficient per watt. The 28 watt TDP, 4 nm process, and support for LPDDR5X memory position it for thin-and-light systems where battery life and thermal limits matter more than absolute throughput. The 89.6 GB/s memory bandwidth is slightly higher than the 8745HX's 83.2 GB/s, which could slightly narrow the gap in bandwidth-bound tasks, but the recorded scores do not show that effect overcoming the core and cache deficit.

The 8 percent single-thread margin is the closest contest in the data. In single-core applications, such as legacy software or lightly threaded productivity tasks, the Ryzen AI 7 445 is within striking distance of the 8745HX. Its higher L1 cache per core (80 KB versus 64 KB) and newer Zen 5 architecture contribute to that competitive standing. The 8745HX still leads, but the gap is small enough that real-world differences would be difficult to perceive without instrumentation.

The Ryzen AI 7 445 also offers ECC memory support and a broader memory type compatibility (DDR5 and LPDDR5X), which makes it suitable for systems requiring data integrity features or low-power memory. The 8745HX counters with Gen 5 PCIe and 28 lanes, which matters for high-bandwidth expansion devices such as discrete GPUs or fast NVMe storage. Its unlocked multiplier also appeals to users who intend to push performance beyond stock settings, though the database does not record any overclocking results.

In summary, the 8745HX is the dominant choice for computationally intensive workloads that can use 8 cores, large L3 cache, and high clock speeds. The Ryzen AI 7 445 is the more power-conscious option with better memory flexibility and ECC support, but the recorded data shows it trailing in every measured performance category. The nearest rival comparisons confirm this tiering: the 8745HX sits among flagship desktop and mobile parts, while the Ryzen AI 7 445 aligns with mid-range mobile and older high-end desktop chips.