AMD Ryzen 7 8840HX vs AMD Ryzen AI 7 PRO 450 Comparison

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 7 8840HX records an average benchmark score of 71797, while the AMD Ryzen AI 7 PRO 450 records 37093. The 8840HX sits at the 94th percentile of all CPUs, compared to the 85th percentile for the AI 7 PRO 450.

Q: How large is the multi-core performance gap between the two?

A: In Cinebench R23 multi-core, the Ryzen 7 8840HX scores 25265 versus 16054 for the AI 7 PRO 450, a 57.4% delta in favor of the 8840HX.

Q: Does the Ryzen AI 7 PRO 450 win any benchmark?

A: Yes, it wins Cinebench R23 single-core with a score of 2010 versus 1857 for the 8840HX, a 7.6% advantage. The 8840HX wins the other 12 recorded head-to-head tests.

Q: What are the core and thread counts for each processor?

A: The Ryzen 7 8840HX has 12 cores and 24 threads. The Ryzen AI 7 PRO 450 has 8 cores and 16 threads.

Q: Which processor supports ECC memory?

A: The AMD Ryzen AI 7 PRO 450 supports ECC memory. The AMD Ryzen 7 8840HX does not list ECC memory support.

Q: What process nodes are used by these two chips?

A: The Ryzen 7 8840HX is built on TSMC's 5 nm process, while the Ryzen AI 7 PRO 450 uses TSMC's 4 nm process.

The Verdict

The recorded benchmark data draws a clear split. The AMD Ryzen 7 8840HX is the multi-threaded performance leader, winning 12 of 13 head-to-head tests. Its 12 cores and 24 threads, combined with a 55 W TDP, deliver scores that place it at the 94th percentile of all CPUs. The data shows a 57.4% lead over the AI 7 PRO 450 in Cinebench R23 multi-core and a 100.5% lead in PassMark data encryption. For workloads that scale across cores, rendering, compression, encryption, or heavy math, the 8840HX is the clear choice from the measurements.

The AMD Ryzen AI 7 PRO 450, with 8 cores and 16 threads at a 28 W TDP, takes the single-core crown in Cinebench R23. Its score of 2010 beats the 8840HX by 7.6%. It also matches the 8840HX in PassMark single-thread tests, with scores of 3955 and 3958 respectively, a 0.1% difference. The AI 7 PRO 450 sits at the 85th percentile of all CPUs, and its nearest rivals include the Intel Core i9-12900T and the AMD Ryzen 7 7735H, each within 0.2% of its average score.

The 8840HX belongs in systems where sustained multi-core throughput matters most. The AI 7 PRO 450 suits lighter, more power-conscious designs where single-core responsiveness and a lower 28 W TDP take priority. The architecture differences reinforce this: the 8840HX uses Zen 4 on a 5 nm node, while the AI 7 PRO 450 uses Zen 5 on 4 nm with a newer release date. Neither processor has a launch MSRP listed in the database, so the decision rests on benchmark scores, power envelopes, and feature sets.

Head-to-Head Benchmarks

The Ryzen 7 8840HX dominates the multi-threaded and data-intensive workloads. In Cinebench R23 multi-core, it scores 25265 against 16054, a 57.4% delta. PassMark integer math shows 146506 versus 86227, a 69.9% lead. Floating-point math follows a similar pattern: 86747 versus 52971, a 63.8% advantage. The 8840HX also leads in PassMark multithread at 41732 versus 24779, a 68.4% delta.

Data compression and encryption show the largest gaps. The 8840HX scores 496427 in data compression, 68.7% ahead of the AI 7 PRO 450's 294298. In data encryption, the 8840HX hits 29919 versus 14925, a 100.5% lead. Extended instructions favor the 8840HX at 36527 versus 20778, a 75.8% delta. Random string sorting shows a 79.2% advantage for the 8840HX, with scores of 57971 and 32344. Prime number finding produces the most lopsided result: 304 versus 84, a 261.9% delta. Physics calculations follow with 2185 versus 1337, a 63.4% lead.

The AI 7 PRO 450's only head-to-head win comes in Cinebench R23 single-core. It scores 2010 versus 1857, a 7.6% advantage. In PassMark single-thread, the two are effectively tied: 3958 for the 8840HX and 3955 for the AI 7 PRO 450, a 0.1% delta. The database records the 8840HX as the winner in that test, but the margin is negligible.

The average benchmark scores place the 8840HX at 71797, with nearest rivals including the Intel Core Ultra 7 265KF at 71910 and the Intel Xeon 6724P at 72396. The AI 7 PRO 450 averages 37093, with the Intel Core i9-12900T at 37112 and the AMD Ryzen 7 160 at 37117 as close competitors. The 8840HX sits roughly 94% above the AI 7 PRO 450 in average score, a gap driven by its core count and higher TDP.

Specification Differences

The core and thread counts differ substantially. The 8840HX provides 12 cores and 24 threads, while the AI 7 PRO 450 provides 8 cores and 16 threads. Base clocks differ, with the 8840HX at 2.90 GHz and the AI 7 PRO 450 at 2.00 GHz. Both boost to 5.10 GHz. The TDPs diverge sharply: 55 W for the 8840HX versus 28 W for the AI 7 PRO 450.

The sockets are different. The 8840HX uses AMD Socket FL1, while the AI 7 PRO 450 uses AMD Socket FP8. Memory support differs as well: the 8840HX supports DDR5, while the AI 7 PRO 450 supports DDR5 and LPDDR5X. Memory bandwidth favors the AI 7 PRO 450 at 89.6 GB/s versus 83.2 GB/s for the 8840HX. ECC memory is supported only on the AI 7 PRO 450.

PCIe generations and lane counts differ. The 8840HX offers Gen 5 with 28 lanes (CPU only), while the AI 7 PRO 450 offers Gen 4 with 16 lanes (CPU only). Integrated graphics differ: the 8840HX uses Radeon 610M, and the AI 7 PRO 450 uses Radeon 860M. The 8840HX has an unlocked multiplier; the AI 7 PRO 450 does not. Release dates differ, with the 8840HX recorded as 2025-04-22 and the AI 7 PRO 450 as 2026-01-04.

Architecture Differences

The 8840HX is built on Zen 4 architecture with the Dragon Range codename, part of the 8000 series. The AI 7 PRO 450 uses Zen 5 architecture with the Gorgon Point codename, part of the Ryzen AI PRO 400 series. The process nodes differ: 5 nm for the 8840HX and 4 nm for the AI 7 PRO 450, both from TSMC.

Cache configurations show notable differences. The 8840HX has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The AI 7 PRO 450 has 80 KB of L1 per core, 1 MB of L2 per core, and only 8 MB of L3. The 8840HX's 64 MB L3 cache is 8 times larger, which contributes to its strong performance in data-heavy workloads. Transistor counts differ: the 8840HX lists 13,140 million transistors across a die size of 2x 71 mm², while the AI 7 PRO 450 lists a die size of 195 mm² with no transistor count recorded.

The AI 7 PRO 450 uses a newer Zen 5 core design on a smaller 4 nm node, which explains its single-core advantage despite fewer cores. The 8840HX compensates with more cores, more L3 cache, and a higher TDP. The 8840HX also enables PCIe Gen 5, while the AI 7 PRO 450 stays on Gen 4. Both are mobile-segment processors with active production status.

Where Each One Wins

The Ryzen 7 8840HX wins in every multi-threaded and data-intensive category in the database. Its 12 cores and 24 threads drive Cinebench R23 multi-core to 25265, a 57.4% lead. Data encryption shows the largest percentage gap at 100.5%, reflecting the core-count advantage. Prime number finding delivers a 261.9% delta, the most extreme difference in the recorded tests. The 8840HX also leads in compression, integer math, floating-point math, multithread, physics, random string sorting, and extended instructions. The 94th percentile ranking places it among the top CPUs in the database, with nearest rivals like the Intel Core Ultra 7 265KF and Intel Xeon 6724P within 1% of its average score.

The Ryzen AI 7 PRO 450 wins Cinebench R23 single-core with 2010, a 7.6% edge over the 8840HX. This result aligns with its Zen 5 architecture and 4 nm process. The AI 7 PRO 450 also offers ECC memory support, a wider memory bandwidth at 89.6 GB/s, and support for LPDDR5X, which the 8840HX lacks. Its 28 W TDP makes it suitable for designs with tighter power budgets. The integrated Radeon 860M represents a newer graphics solution than the Radeon 610M in the 8840HX. The 85th percentile ranking places it alongside the Intel Core i9-12900T and AMD Ryzen 7 7735H, all within 0.2% of its average score.

For workloads that rely on single-core responsiveness, the AI 7 PRO 450 delivers a measurable, if modest, advantage. For everything else in the benchmark suite, the 8840HX leads by wide margins, often exceeding 60%. The choice between the two depends on whether the workload prioritizes multi-core throughput or single-core efficiency and lower power draw.