AMD Ryzen 7 8840HX vs Intel Core Ultra 5 336H Comparison

Head-to-Head Benchmarks

The recorded benchmark data splits cleanly between two very different design philosophies. The AMD Ryzen 7 8840HX wins 9 of the 13 head-to-head comparisons, while the Intel Core Ultra 5 336H takes 4. The margins, however, are not evenly distributed.

The largest single gap appears in PassMark integer math. The AMD Ryzen 7 8840HX scores 146506 against 62070 for the Intel Core Ultra 5 336H, a delta of 136 percent. That is more than double the throughput, and it drives the overall average benchmark score strongly toward the AMD part. The Ryzen 7 8840HX posts an average benchmark score of 71797, while the Core Ultra 5 336H sits at 34485. The AMD chip also ranks in the 94th percentile of all CPUs in the database, compared to the 84th percentile for the Intel part.

Data compression shows a similarly decisive AMD advantage. The Ryzen 7 8840HX records 496427 in PassMark data compression, versus 280340 for the Core Ultra 5 336H, a 77.1 percent lead. Extended instructions follow the same pattern: 36527 for AMD against 24542 for Intel, a 48.8 percent edge. Random string sorting goes to AMD at 57971 versus 34402, a 68.5 percent margin. Data encryption also favors the Ryzen 7 8840HX, 29919 against 21291, a 40.5 percent difference.

The multi-threaded results reinforce the pattern. In Cinebench R23 multi-core, the AMD Ryzen 7 8840HX scores 25265, while the Intel Core Ultra 5 336H scores 23991, a 5.3 percent lead. PassMark multithread shows a larger gap: 41732 for AMD versus 28545 for Intel, a 46.2 percent delta. Floating point math is closer, 86747 against 82415, a 5.3 percent advantage for AMD. Even prime number finding, a narrow test, goes to AMD at 304 versus 299, a 1.7 percent margin.

The Intel Core Ultra 5 336H wins its own categories, and it wins them by notable margins in the single-core domain. Cinebench R23 single-core is the standout: Intel scores 3387, AMD scores 1857, a 45.2 percent gap in favor of the Core Ultra 5 336H. That is the largest single-core differential in the dataset. PassMark single-thread is far closer: 4013 for Intel versus 3958 for AMD, a 1.4 percent edge. The physics test also goes to Intel, 2682 against 2185, an 18.5 percent advantage.

The nearest rival data puts each processor in context. The Ryzen 7 8840HX sits adjacent to desktop and server parts: Intel Core Ultra 7 265KF at 71910 average score (0.2 percent behind), Intel Xeon Platinum 8270 at 71370 (0.6 percent ahead of the Ryzen), and Intel Xeon 6517P at 72350 (0.8 percent behind). The Core Ultra 5 336H, by contrast, competes with older mobile HX parts and desktop chips: Intel Core i7-13700HX at 34554 (0.2 percent behind), Intel Core i5-13450HX at 34333 (0.4 percent ahead), AMD Ryzen 7 3700X at 34260 (0.7 percent ahead), and AMD Ryzen AI 7 350 at 34222 (0.8 percent ahead). The average score delta between the two head-to-head CPUs is roughly two to one, which aligns with the 136 percent integer math blowout.

The Verdict

The data indicates two processors aimed at different priorities within mobile computing. The AMD Ryzen 7 8840HX is the stronger multi-threaded part across nearly every measured workload. Its 24 threads, enabled by 12 cores with simultaneous multithreading, deliver a 5.3 percent win in Cinebench R23 multi-core and a 46.2 percent win in PassMark multithread. In integer-heavy tasks, the gap becomes extreme. The 136 percent integer math lead and 77.1 percent data compression lead suggest workloads that hammer arithmetic logic units and memory subsystems will favor the AMD chip decisively.

The Intel Core Ultra 5 336H is the faster single-core part, but only decisively in Cinebench R23 single-core. The 45.2 percent lead there is substantial, yet PassMark single-thread shows only a 1.4 percent margin. That discrepancy matters. The Cinebench R23 single-core result points to a strong per-core architecture, but the PassMark single-thread result tempers expectations. The Intel part also wins the physics test by 18.5 percent, which is an outlier relative to its other wins.

The average benchmark score tells the broader story: 71797 for AMD versus 34485 for Intel. The percentile ranking, 94th versus 84th, confirms that the Ryzen 7 8840HX occupies a higher tier in the database. The nearest rivals for each part reinforce this separation. The AMD chip trades blows with desktop-class Xeon and Core Ultra 7 parts. The Intel chip sits alongside last-generation mobile HX processors and desktop Ryzen 7 3700X. The data does not suggest these are direct competitors in the same performance class; the Ryzen 7 8840HX is simply the faster processor in aggregate.

Where Each One Wins

The AMD Ryzen 7 8840HX wins in productivity and computation-heavy scenarios. Data compression, encryption, extended instruction throughput, random string sorting, integer math, and multithreaded rendering all fall to the AMD chip. The 46.2 percent multithread lead and 77.1 percent compression lead indicate that content creation, database operations, and parallel compilation workloads will run substantially faster on the Ryzen 7 8840HX. The 48.8 percent extended instructions advantage suggests vectorized and cryptographic code also prefers the AMD architecture.

The Intel Core Ultra 5 336H wins in single-core responsiveness and physics simulation. The 45.2 percent Cinebench R23 single-core lead is the strongest argument for the Intel part, though the PassMark single-thread margin of 1.4 percent is far less convincing. The 18.5 percent physics win is notable, but physics in PassMark often reflects a mix of single-threaded and multi-threaded behavior, and the Intel part does not dominate multithreaded tests. The Intel chip also carries a 25 watt TDP versus 55 watts for the AMD part, which suggests it may fit in thinner chassis, but the database does not include thermal or battery measurements to confirm real-world behavior.

FAQ

Q: Which CPU has the higher Cinebench R23 multi-core score?

A: The AMD Ryzen 7 8840HX scores 25265, while the Intel Core Ultra 5 336H scores 23991, a 5.3 percent advantage for AMD.

Q: How large is the single-core gap in Cinebench R23?

A: The Intel Core Ultra 5 336H scores 3387, and the AMD Ryzen 7 8840HX scores 1857, giving Intel a 45.2 percent lead.

Q: Which processor has better integer math performance?

A: The AMD Ryzen 7 8840HX scores 146506 in PassMark integer math, compared to 62070 for the Intel Core Ultra 5 336H, a 136 percent advantage.

Q: How do the two CPUs compare in average benchmark score?

A: The AMD Ryzen 7 8840HX has an average benchmark score of 71797, while the Intel Core Ultra 5 336H has 34485.

Q: What are the percentile rankings for each CPU?

A: The AMD Ryzen 7 8840HX ranks in the 94th percentile of all CPUs, and the Intel Core Ultra 5 336H ranks in the 84th percentile.

Q: Which CPU wins the PassMark physics test?

A: The Intel Core Ultra 5 336H scores 2682, and the AMD Ryzen 7 8840HX scores 2185, an 18.5 percent win for Intel.

Architecture Differences

The two processors come from different manufacturing and design lineages. The AMD Ryzen 7 8840HX uses Zen 4 architecture on the Dragon Range codename, built on a 5 nm process at TSMC. The Intel Core Ultra 5 336H uses Panther Lake architecture on a 3 nm process at Intel's own foundry. The process node difference is significant, but the architectural differences run deeper.

The AMD part is a 12-core, 24-thread design, indicating simultaneous multithreading is enabled. The Intel part has 16 cores and 16 threads, meaning it does not use hyper-threading. Core counts favor Intel, but thread counts favor AMD. The cache hierarchy also differs. The AMD Ryzen 7 8840HX has 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The Intel Core Ultra 5 336H has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The AMD L3 cache is more than three times larger, which helps explain its strong data compression and integer math results.

Clock speeds tell a mixed story. The AMD part has a 2.90 GHz base clock and a 5.10 GHz boost clock. The Intel part has a 1.90 GHz base clock and a 4.60 GHz boost clock. The AMD chip boosts higher, but the Intel chip has a much lower base clock, suggesting different thermal design targets. The AMD part has a 55 watt TDP, and the Intel part has a 25 watt TDP. The Intel chip draws less power at the package level, which is consistent with its lower base clock and 3 nm process.

Memory support differs as well. The AMD Ryzen 7 8840HX supports DDR5 on a dual-channel bus with 83.2 GB/s bandwidth. The Intel Core Ultra 5 336H supports DDR5 and LPDDR5X on a dual-channel bus with 115.2 GB/s bandwidth. The Intel part has a higher theoretical memory bandwidth. PCIe connectivity also differs: the AMD chip supports Gen 5 with 28 CPU lanes, while the Intel chip supports Gen 5 with 12 CPU lanes. The AMD part offers more expansion lanes for discrete GPUs or storage.

The integrated graphics differ. The AMD chip uses Radeon 610M, and the Intel chip uses Intel Xe3 Graphics. The database does not include iGPU benchmark scores, so no performance comparison is possible. The AMD part has an unlocked multiplier, while the Intel part is locked. The AMD part also has a larger transistor count at 13,140 million and a die size of 2x 71 mm², while the Intel part has no transistor or die size data recorded.

Specification Differences

The two CPUs differ across several specification fields. The AMD Ryzen 7 8840HX has 12 cores and 24 threads, while the Intel Core Ultra 5 336H has 16 cores and 16 threads. Base clocks are 2.90 GHz for AMD and 1.90 GHz for Intel. Boost clocks are 5.10 GHz for AMD and 4.60 GHz for Intel. TDP is 55 watts for AMD and 25 watts for Intel.

The AMD part uses AMD Socket FL1, and the Intel part uses Intel BGA 2540. The AMD architecture is Zen 4 with the Dragon Range codename, and the Intel architecture is Panther Lake. The process node is 5 nm at TSMC for AMD, and 3 nm at Intel for the Core Ultra 5 336H.

Cache configurations diverge. AMD provides 64 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. Intel provides 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3. Memory support shows AMD with DDR5 only, while Intel supports DDR5 and LPDDR5X. Memory bandwidth is 83.2 GB/s for AMD and 115.2 GB/s for Intel. Both use dual-channel buses, and neither supports ECC memory.

PCIe lanes favor AMD at 28 Gen 5 lanes versus 12 Gen 5 lanes for Intel. Integrated graphics are Radeon 610M on the AMD side and Intel Xe3 Graphics on the Intel side. The AMD multiplier is unlocked, while the Intel multiplier is locked. Release dates differ: the AMD Ryzen 7 8840HX was released on 2025-04-22, and the Intel Core Ultra 5 336H on 2026-01-04. Neither part has a recorded launch MSRP.