AMD Ryzen 5 6600H vs AMD Ryzen AI 5 340 Comparison

FAQ

Q: Which processor has the higher boost clock?

A: The AMD Ryzen AI 5 340 boosts to 4.80 GHz, while the AMD Ryzen 5 6600H boosts to 4.50 GHz. The AI 5 340 also has a lower base clock at 2.00 GHz compared to 3.30 GHz for the 6600H.

Q: How do the two chips compare in Cinebench R23 multi-core performance?

A: The AMD Ryzen AI 5 340 scores 12,532 points versus 10,322 points for the AMD Ryzen 5 6600H, a 21.4% advantage for the newer part.

Q: Does the AMD Ryzen 5 6600H win any benchmark categories?

A: Yes. The 6600H wins in PassMark data encryption (14,277 vs 11,470, a 19.7% edge), PassMark integer math (64,927 vs 63,078, a 2.8% edge), and PassMark data compression (229,879 vs 229,796, a negligible 0% delta).

Q: What are the process node differences?

A: The Ryzen AI 5 340 is built on TSMC's 4 nm node with a 195 mm² die. The Ryzen 5 6600H uses TSMC's 6 nm node with a 208 mm² die.

Q: Which processor has more L3 cache?

A: The AMD Ryzen 5 6600H has 16 MB of shared L3 cache. The AMD Ryzen AI 5 340 has 8 MB of L3 cache.

Q: What are the TDP ratings for each chip?

A: The Ryzen AI 5 340 has a 28 W TDP. The Ryzen 5 6600H has a 45 W TDP.

Architecture Differences

The AMD Ryzen AI 5 340 and AMD Ryzen 5 6600H represent two distinct generations of AMD mobile silicon. The AI 5 340 is based on the Zen 5 architecture under the Krackan Point codename, part of the Ryzen AI 300 generation that mixes Zen 5 and Zen 5c cores. The 6600H uses the older Zen 3+ architecture under the Rembrandt codename, from the Ryzen 5 6000 series. Both chips feature 6 cores and 12 threads, but the underlying designs differ substantially.

The manufacturing process is a clear dividing line. The AI 5 340 is fabricated on TSMC's 4 nm node with a die size of 195 mm². The 6600H uses TSMC's 6 nm process and has a slightly larger die at 208 mm². Despite the smaller die, the AI 5 340 packs more per-core cache: 80 KB of L1 and 1 MB of L2 per core, compared to 64 KB of L1 and 512 KB of L2 per core on the 6600H. The L3 situation is reversed, however, with the 6600H offering 16 MB of shared L3 against 8 MB on the AI 5 340.

Memory support also diverges. The AI 5 340 supports both DDR5 and LPDDR5X memory across a dual-channel bus, with a peak memory bandwidth of 89.6 GB/s. The 6600H supports only DDR5 on a dual-channel bus, with 76.8 GB/s of memory bandwidth. The integrated graphics differ as well: the AI 5 340 carries a Radeon 840M, while the 6600H carries a Radeon 660M.

The socket and PCIe configurations are different too. The AI 5 340 uses AMD Socket FP8 with PCIe Gen 4 and 16 lanes from the CPU. The 6600H uses AMD Socket FP7 with PCIe Gen 4 and 20 lanes from the CPU. Power envelopes are another major difference, with the AI 5 340 rated at 28 W TDP and the 6600H rated at 45 W TDP. Neither chip has an unlocked multiplier, and both are currently marked as active production parts. The AI 5 340 has a release date of January 5, 2025, while the 6600H has no recorded release date in the database.

Head-to-Head Benchmarks

The benchmark data shows a clear overall winner: the AMD Ryzen AI 5 340 takes 14 of the 17 recorded head-to-head comparisons, while the AMD Ryzen 5 6600H wins 3. The scoreboard is lopsided, but the magnitude of each victory matters for real-world interpretation.

The AI 5 340's biggest wins come in single-threaded and lightly threaded workloads. In Geekbench single-core, it scores 2,140 against 1,566 for the 6600H, a 36.7% lead. Cinebench R23 single-core shows a 31.4% advantage (1,915.5 vs 1,458). PassMark single-thread adds a 15.9% win (3,683 vs 3,178). These results align with the architectural gap: Zen 5 delivers substantially higher instructions per clock than Zen 3+.

Multi-threaded performance also favors the AI 5 340, though by varying margins. Geekbench multi-core shows 9,165 versus 7,444, a 23.1% lead. Cinebench R23 multi-core gives 12,532 versus 10,322, a 21.4% advantage. Cinebench R15 multi-core is closer at 13.9% (1,915 vs 1,681.5). PassMark physics shows a 22.9% gap (1,095 vs 891). PassMark multithread is a more modest 4.5% win (19,506 vs 18,669). PassMark random string sorting also lands at 4.5% (24,970 vs 23,888).

The remaining AI 5 340 wins include PassMark find prime numbers (72 vs 52, a 38.5% lead), PassMark floating point math (39,967 vs 36,796, an 8.6% lead), PassMark extended instructions (16,440 vs 15,903, a 3.4% lead), and Cinebench R15 single-core (242.6 vs 234, a 3.7% lead).

The 6600H's three wins are worth examining. The largest is PassMark data encryption: 14,277 versus 11,470, a 19.7% margin in favor of the older chip. PassMark integer math goes to the 6600H by 2.8% (64,927 vs 63,078). PassMark data compression is effectively a tie, with the 6600H scoring 229,879 against 229,796 for the AI 5 340, a delta of 0%. These wins suggest the 6600H retains some strengths in specific arithmetic and cryptography-style workloads, despite losing the majority of tests.

Specification Differences

The two processors differ across nearly every major specification category, with the exception of core count, thread count, manufacturer, foundry, memory bus width, ECC support, market segment, production status, and multiplier unlock status.

The AMD Ryzen AI 5 340 has a base clock of 2.00 GHz and a boost clock of 4.80 GHz. The AMD Ryzen 5 6600H has a base clock of 3.30 GHz and a boost clock of 4.50 GHz. TDP is 28 W for the AI 5 340 and 45 W for the 6600H. The AI 5 340 uses Socket FP8, while the 6600H uses Socket FP7. Architecture is Zen 5 for the AI 5 340 and Zen 3+ for the 6600H. Codename is Krackan Point versus Rembrandt. Process node is 4 nm versus 6 nm, both from TSMC. Die size is 195 mm² for the AI 5 340 and 208 mm² for the 6600H.

Cache layouts differ: the AI 5 340 has 80 KB L1 per core and 1 MB L2 per core with 8 MB L3, while the 6600H has 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3. Memory support is DDR5 and LPDDR5X for the AI 5 340 versus DDR5 only for the 6600H. Memory bandwidth is 89.6 GB/s versus 76.8 GB/s. PCIe is Gen 4 with 16 lanes for the AI 5 340 and Gen 4 with 20 lanes for the 6600H. Integrated graphics are Radeon 840M for the AI 5 340 and Radeon 660M for the 6600H. The AI 5 340 has a release date of January 5, 2025; the 6600H has none recorded. Part numbers also differ.

The Verdict

The benchmark data points to the AMD Ryzen AI 5 340 as the stronger processor in the majority of measured workloads. Its 14 wins out of 17 head-to-head comparisons, combined with a 78th percentile ranking among all CPUs, make it the more versatile choice for general computing. The AI 5 340 leads by double digits in several important tests: 36.7% in Geekbench single-core, 31.4% in Cinebench R23 single-core, 23.1% in Geekbench multi-core, and 21.4% in Cinebench R23 multi-core. These are not marginal differences; they represent a generational leap in both single-threaded and multithreaded capability.

The AMD Ryzen 5 6600H is not without merit. It wins in data encryption and integer math, and its data compression score is essentially identical to the AI 5 340. For workloads that rely heavily on encryption or integer arithmetic, the 6600H can hold its own. However, the overall average benchmark score favors the AI 5 340 at 25,981 versus 25,550 for the 6600H. The 6600H also has a higher TDP at 45 W, which suggests it may consume more power to achieve its results, though the database does not record direct power consumption figures.

Users who prioritize raw performance across a broad range of applications should select the AI 5 340. Users with specific workloads centered on encryption or integer-heavy tasks may find the 6600H adequate, but the data does not support choosing it as a general-purpose upgrade.

Where Each One Wins

The AMD Ryzen AI 5 340 wins in the following categories: Cinebench R15 multi-core (13.9%), Cinebench R15 single-core (3.7%), Cinebench R23 multi-core (21.4%), Cinebench R23 single-core (31.4%), Geekbench multi-core (23.1%), Geekbench single-core (36.7%), PassMark extended instructions (3.4%), PassMark find prime numbers (38.5%), PassMark floating point math (8.6%), PassMark multithread (4.5%), PassMark physics (22.9%), PassMark random string sorting (4.5%), PassMark single-thread (15.9%), and PassMark singlethread (15.9%). This makes it the clear choice for productivity, content creation, development, and any workload that benefits from strong single-core performance.

The AMD Ryzen 5 6600H wins in PassMark data compression (0% delta), PassMark data encryption (19.7%), and PassMark integer math (2.8%). These wins point to specific niches: encryption-heavy tasks such as VPNs, secure communications, or database encryption, and integer arithmetic workloads such as certain financial or scientific computations. The data compression result is effectively a tie, so the 6600H does not offer a meaningful advantage there despite the recorded win.

For anyone weighing the two, the AI 5 340 is the more balanced processor with a broader set of strengths. The 6600H should only be considered if the workload is dominated by the three categories it wins, particularly encryption, where its 19.7% advantage is substantial.