AMD Ryzen 5 6600H vs Intel Core i9-11900KF Comparison

Head-to-Head Benchmarks

The benchmark comparison between the Intel Core i9-11900KF and the AMD Ryzen 5 6600H is decisively one-sided. Across all 17 recorded head-to-head tests, the Intel part claims every victory, with no wins recorded for the AMD mobile processor.

The largest margin appears in Cinebench R23 multicore, where the Intel chip scores 20,838 against the AMD's 10,322, a delta of 101.9%. That is more than double the rendering performance. The single-core variant of the same test shows a similarly dramatic gap: 2,941 versus 1,458, a 101.7% advantage. These results indicate that the Intel Core i9-11900KF delivers roughly twice the processing throughput in both lightly threaded and fully threaded Cinebench workloads.

Geekbench multicore shows a 47.1% lead for Intel, with scores of 10,953 versus 7,444. The single-core Geekbench test narrows the gap somewhat but still favors Intel by 31.7%, at 2,062 versus 1,566. Cinebench R15 follows the same pattern: multicore at 2,100 versus 1,681.5 (24.9% ahead) and single-core at 296 versus 234 (26.5% ahead).

PassMark results reinforce the trend. The random string sorting test shows the widest PassMark margin at 56.5%, with scores of 37,383 versus 23,888. Extended instructions favor Intel by 42.8% (22,703 versus 15,903), and floating point math by 43.1% (52,640 versus 36,796). Integer math is 37.1% higher for Intel at 89,023 versus 64,927. Data compression shows a 41.7% gap (325,688 versus 229,879), while data encryption is closer at 9.4% (15,623 versus 14,277).

The smallest overall margin is in PassMark single-thread performance, where Intel scores 3,527 versus 3,178, an 11% lead. PassMark multithread shows a 32.3% gap (24,708 versus 18,669), and the physics test is 16% higher for Intel (1,034 versus 891). Prime number finding shows a 26.9% edge for Intel (66 versus 52).

The data is unambiguous: the Intel Core i9-11900KF outperforms the AMD Ryzen 5 6600H in every measured workload, with the largest advantages in heavily threaded and single-threaded rendering tasks.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i9-11900KF has an average benchmark score of 26,212, while the AMD Ryzen 5 6600H averages 25,550. Both sit at the 78th percentile among all CPUs in the database.

Q: How does the Intel chip compare to its closest rivals?

A: The Intel Core i9-11900KF is nearly tied with the AMD Ryzen 5 8540U (26,187 average, 0.1% difference) and the AMD Ryzen 5 8640HS (26,106, 0.4% ahead). It is slightly behind the AMD Ryzen 9 6900HX (26,274, 0.2% behind) and the AMD Ryzen 5 7600 (26,324, 0.4% behind).

Q: What are the closest rivals to the AMD Ryzen 5 6600H?

A: The nearest rivals include the Intel Xeon D-2752TER (25,530, 0.1% behind), the AMD Ryzen 7 5700 (25,517, 0.1% ahead), the AMD Ryzen 5 7640U (25,485, 0.3% ahead), and the AMD Ryzen 7 7730U (25,625, 0.3% behind).

Q: Which processor wins in Cinebench R23 multicore?

A: The Intel Core i9-11900KF wins decisively with a score of 20,838 versus 10,322 for the AMD Ryzen 5 6600H, representing a 101.9% advantage.

Q: Is the AMD processor competitive in any benchmark?

A: The recorded data shows no benchmark wins for the AMD Ryzen 5 6600H. Its closest result is in PassMark single-thread, where it trails by 11%, and in data encryption, where it trails by 9.4%.

Q: Do both processors support the same PCIe standard?

A: Yes, both the Intel Core i9-11900KF and the AMD Ryzen 5 6600H support PCIe Gen 4 with 20 lanes (CPU only).

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i9-11900KF uses the Rocket Lake architecture on a 14 nm process node, fabricated by Intel itself. The die size is 276 mm². It is a desktop part with 8 cores and 16 threads, based on the Core i9 generation labeled Rocket Lake-S.

The AMD Ryzen 5 6600H uses the Zen 3+ architecture, codenamed Rembrandt, on a 6 nm process node from TSMC. The die is smaller at 208 mm². This is a mobile processor with 6 cores and 12 threads, belonging to the 6000 series and the Ryzen 5 generation.

Cache configurations differ notably. The Intel chip provides 80 KB of L1 cache per core and 512 KB of L2 per core, with 16 MB of shared L3. The AMD part offers 64 KB of L1 per core and 512 KB of L2 per core, also with 16 MB of shared L3. The Intel design has a larger L1 allocation per core, while L2 and L3 capacities are identical.

Memory support diverges sharply. The Intel processor supports DDR4 memory with a dual-channel bus and a memory bandwidth of 51.2 GB/s. The AMD processor supports DDR5 memory, also dual-channel, but with a higher rated bandwidth of 76.8 GB/s. The AMD part includes integrated Radeon 660M graphics, while the Intel part has no integrated graphics, consistent with its "KF" suffix indicating a discrete-GPU requirement.

The Intel chip has an unlocked multiplier, making it suitable for overclocking. The AMD chip has a locked multiplier. The Intel processor is end-of-life in production status, while the AMD processor is active. The Intel part is a desktop segment product; the AMD part is mobile segment. The Intel chip uses Intel Socket 1200, while the AMD chip uses AMD Socket FP7.

Specification Differences

The core and thread counts differ: 8 cores and 16 threads on the Intel side versus 6 cores and 12 threads on the AMD side. Base clocks are 3.50 GHz for Intel and 3.30 GHz for AMD. Boost clocks are 5.30 GHz for Intel and 4.50 GHz for AMD. The Intel chip has a 125 W TDP, while the AMD chip is rated at 45 W, reflecting the mobile power envelope.

Process node and foundry differ as described: 14 nm Intel versus 6 nm TSMC. Die size is 276 mm² versus 208 mm². L1 cache per core is 80 KB versus 64 KB. Memory support is DDR4 versus DDR5, with corresponding bandwidth differences of 51.2 GB/s versus 76.8 GB/s. Integrated graphics are absent on the Intel part and present as Radeon 660M on the AMD part. The multiplier is unlocked on Intel and locked on AMD. Production status is end-of-life versus active. Launch MSRP for the Intel chip is $513; the AMD chip has no recorded launch MSRP. The Intel part number is SRKNF, while the AMD part number is 100-000000546100-000000562.

Where Each One Wins

The Intel Core i9-11900KF wins in every benchmark category recorded. Its largest advantages are in heavily multi-threaded workloads: Cinebench R23 multicore at 101.9% ahead and Geekbench multicore at 47.1% ahead. These results make it the clear choice for rendering, video encoding, and any application that scales across many threads. It also dominates single-threaded performance, with a 101.7% lead in Cinebench R23 single-core and a 31.7% lead in Geekbench single-core, indicating strong responsiveness in lightly threaded applications.

PassMark data compression and extended instruction workloads show Intel leading by 41.7% and 42.8% respectively, which points to advantages in archive management and SIMD-heavy code. Floating point math at 43.1% ahead and integer math at 37.1% ahead further solidify the Intel lead for computational tasks.

The AMD Ryzen 5 6600H, despite losing all head-to-head tests, does not show any workload category where it is measurably superior. Its closest margins are in data encryption (9.4% behind) and PassMark single-thread (11% behind), meaning it is relatively less disadvantaged in those areas. However, the data provides no use case where the AMD part wins outright.

For users prioritizing low power consumption, the AMD chip's 45 W TDP versus the Intel chip's 125 W TDP is a notable differentiator, but the benchmark scores do not translate that into any performance win. The AMD part also includes integrated graphics, which is an advantage for systems without a discrete GPU, but again this does not affect the recorded CPU benchmarks.

The Verdict

The benchmark data is clear: the Intel Core i9-11900KF is the superior processor in every measured performance category. With 17 wins and 0 losses in head-to-head tests, it outperforms the AMD Ryzen 5 6600H by margins ranging from 9.4% to 101.9%, depending on the workload.

The Intel chip should be chosen by anyone prioritizing raw CPU performance, especially in multi-threaded rendering, data compression, and floating point or integer math. Its unlocked multiplier and desktop socket also make it suitable for overclocking and high-performance desktop builds. The recorded launch MSRP is $513.

The AMD Ryzen 5 6600H is a mobile processor with a much lower 45 W TDP and integrated Radeon 660M graphics. It is appropriate for laptop systems where power efficiency and an iGPU matter more than peak benchmark scores. However, the data shows it cannot match the Intel part in any CPU workload measured here.

Both processors sit at the 78th percentile among all CPUs, and their average scores are close: 26,212 for Intel versus 25,550 for AMD. That overall similarity masks the lopsided head-to-head results, which favor Intel in every individual test. The AMD part's nearest rivals, such as the Intel Xeon D-2752TER and AMD Ryzen 7 5700, are all within 0.3% of its average score, indicating it is a mid-pack performer. The Intel chip's nearest rivals, including the AMD Ryzen 9 6900HX and AMD Ryzen 5 7600, are also closely matched, but the Intel part holds its own at the same percentile level.

For desktop users seeking maximum compute performance, the Intel Core i9-11900KF is the clear selection. For mobile users who need an integrated GPU and lower power draw, the AMD Ryzen 5 6600H serves that niche, but the performance gap documented in the database cannot be ignored.