AMD Ryzen AI 5 340 vs Intel Core i9-11900KF Comparison

The Intel Core i9-11900KF and the AMD Ryzen AI 5 340 represent two distinct approaches to processing, separated by four years of architectural evolution and targeting entirely different market segments. The data shows a decisive victory for the Intel part in raw throughput, but the AMD chip demonstrates notable efficiency in specific single-threaded and integer workloads. This analysis breaks down the benchmark results to determine which processor is suited for which task, based strictly on the provided performance metrics.

Where Each One Wins

The performance split is heavily tilted toward the Intel Core i9-11900KF, which secures 12 of the 17 head-to-head benchmark wins. The Intel processor’s dominance is most pronounced in multi-threaded and compute-intensive tasks. In Cinebench R23 multi-core, the i9-11900KF scores 20,838 against the Ryzen AI 5 340’s 12,532, representing a massive 66.3% advantage. This pattern repeats across other heavily threaded workloads: PassMark Multi-Thread shows a 26.7% lead for Intel (24,708 vs. 19,506), and Geekbench Multi-Core shows a 19.5% lead (10,953 vs. 9,165). The Intel chip also wins decisively in memory-sensitive and data-processing tasks, including PassMark Data Compression (41.7% lead), Data Encryption (36.2% lead), and Random String Sorting (49.7% lead). Its advantage in Floating Point Math (31.7%) and Integer Math (41.1%) further cements its position as the compute powerhouse.

The AMD Ryzen AI 5 340, conversely, wins in exactly five benchmarks, and its victories are concentrated in specific areas. Its most significant win is in Geekbench Single-Core, where it scores 2,140 against Intel’s 2,062, a 3.6% margin. It also takes PassMark Single-Thread (3,683 vs. 3,527, a 4.2% lead), and PassMark Find Prime Numbers (72 vs. 66, an 8.3% lead). The AMD chip also wins PassMark Physics (1,095 vs. 1,034, a 5.6% lead). These wins point to a processor that is more efficient in lightly-threaded, latency-sensitive, or specific integer-based tasks, despite having fewer cores and a lower clock speed. For workloads like physics simulations, the Zen 5 architecture appears to execute the instruction stream more efficiently.

The Verdict

Based on the data, the Intel Core i9-11900KF is the clear choice for users whose primary workloads are multi-threaded content creation, data processing, or any task that scales with core count and thread count. Its 66.3% lead in Cinebench R23 multi-core and 41.7% lead in data compression are not marginal; they are transformative for rendering or batch processing. For a desktop user building a system for heavy productivity, the i9-11900KF is the superior option, despite being an older, end-of-life product.

The AMD Ryzen AI 5 340 is the pick for scenarios where single-thread responsiveness and power efficiency are paramount. Its wins in Geekbench Single-Core and PassMark Single-Thread, though slim, indicate a more modern architecture that is faster per clock. As a 28W mobile part, it is designed for laptops where sustained multi-core performance is throttled by thermal limits, and its single-thread wins suggest snappy application launches and responsive everyday computing. The data does not support choosing the Ryzen for multi-threaded rendering, but for a portable, active device where battery life and low heat are critical, its performance profile is more appropriate.

Head-to-Head Benchmarks

The largest single victory for the Intel Core i9-11900KF is in Cinebench R23 Multi-Core, where its score of 20,838 dwarfs the AMD Ryzen AI 5 340’s 12,532. The 66.3% delta is the most substantial gap in the entire dataset and highlights the Intel chip’s advantage in heavily parallelized rendering workloads. The Intel processor also shows a significant 53.5% lead in Cinebench R23 Single-Core (2,941 vs. 1,915.5), which is surprising given the AMD chip’s win in Geekbench Single-Core. This discrepancy suggests the Cinebench workload is more sensitive to Intel’s higher boost clock of 5.30 GHz, whereas Geekbench may favor the AMD chip’s architectural efficiency.

Other notable Intel wins include PassMark Random String Sorting (37,383 vs. 24,970, a 49.7% delta) and PassMark Integer Math (89,023 vs. 63,078, a 41.1% delta). These results indicate that the Intel processor is significantly stronger in data manipulation and general arithmetic operations. In contrast, the AMD Ryzen AI 5 340’s largest win is only 8.3% in PassMark Find Prime Numbers (72 vs. 66). While its other wins (Geekbench Single-Core, PassMark Single-Thread, PassMark Physics) are consistent, they are all single-digit percentage margins. The data shows Intel winning by large double-digit margins across the board, while AMD wins by slim margins in a few specific tests. The weighted average benchmark score reflects this, with Intel at 26,212 and AMD at 25,981, a difference of roughly 0.9% in favor of Intel.

FAQ

Q: Which processor is faster in multi-core rendering?

A: The Intel Core i9-11900KF is significantly faster. In Cinebench R23 Multi-Core, it scores 20,838 compared to the AMD Ryzen AI 5 340’s 12,532, giving Intel a 66.3% lead.

Q: Does the AMD Ryzen AI 5 340 win in any benchmark?

A: Yes. The AMD chip wins in Geekbench Single-Core (2,140 vs. 2,062), PassMark Single-Thread (3,683 vs. 3,527), PassMark Find Prime Numbers (72 vs. 66), and PassMark Physics (1,095 vs. 1,034).

Q: What is the difference in average benchmark scores between the two?

A: The Intel Core i9-11900KF has an average benchmark score of 26,212, while the AMD Ryzen AI 5 340 has an average of 25,981. This puts Intel ahead by approximately 0.9% in the overall average.

Q: How do their nearest rivals compare?

A: The Intel Core i9-11900KF’s closest rival is the AMD Ryzen 5 8640HS, with a delta of 0.4%. The AMD Ryzen AI 5 340’s closest rival is the Intel Core i7-14701TE, with a delta of -0.1%.

Q: Which processor has a higher single-core score in Geekbench?

A: The AMD Ryzen AI 5 340 has a higher Geekbench Single-Core score of 2,140, compared to the Intel Core i9-11900KF’s score of 2,062. This represents a 3.6% advantage for AMD.

Q: Is the Intel chip better at data compression?

A: Yes. The Intel Core i9-11900KF scores 325,688 in PassMark Data Compression, while the AMD Ryzen AI 5 340 scores 229,796. This is a 41.7% advantage for Intel.

Architecture Differences

The architectural divide between these two processors is substantial. The Intel Core i9-11900KF is built on the Rocket Lake architecture using a 14 nm process node fabricated by Intel. It features 8 cores and 16 threads, with a die size of 276 mm². In contrast, the AMD Ryzen AI 5 340 uses the Zen 5 architecture (codenamed Krackan Point) on a 4 nm process node from TSMC. It has 6 cores and 12 threads, with a smaller die size of 195 mm². The AMD chip is a hybrid design, listed as "Zen 5 / Zen 5c" in its generation, indicating a mix of performance and efficiency cores.

The cache hierarchies also differ. Both have 80 KB of L1 cache per core, but the Intel chip has 512 KB of L2 cache per core, while the AMD chip has 1 MB per core. The Intel processor has a larger shared L3 cache of 16 MB, whereas the AMD processor has 8 MB of L3 cache. A key difference is the integrated graphics: the AMD Ryzen AI 5 340 includes a Radeon 840M GPU, while the Intel Core i9-11900KF has no integrated graphics (hence the "KF" designation). The AMD chip also supports different memory technologies, notably DDR5 and LPDDR5X, while the Intel chip is limited to DDR4.

Specification Differences

The specification sheets reveal several key differences. The Intel Core i9-11900KF has a base clock of 3.50 GHz and a boost clock of 5.30 GHz, while the AMD Ryzen AI 5 340 has a much lower base clock of 2.00 GHz and a boost of 4.80 GHz. The thermal design power (TDP) is drastically different: the Intel chip is rated at 125W, while the AMD chip is rated at 28W. This reflects their different market segments—the Intel part is a Desktop processor with an unlocked multiplier, while the AMD part is a Mobile processor with a locked multiplier.

The memory bus is dual-channel for both, but the memory bandwidth differs significantly: the Intel chip has 51.2 GB/s, while the AMD chip has 89.6 GB/s. The PCIe support also differs, with Intel offering Gen 4 with 20 lanes (CPU only) and AMD offering Gen 4 with 16 lanes (CPU only). The sockets are incompatible: Intel uses Socket 1200, while AMD uses Socket FP8. The production statuses are also opposite: the Intel chip is end-of-life, released in March 2021 with a launch MSRP of $513, while the AMD chip is active, released in January 2025. The Intel part number is SRKNF, while the AMD part number is 100-000001602.