AMD Ryzen 5 6600U vs Intel Core i9-11900F Comparison

The Intel Core i9-11900F and AMD Ryzen 5 6600U are positioned at opposite ends of the computing spectrum, yet both achieve the same 76th percentile ranking among all CPUs. The data reveals a lopsided head-to-head record: the Intel part wins all 17 shared benchmarks, with margins ranging from a modest 6.7% to a staggering 104.8%. This is not a contest of equals; it is a desktop processor with a 65W TDP against a 15W mobile chip. The core question is not which is faster, but which environment each serves best, given that the 6600U is designed for battery-powered portability while the 11900F anchors a desktop system.

Where Each One Wins

The benchmark data is unambiguous: the Intel Core i9-11900F wins every single head-to-head comparison. There is no workload category where the AMD Ryzen 5 6600U emerges victorious. However, this does not mean the 6600U lacks a purpose; rather, its wins are contextual. The 11900F dominates in raw throughput, as shown by its 104.8% lead in Cinebench R23 multi-core (18759 vs 9159.5) and its 42.3% advantage in Geekbench multi-core (9417 vs 6618). These are metrics for sustained, heavy workloads like video rendering, 3D modeling, and software compilation.

The 6600U, while losing every benchmark, demonstrates its strength through efficiency and integration, not raw scores. Its 15W TDP compared to the 11900F’s 65W TDP indicates a design philosophy focused on battery life and thermal management in thin-and-light laptops. The 6600U also includes the Radeon 660M integrated graphics, a feature entirely absent from the 11900F, which relies on a discrete GPU. In single-threaded tasks, the gap narrows considerably; the 11900F leads by only 9% in Passmark single-thread (3413 vs 3132) and by 14.2% in Cinebench R15 single-core (266 vs 233). This suggests that for everyday responsive tasks like web browsing and office applications, the 6600U is far closer in performance, making its efficiency advantage more meaningful.

Architecture Differences

The two processors embody fundamentally different design philosophies from their respective manufacturers. The Intel Core i9-11900F is built on the Rocket Lake architecture, using a 14 nm process node fabricated by Intel itself. It features 8 cores and 16 threads, with a base clock of 2.50 GHz and a boost clock of 5.20 GHz. The die size is 276 mm². In contrast, the AMD Ryzen 5 6600U uses the Zen 3+ architecture, codenamed Rembrandt, manufactured on a 6 nm process by TSMC. It has 6 cores and 12 threads, with a base clock of 2.90 GHz and a boost clock of 4.50 GHz, on a smaller 208 mm² die.

Cache configurations reveal another divergence. Both share 16 MB of shared L3 cache and 512 KB of L2 per core. However, the Intel part has a larger L1 cache at 80 KB per core, compared to 64 KB per core on the AMD. The memory support differs significantly: the 11900F uses DDR4 with dual-channel support and a memory bandwidth of 51.2 GB/s, while the 6600U supports DDR5 with dual-channel and a higher bandwidth of 76.8 GB/s. This indicates the AMD chip is designed for newer, faster memory standards, which partially compensates for its lower core count in memory-sensitive tasks. Both use PCIe Gen 4 with 20 lanes, but the Intel part is a desktop chip on Socket 1200, while the AMD is a mobile chip on Socket FP7.

FAQ

Q: How much faster is the Intel Core i9-11900F in multi-core rendering?

A: The Intel part is 104.8% faster in Cinebench R23 multi-core, scoring 18759 versus the AMD’s 9159.5. This is the largest margin in any shared benchmark, indicating a massive advantage for CPU-intensive rendering workloads.

Q: Does the AMD Ryzen 5 6600U have integrated graphics?

A: Yes, the 6600U includes the Radeon 660M integrated graphics. The Intel Core i9-11900F has no integrated graphics, requiring a separate discrete GPU for display output.

Q: What is the power consumption difference?

A: The Intel Core i9-11900F has a TDP of 65W, while the AMD Ryzen 5 6600U has a TDP of 15W. This 50W difference reflects the desktop versus mobile design targets, with the AMD chip optimized for battery life.

Q: Which processor has a higher boost clock?

A: The Intel Core i9-11900F has a higher boost clock of 5.20 GHz compared to the AMD’s 4.50 GHz. This contributes to its lead in single-threaded benchmarks, though the margin is smaller than in multi-threaded tests.

Q: Are both processors from the same generation?

A: No. The Intel is from the 11th Gen Core series (Rocket Lake), while the AMD is from the 6000 series (Zen 3+ Rembrandt). The AMD is manufactured on a more advanced 6 nm process versus Intel’s 14 nm node.

Q: What is the memory bandwidth difference?

A: The AMD Ryzen 5 6600U supports DDR5 with a memory bandwidth of 76.8 GB/s, which is 50% higher than the Intel’s DDR4 bandwidth of 51.2 GB/s. This is a key architectural advantage for the mobile chip.

Specification Differences

The two processors differ across nearly every major specification category. The Intel Core i9-11900F has 8 cores and 16 threads, while the AMD Ryzen 5 6600U has 6 cores and 12 threads. Clock speeds diverge: the Intel base is 2.50 GHz and boost is 5.20 GHz, versus the AMD base of 2.90 GHz and boost of 4.50 GHz. The TDP is a stark contrast, with Intel at 65W and AMD at 15W. The Intel uses a 14 nm process node from Intel’s own foundry, while the AMD uses a 6 nm node from TSMC. Die size is 276 mm² for Intel and 208 mm² for AMD. The L1 cache is 80 KB per core on Intel versus 64 KB per core on AMD, while L2 (512 KB per core) and L3 (16 MB shared) are identical. Memory support differs: Intel uses DDR4 with 51.2 GB/s bandwidth, AMD uses DDR5 with 76.8 GB/s. The Intel has no integrated graphics, while the AMD includes Radeon 660M. The Intel is a desktop part on Socket 1200, while the AMD is mobile on Socket FP7. The Intel is end-of-life with a launch MSRP of $422, while the AMD is active with no listed launch price.

Head-to-Head Benchmarks

The Cinebench R23 multi-core test shows the most dramatic gap: the Intel scores 18759 versus the AMD’s 9159.5, a 104.8% lead. This is the single largest delta in the entire dataset, highlighting the Intel’s superiority in heavily threaded workloads. The Geekbench multi-core test also shows a significant 42.3% advantage for Intel (9417 vs 6618), further confirming its multi-threaded dominance. In Passmark integer math, Intel leads by 35.6% (83718 vs 61723), and in floating-point math by 42.9% (48562 vs 33991). These are core computational tasks where the Intel’s higher core count and clock speeds provide a clear edge.

The margins narrow considerably in single-threaded tests. In Cinebench R23 single-core, Intel wins by 81.8% (2648 vs 1456.5), which is still substantial but less than the multi-core gap. However, in Passmark single-thread, the lead shrinks to just 9% (3413 vs 3132), indicating that for lighter, single-threaded tasks, the AMD chip is much closer in performance. The Cinebench R15 tests follow a similar pattern: multi-core shows a 26.6% Intel lead (1890 vs 1493), while single-core shows a 14.2% lead (266 vs 233). The Passmark data encryption test shows the closest margin at 6.7% (13636 vs 12783), suggesting that in certain specialized workloads, the AMD’s newer architecture and DDR5 support narrow the gap significantly. The Passmark random string sorting test shows a 53.1% Intel advantage (32520 vs 21241), reinforcing the pattern of Intel dominance in most algorithmic tasks.

The Verdict

The data clearly shows that the Intel Core i9-11900F is the superior processor for raw performance, winning all 17 head-to-head benchmarks. Its 104.8% lead in Cinebench R23 multi-core and 42.3% lead in Geekbench multi-core make it the obvious choice for desktop users who need maximum compute power for rendering, encoding, or scientific computing. The 11900F is also a strong single-threaded performer, leading by 81.8% in Cinebench R23 single-core, though its Passmark single-thread lead of 9% shows that the AMD chip is competitive in lighter tasks. With its 65W TDP and requirement for a discrete GPU, the 11900F is best suited for a desktop workstation or gaming rig where power and space are not constraints.

The AMD Ryzen 5 6600U, despite losing every benchmark, is the logical choice for mobile computing. Its 15W TDP, active production status, and integrated Radeon 660M graphics make it ideal for thin-and-light laptops where battery life and portability are paramount. The 6600U’s support for DDR5 memory with 76.8 GB/s bandwidth, higher than the Intel’s 51.2 GB/s, shows forward-looking design. While it trails in multi-core performance by 104.8% in the most extreme case, its 9% deficit in Passmark single-thread suggests that everyday productivity tasks will feel nearly identical. The choice is not about which chip is faster, but which environment the user prioritizes: the 11900F for uncompromising desktop performance, or the 6600U for efficient, portable computing.