AMD Ryzen 5 PRO 6650U vs Intel Core i9-11900H Comparison

Head-to-Head Benchmarks

The benchmark data presents a lopsided contest. The Intel Core i9-11900H wins 13 of the 15 recorded head-to-head comparisons, while the AMD Ryzen 5 PRO 6650U takes only two, both in single-threaded PassMark testing. The magnitude of Intel's victories, however, varies dramatically by workload, and that distinction matters for real-world use.

The single largest gap appears in Cinebench R23 multi-core, where the Intel part scores 16772 against AMD's 8854, a 47.2% deficit for the Ryzen. This is the defining result of the comparison. The i9-11900H's eight cores and sixteen threads simply outmuscle the six-core, twelve-thread Ryzen in sustained all-core rendering work. The same pattern shows in Cinebench R15 multi-core, though the margin shrinks to 13.6% (1690 versus 1459.5). Why the R15 gap is so much smaller than R23 is not something the data explains directly, but the R23 result is the more modern and demanding test.

Single-core performance tells a more nuanced story. In Cinebench R23 single-core, Intel leads by 38.2%, scoring 2367 against 1463. That is a substantial advantage for lightly threaded workloads. In Cinebench R15 single-core, Intel's lead narrows to just 2.3% (238 versus 232.5). Yet in PassMark's single-threaded test, the AMD chip wins by a slim 1.5% margin, scoring 3149 against 3102. The Ryzen's single-core showing is inconsistent across test suites, while Intel's is consistently strong.

Integer math favors Intel by 17.6% (72882 versus 60045), and floating-point math by 24.4% (43094 versus 32571). Extended instruction throughput also goes Intel's way by 24% (16123 versus 12261). These are the kinds of workloads that benefit from higher core counts and higher boost clocks.

Memory-sensitive operations show Intel ahead as well. Random string sorting goes to Intel by 28.3% (28328 versus 20299). Data compression favors Intel by 20.5% (239366 versus 190180). Data encryption is nearly a tie: Intel scores 12232, AMD 12159, a difference of just 0.6%.

Prime number finding is a decisive Intel win at 87 versus 52, a 40.2% margin. The PassMark physics test also goes to Intel by 12.2% (953 versus 837). The overall PassMark multithread score favors Intel by 18.5% (20162 versus 16429).

The two AMD wins are identical in both recorded PassMark single-thread entries (the database lists the test twice with the same score). At 3149 versus 3102, the Ryzen edges ahead by 1.5%. That is a narrow victory, but it does indicate that for purely single-threaded desktop responsiveness, the lower-power AMD part is not embarrassed.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen 5 PRO 6650U is built on the Zen 3+ architecture, codenamed Rembrandt, and belongs to the 6000 series. It uses a 6 nm process node fabricated by TSMC. The Intel Core i9-11900H uses the Tiger Lake-H architecture from the Core 11th Gen family, built on a 10 nm node at Intel's own foundries.

Core and thread counts differ: the AMD has 6 cores and 12 threads, while the Intel has 8 cores and 16 threads. This two-core, four-thread advantage is the most obvious structural reason for Intel's multi-core dominance.

Cache layouts are quite different. AMD allocates 64 KB of L1 per core, 512 KB of L2 per core, and 16 MB of shared L3. Intel uses 80 KB of L1 per core, a much larger 1.25 MB of L2 per core, and 24 MB of shared L3. The larger Intel L3 pool likely contributes to its advantage in data-heavy workloads like compression and sorting.

Memory support diverges sharply. The AMD chip supports DDR5 memory with dual-channel operation and a theoretical bandwidth of 76.8 GB/s. The Intel chip supports DDR4, also dual-channel, with 51.2 GB/s of bandwidth. The AMD part has the higher memory bandwidth on paper, yet Intel still wins the memory-sensitive benchmarks. This suggests that raw bandwidth is not the limiting factor in these tests, or that the Intel chip's higher core count and cache size compensate.

Both processors use PCIe Gen 4 with 20 lanes from the CPU. Neither supports ECC memory. Both have integrated graphics: AMD pairs the Ryzen with Radeon 660M, Intel with UHD Graphics 750. Neither chip has an unlocked multiplier.

Power envelopes are very different. The AMD chip has a TDP of 15 watts, while the Intel chip is rated at 35 watts. That more than doubles the thermal budget for Intel, which explains much of its performance advantage but also has implications for laptop design and battery life. The AMD chip is also the newer release, appearing in the database with a release date of 2022-04-18, while Intel's dates to 2021-05-10.

The Intel chip carries a launch MSRP of $546. The AMD chip has no launch MSRP recorded in the database. The AMD processor remains in active production, while the Intel part is listed as end-of-life.

FAQ

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

A: The Intel Core i9-11900H wins every multi-core benchmark in the head-to-head set. Its largest margin is in Cinebench R23 multi-core, where it scores 16772 versus AMD's 8854, a 47.2% lead.

Q: Does the AMD Ryzen 5 PRO 6650U win any benchmarks?

A: Yes, it wins the PassMark single-threaded test by 1.5%, scoring 3149 against Intel's 3102. That result appears twice in the database with identical scores.

Q: How do the power requirements compare?

A: The AMD chip is rated at 15 watts TDP, while the Intel chip is rated at 35 watts. The Intel processor draws more than double the power budget, which is consistent with its higher performance in most tests.

Q: What memory types do these processors support?

A: The AMD Ryzen 5 PRO 6650U supports DDR5 memory with 76.8 GB/s bandwidth. The Intel Core i9-11900H supports DDR4 memory with 51.2 GB/s bandwidth. Both use dual-channel memory buses.

Q: Which chip has more cache?

A: The Intel chip has 24 MB of shared L3 cache and 1.25 MB of L2 per core. The AMD chip has 16 MB of shared L3 and 512 KB of L2 per core. Intel also allocates 80 KB of L1 per core versus AMD's 64 KB.

Q: Are both processors still in production?

A: No. The AMD Ryzen 5 PRO 6650U is listed as active, while the Intel Core i9-11900H is end-of-life.

Specification Differences

| Specification | AMD Ryzen 5 PRO 6650U | Intel Core i9-11900H |

|---|---|---|

| Cores | 6 | 8 |

| Threads | 12 | 16 |

| Base clock | 2.90 GHz | 2.10 GHz |

| Boost clock | 4.50 GHz | 4.90 GHz |

| TDP | 15 W | 35 W |

| Socket | AMD Socket FP7 | Intel BGA 1787 |

| Architecture | Zen 3+ | Tiger Lake |

| Codename | Rembrandt | Tiger Lake-H |

| Process node | 6 nm | 10 nm |

| Foundry | TSMC | Intel |

| Die size | 208 mm² | 190 mm² |

| L1 cache | 64 KB per core | 80 KB per core |

| L2 cache | 512 KB per core | 1.25 MB per core |

| L3 cache | 16 MB shared | 24 MB shared |

| Memory support | DDR5 | DDR4 |

| Memory bandwidth | 76.8 GB/s | 51.2 GB/s |

| Integrated graphics | Radeon 660M | UHD Graphics 750 |

| Production status | Active | End-of-life |

| Release date | 2022-04-18 | 2021-05-10 |

| Launch MSRP | None recorded | $546 |

| Part number | 100-000000539100-000000551 | SRKT7 |

The two chips share some traits: both are mobile parts, both use dual-channel memory, both support PCIe Gen 4 with 20 lanes, neither supports ECC, and neither has an unlocked multiplier. The Intel chip is older, larger in core count, and higher in TDP. The AMD chip is newer, built on a smaller process node, and far more power-efficient on paper.

Where Each One Wins

The Intel Core i9-11900H wins in nearly every performance category recorded. For multi-threaded rendering, video encoding, or any workload that scales across cores, the data is unambiguous. Cinebench R23 multi-core shows a 47.2% advantage. Cinebench R15 multi-core shows 13.6%. PassMark multithread shows 18.5%. Integer math, floating-point math, extended instructions, prime number finding, data compression, random string sorting, and physics simulation all go to Intel by margins ranging from 12.2% to 40.2%.

The Intel chip also wins single-core Cinebench testing, which is notable given its higher boost clock of 4.90 GHz versus AMD's 4.50 GHz. In Cinebench R23 single-core, Intel leads by 38.2%. In Cinebench R15 single-core, the lead is only 2.3%, but it is still a win.

The AMD Ryzen 5 PRO 6650U claims exactly one distinct victory: the PassMark single-threaded test, by 1.5%. That is a narrow margin, but it is a genuine result. For everyday desktop tasks that rely on a single thread, the Ryzen is not at a disadvantage. The AMD chip also has the advantage of a 15 watt TDP, which suggests it belongs in thinner, lighter, longer-lasting laptops. The database does not record battery life, so any such claim must remain qualitative, but the thermal envelope difference is factual. The AMD part is also the one still in active production, which matters for availability in new systems.

The Verdict

The data supports a clear split by use case. If the priority is raw compute performance, the Intel Core i9-11900H is the stronger processor. It wins 13 of 15 head-to-head tests, including every multi-core test and both Cinebench single-core tests. The 47.2% lead in Cinebench R23 multi-core is decisive for rendering workloads. The 40.2% lead in prime number finding and the 24% lead in extended instructions point to strong math and simulation performance. The 28.3% lead in random string sorting and 20.5% lead in data compression indicate solid general productivity throughput. With a launch MSRP of $546, it was positioned as a premium mobile part, and the benchmark results justify that positioning.

The AMD Ryzen 5 PRO 6650U is the better choice when power efficiency and portability take priority over peak performance. Its 15 watt TDP is less than half of Intel's 35 watt rating. Its single-threaded PassMark win by 1.5% shows that light workloads are not a compromise. Its newer release date and active production status mean it is still a viable option for current laptop designs. Buyers who need a capable, efficient processor for everyday work will find the Ryzen adequate. Buyers who need maximum compute throughput for demanding applications should pick the Intel part, provided the higher power draw is acceptable.

The two chips occupy different positions in the mobile market. Intel targets performance, AMD targets efficiency. The benchmark data reflects exactly that split.