AMD Ryzen 7 6800U vs Intel Core i9-12900H Comparison

The Intel Core i9-12900H and AMD Ryzen 7 6800U represent two distinct philosophies for mobile computing: one prioritizes maximum performance within a high-power envelope, the other emphasizes efficiency within a ultra-low-power design. Benchmark data shows the Intel chip dominates in every single head-to-head comparison, yet the AMD part holds its own in the broader market context. The i9-12900H secures 15 wins with zero losses across all tested workloads, while the Ryzen 7 6800U counters with a higher base clock and a smaller manufacturing process. The performance gap is substantial, but so is the power consumption difference, which fundamentally shapes their intended use cases.

FAQ

Q: Which processor wins the most head-to-head benchmarks?

A: The Intel Core i9-12900H wins all 15 head-to-head benchmark comparisons against the AMD Ryzen 7 6800U, with a perfect 15-0 record in the tested suite.

Q: How large is the multi-core performance gap in Cinebench R23?

A: The Intel Core i9-12900H scores 15,946.5 in Cinebench R23 multi-core, which is 51.2% higher than the Ryzen 7 6800U's score of 10,546, representing the largest relative advantage in any rendering test.

Q: Does the AMD Ryzen 7 6800U have any advantage in clock speed?

A: Yes, the Ryzen 7 6800U has a higher base clock of 2.70 GHz compared to the Intel chip's 2.50 GHz, though the Intel part boosts higher at 5.00 GHz versus 4.70 GHz.

Q: What is the difference in physical core configuration?

A: The Intel Core i9-12900H features 14 cores and 20 threads, while the AMD Ryzen 7 6800U ships with 8 cores and 16 threads, giving the Intel chip a 6-core and 4-thread advantage.

Q: Which processor uses a smaller manufacturing process?

A: The AMD Ryzen 7 6800U is built on a 6 nm process by TSMC, while the Intel Core i9-12900H uses a 10 nm process from Intel's own foundry.

Q: How do their percentile rankings compare across all CPUs?

A: The Intel Core i9-12900H sits in the 80th percentile of all CPUs, while the AMD Ryzen 7 6800U ranks just one point lower in the 79th percentile, despite the large benchmark deltas.

Where Each One Wins

The Intel Core i9-12900H is the clear winner for compute-intensive workloads that can leverage its extra cores and threads. In Cinebench R23 multi-core, it posts 15,946.5 points versus 10,546 for the Ryzen 7 6800U, a 51.2% margin that scales across rendering. The 3DMark suite reinforces this, with the Intel part scoring 6,457 in the 16-thread test and 6,927 at maximum threads. For integer math, the Intel chip reaches 93,828 versus 77,731, a 20.7% lead, and it nearly doubles the Ryzen in prime number finding at 107 versus 57 (an 87.7% delta). PassMark multi-thread results show 27,340 for Intel against 20,350 for AMD, a 34.3% advantage.

The AMD Ryzen 7 6800U wins in the efficiency domain, though this is not directly benchmarked. Its 15W TDP versus Intel's 45W TDP makes it the logical choice for thin-and-light laptops prioritizing battery life over raw output. The Ryzen's higher base clock of 2.70 GHz versus 2.50 GHz suggests better responsiveness at lower power states. Its 6 nm process node from TSMC indicates a more modern manufacturing approach compared to Intel's 10 nm node. The AMD chip also offers a larger integrated graphics unit, Radeon 680M, though no graphics benchmarks are provided to quantify this advantage. For users who need sustained multi-hour unplugged operation, the Ryzen 7 6800U's lower power draw is the defining factor.

Architecture Differences

The Intel Core i9-12900H uses Alder Lake architecture, specifically the Alder Lake-H codename, built on a 10 nm process at Intel's foundry. It features a hybrid core design that combines performance and efficiency cores, totaling 14 cores with 20 threads. The cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 24 MB of shared L3 cache. The die size measures 217 mm². The integrated graphics is Iris Xe with 96 execution units. Memory support covers both DDR4 and DDR5, with dual-channel bus configuration and PCIe Gen 4 with 20 CPU lanes.

The AMD Ryzen 7 6800U employs Zen 3+ architecture under the Rembrandt codename, fabricated on a 6 nm process by TSMC. It provides 8 cores and 16 threads per the standard design. Each core carries 64 KB of L1 cache and 512 KB of L2 cache, with a total of 16 MB of shared L3 cache. The die size is 208 mm², slightly smaller than Intel's. Integrated graphics comes as Radeon 680M. Memory support is limited to DDR5 only, still dual-channel, with a rated memory bandwidth of 76.8 GB/s. PCIe support matches Intel at Gen 4 with 20 CPU lanes.

Both processors are locked (multiplier not unlocked) and target the mobile segment. The Intel part carries the part number SRLD4, while AMD uses 100-000000534100-000000617. Neither has ECC memory support. The AMD chip integrates its memory controller with higher bandwidth, but the Intel chip offers broader memory compatibility with DDR4 and DDR5 options.

Specification Differences

Clock speeds differ notably: the Intel i9-12900H has a 2.50 GHz base and 5.00 GHz boost, while the Ryzen 7 6800U has a 2.70 GHz base and 4.70 GHz boost. The Intel chip boosts 0.30 GHz higher but starts 0.20 GHz lower. Core counts diverge sharply: 14 cores and 20 threads for Intel versus 8 cores and 16 threads for AMD. The TDP rating is a major separator, with Intel at 45W and AMD at just 15W.

Cache configurations vary across all levels. Intel allocates 80 KB L1 per core, 1.25 MB L2 per core, and 24 MB shared L3. AMD assigns 64 KB L1 per core, 512 KB L2 per core, and 16 MB shared L3. Total L3 difference is 8 MB in Intel's favor. The process node differs: 10 nm for Intel versus 6 nm for AMD. Socket types also differ: Intel BGA 1744 versus AMD Socket FP7. Memory support lists DDR4 and DDR5 for Intel, but only DDR5 for AMD, which also specifies a 76.8 GB/s bandwidth figure. Integrated graphics differ as Iris Xe 96EU versus Radeon 680M.

The release date is given for Intel as 2022-01-03, while AMD's is not available. Production status for both is active. Die size is close, with Intel at 217 mm² and AMD at 208 mm². Neither processor has a launch MSRP listed. Both use dual-channel memory and Gen 4 PCIe with 20 lanes.

Head-to-Head Benchmarks

The largest single benchmark delta comes in PassMark find prime numbers, where the Intel Core i9-12900H scores 107 versus 57 for the Ryzen 7 6800U, a massive 87.7% advantage. This indicates a significant integer throughput advantage for Intel in specific algorithmic workloads. PassMark physics shows a similar pattern, with 1,753 for Intel against 984 for AMD, a 78.2% lead. Floating point math also heavily favors Intel: 67,940 versus 42,246, a 60.8% margin.

In Cinebench R23 multi-core, the Intel chip delivers 15,946.5 points, which is 51.2% ahead of AMD's 10,546. The single-core R23 result shows a more modest but still clear 23.7% lead, at 1,863.5 versus 1,506. Cinebench R15 multi-core tells the same story with 2,576.5 against 1,776, a 45.1% delta, while the single-core R15 margin narrows to 9.9% (266 versus 242). These numbers place the Intel chip firmly in a higher performance tier.

PassMark multi-thread results show 27,340 for Intel versus 20,350 for AMD, a 34.3% advantage. Data compression favors Intel by 29.8%, with scores of 316,714 and 244,082. Random string sorting shows a 36% lead for Intel at 35,296 versus 25,954. Data encryption has Intel ahead by 18.9% (18,548 versus 15,601), and extended instructions show an 18.4% margin (18,875 versus 15,935). Integer math completes the sweep with a 20.7% lead at 93,828 versus 77,731. Even the single-thread PassMark test, often a closer contest, shows Intel winning 3,717 to 3,166, a 17.4% gap.

The benchmark suite leaves no ambiguity: the Intel Core i9-12900H outperforms the AMD Ryzen 7 6800U in every measured workload, with margins ranging from 9.9% in Cinebench R15 single-core to 87.7% in prime number finding. The average benchmark scores confirm this, with Intel at 28,003 and AMD at 27,887, though this aggregate difference is just 0.4%. Both processors rank near each other in overall percentile (80th versus 79th), suggesting that in the broader CPU landscape, they occupy a similar performance class, even as the Intel part dominates this direct comparison.