Intel Core i7-12800HX vs Intel Core Ultra 7 165H Comparison

The Intel Core Ultra 7 165H and Intel Core i7-12800HX are both 16-core mobile processors, but they are built for different priorities. The benchmark data shows a clear split: the i7-12800HX dominates nearly every performance metric, while the Ultra 7 165H offers a more power-efficient design with a newer architecture. The i7-12800HX wins 15 of the 17 head-to-head tests, with the Ultra 7 165H taking only two wins. Both processors sit at the 84th percentile among all CPUs, but their average benchmark scores tell different stories—the i7-12800HX averages 33,875, while the Ultra 7 165H averages 34,083, a marginal difference that masks the lopsided individual test results.

The Verdict

The Intel Core i7-12800HX is the straightforward choice for raw performance. Its Cinebench R23 multi-core score of 22,456 is 35.2% ahead of the Ultra 7 165H’s 14,551. That gap is enormous for mobile processors and shows up across nearly every workload type—compression, encryption, floating-point math, and integer math all favor the older chip by 18-27%. If you are rendering video, compiling code, or running heavy simulations, the i7-12800HX is the one to pick, provided the system can handle its 55W TDP.

The Intel Core Ultra 7 165H is for users who want a modern platform with a lower power envelope. Its 28W TDP is half that of the i7-12800HX, and it still delivers competitive single-core performance—only 2.9% behind in Cinebench R23 single-core. It also wins the PassMark physics test by 3.6% and prime number finding by 9.3%. This is the processor for thin-and-light laptops where battery life and thermals matter more than maximum multi-threaded throughput. The i7-12800HX makes sense in larger chassis with robust cooling, where its higher power draw is acceptable.

Where Each One Wins

The i7-12800HX wins every Cinebench test—R15, R20, and R23, both single-core and multi-core. The multi-core deltas are particularly brutal: 21.9% in R15, 16.9% in R20, and 35.2% in R23. It also sweeps all the PassMark integer, floating-point, encryption, compression, and string sorting tests. Its single-thread PassMark score of 3,711 is 5.4% higher than the Ultra 7’s 3,509. In multi-threaded PassMark, it leads by 17.9% (31,585 vs 25,933).

The Ultra 7 165H wins exactly two tests. PassMark find prime numbers shows a 9.3% advantage (118 vs 108), and PassMark physics shows a 3.6% lead (1,806 vs 1,743). These are narrow wins but they indicate the Meteor Lake architecture handles certain integer-heavy and physics-oriented workloads more efficiently. For general productivity, the i7-12800HX is faster across the board, but the Ultra 7’s wins suggest it is not a slouch in specific niche tasks.

Architecture Differences

The two chips come from different Intel generations and process nodes. The Core Ultra 7 165H uses the Meteor Lake architecture on a 7nm process, while the Core i7-12800HX uses Alder Lake-HX on a 10nm node. The process node difference is significant—the newer 7nm design allows the Ultra 7 to hit a 5.00 GHz boost clock at 28W TDP, whereas the i7-12800HX boosts to 4.80 GHz at 55W. The base clocks are also wildly different: the Ultra 7 runs at 3.80 GHz, while the i7-12800HX’s base is listed at 2000.00 MHz, which is likely a low-power base for a chip designed to boost aggressively.

Cache layouts differ. The Ultra 7 has 112 KB L1 per core and 2 MB L2 per core, with 24 MB shared L3. The i7-12800HX has smaller 80 KB L1 and 1.25 MB L2 per core, but a slightly larger 25 MB shared L3. The die size also differs—the i7-12800HX measures 215 mm², while the Ultra 7’s die size is not listed. Both use dual-channel memory, but the i7-12800HX supports DDR4 and DDR5, while the Ultra 7’s memory support is listed as DDR5 depending on the motherboard. The Ultra 7 has a listed memory bandwidth of 89.6 GB/s; the i7-12800HX does not have a bandwidth figure in the data.

Integrated graphics are a major divergence. The Ultra 7 packs Arc Xe-LPG with 128 execution units, while the i7-12800HX has UHD Graphics 770. PCIe lanes also differ: the Ultra 7 has 8 CPU lanes at Gen 5, while the i7-12800HX has 20 Gen 5 lanes. The i7-12800HX has an unlocked multiplier, whereas the Ultra 7 is locked. Both are mobile parts on Intel BGA sockets, but the Ultra 7 uses BGA 2049 while the i7-12800HX uses BGA 1964.

FAQ

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

A: The Intel Core i7-12800HX is significantly faster. It scores 22,456 in Cinebench R23 multi-core versus 14,551 for the Ultra 7 165H, a 35.2% advantage. The i7-12800HX also leads by 21.9% in Cinebench R15 multi-core and 16.9% in R20 multi-core.

Q: Does the Ultra 7 165H win any benchmark tests?

A: Yes, it wins two of the 17 head-to-head tests. It scores 118 in PassMark find prime numbers versus 108 for the i7-12800HX (a 9.3% lead) and 1,806 in PassMark physics versus 1,743 (a 3.6% lead).

Q: How do the single-core performances compare?

A: The i7-12800HX is ahead in every single-core test, but the margins are small. It leads by 1.2% in Cinebench R15 single-core (260 vs 257), 2.9% in R23 single-core (1,812 vs 1,759), and 5.4% in PassMark single-thread (3,711 vs 3,509). The Ultra 7 is competitive but not faster.

Q: What is the power consumption difference?

A: The Ultra 7 165H has a TDP of 28W, while the i7-12800HX has a TDP of 55W. This is a major difference for laptop design, as the Ultra 7 can be cooled more easily in thinner chassis.

Q: Which processor has a newer architecture?

A: The Ultra 7 165H uses the Meteor Lake architecture on a 7nm process, released on 2023-12-13. The i7-12800HX uses the Alder Lake-HX architecture on a 10nm process, released on 2022-05-09.

Q: Are their overall benchmark averages similar?

A: Yes, the average benchmark scores are close. The Ultra 7 165H averages 34,083, and the i7-12800HX averages 33,875. Both are at the 84th percentile among all CPUs, despite the i7-12800HX winning most individual tests.

Head-to-Head Benchmarks

The biggest win for the i7-12800HX is in Cinebench R23 multi-core, where it scores 22,456 against the Ultra 7’s 14,551—a 35.2% gap. This is the largest delta in any test and highlights the i7-12800HX’s advantage in heavily threaded workloads. The i7-12800HX also wins Cinebench R15 multi-core by 21.9% (3,383 vs 2,641) and R20 multi-core by 16.9% (11,111 vs 9,233). In PassMark data compression, the i7-12800HX scores 387,535 versus 291,161, a 24.9% lead. Extended instructions favor the i7-12800HX by 27.2% (23,760 vs 17,299). Integer math shows an 18.7% lead (109,968 vs 89,415), and floating-point math is 19.3% ahead (82,122 vs 66,273).

The i7-12800HX’s multi-threaded PassMark score of 31,585 is 17.9% higher than the Ultra 7’s 25,933. Even in single-threaded PassMark, the i7-12800HX leads by 5.4% (3,711 vs 3,509). Random string sorting favors the i7-12800HX by 21.2% (42,453 vs 33,473). Data encryption is 21.9% better (21,972 vs 17,169). The only bright spot for the Ultra 7 is PassMark find prime numbers, where it wins 118 to 108 (9.3%), and PassMark physics, where it wins 1,806 to 1,743 (3.6%). These two wins are narrow but show that the Ultra 7 is not universally slower.

Specification Differences

The most notable difference is TDP: the Ultra 7 165H runs at 28W, while the i7-12800HX runs at 55W. Base clocks differ massively—3.80 GHz for the Ultra 7 versus 2000.00 MHz for the i7-12800HX—but boost clocks are closer, with the Ultra 7 hitting 5.00 GHz and the i7-12800HX hitting 4.80 GHz. Both have 16 cores, but the i7-12800HX has 24 threads versus 22 for the Ultra 7. The i7-12800HX has a larger L3 cache at 25 MB shared, while the Ultra 7 has 24 MB shared. Per-core L1 and L2 caches are larger on the Ultra 7 (112 KB and 2 MB) versus the i7-12800HX (80 KB and 1.25 MB).

Process nodes differ: 7nm for the Ultra 7 versus 10nm for the i7-12800HX. The i7-12800HX has a listed die size of 215 mm², while the Ultra 7 has none. Memory support differs—the i7-12800HX supports DDR4 and DDR5, while the Ultra 7 lists only DDR5. The Ultra 7 has a memory bandwidth of 89.6 GB/s; the i7-12800HX has no listed bandwidth. PCIe lanes favor the i7-12800HX at 20 Gen 5 lanes versus 8 for the Ultra 7. Integrated graphics are different: Arc Xe-LPG 128EU on the Ultra 7 versus UHD Graphics 770 on the i7-12800HX. The i7-12800HX has an unlocked multiplier; the Ultra 7 is locked. Sockets differ (BGA 2049 vs BGA 1964), and the i7-12800HX was released over a year earlier (2022-05-09 vs 2023-12-13). The launch MSRP is $460 for the Ultra 7 and $457 for the i7-12800HX.