AMD Ryzen 7 7700X3D vs Intel Core Ultra X9 378H Comparison

AMD Ryzen 7 7700X3D and Intel Core Ultra X9 378H occupy opposite ends of the processor spectrum. The AMD part is a desktop chip built for high-performance desktop systems, while the Intel part is a mobile processor designed for laptops. The database contains recorded benchmark scores for the Intel Core Ultra X9 378H, but no benchmark scores for the AMD Ryzen 7 7700X3D. The analysis below compares the two based on the recorded data for the Intel chip and the full specification list for the AMD chip.

Head-to-Head Benchmarks

The Intel Core Ultra X9 378H has a complete set of benchmark results in the database. Its average benchmark score is 47468, which places it in the 89th percentile of all CPUs. The AMD Ryzen 7 7700X3D has an average benchmark score of 0 and sits in the 50th percentile, but this reflects the absence of recorded test data rather than actual performance.

Looking at the Intel chip's Cinebench results, the multicore scores show strong thread scaling. In Cinebench R15 multicore, the Intel chip scores 3281 points. In Cinebench R20 multicore, it scores 13672 points. In Cinebench R23 multicore, the score climbs to 32553 points. The single-core results are equally telling: Cinebench R15 single-core scores 462 points, Cinebench R20 single-core scores 1929 points, and Cinebench R23 single-core scores 4595 points. These single-core numbers indicate the boost clock of 5.00 GHz delivers meaningful performance in lightly threaded workloads.

The PassMark suite provides additional detail on the Intel chip's capabilities. In PassMark multithread, the score is 38298. PassMark single-thread scores 4453 points. The integer math test produces 92603 points, while floating-point math reaches 114500 points. The extended instructions test scores 31315 points, and the find prime numbers test scores 357 points. Data compression scores 386591 points, data encryption scores 29840 points, and random string sorting scores 44648 points. The physics test scores 3404 points.

The nearest rivals for the Intel Core Ultra X9 378H provide context for these numbers. The AMD Ryzen 9 PRO 5945 has an average score of 47527, which is 0.1 percent lower than the Intel chip's average. The Intel Core i7-13700KF scores 47330 on average, placing it 0.3 percent behind the X9 378H. The Intel Core Ultra 7 265T averages 47697, which is 0.5 percent ahead of the X9 378H. The Intel Core i9-12900F averages 47176, sitting 0.6 percent behind. These small percentage differences show the X9 378H performs in a tight cluster with these desktop and mobile parts.

The lack of benchmark data for the AMD Ryzen 7 7700X3D means the head-to-head comparison is one-sided. The database shows the Intel chip's scores, but no equivalent scores exist for the AMD part. The AMD chip's specification sheet suggests it should compete in similar performance tiers, but without recorded measurements, the direct comparison relies on architecture and features rather than test results.

The Verdict

The data shows the Intel Core Ultra X9 378H is a measured, benchmarked processor with scores in the 89th percentile of all CPUs. Its average benchmark score of 47468 positions it alongside the AMD Ryzen 9 PRO 5945, Intel Core i7-13700KF, Intel Core Ultra 7 265T, and Intel Core i9-12900F, with all four rivals within 0.6 percent of its average. The Intel chip's 16 cores and 16 threads, combined with a 5.00 GHz boost clock, produce strong results in both multicore and single-core tests.

The AMD Ryzen 7 7700X3D has no benchmark scores in the database. Its 8 cores and 16 threads, 4.50 GHz boost clock, and 96 MB of L3 cache indicate a capable desktop processor, but the recorded data does not quantify its performance. The 50th percentile ranking and average benchmark score of 0 reflect missing data, not a performance verdict.

For a user choosing between these two, the Intel Core Ultra X9 378H is the only one with verified test results. It delivers competitive scores against established desktop processors like the Intel Core i7-13700KF and Intel Core i9-12900F. The AMD Ryzen 7 7700X3D remains an unmeasured quantity in this database, so any performance claims about it cannot be supported by the recorded data.

Architecture Differences

The two processors use fundamentally different designs. The AMD Ryzen 7 7700X3D is a desktop chip based on the Raphael codename and uses the Zen 4 microarchitecture. It is built on a 5 nm process at TSMC and contains 11,270 million transistors on a 71 mm² die. The Intel Core Ultra X9 378H is a mobile chip with the Panther Lake codename and uses the Panther Lake-H generation. It is built on a 3 nm process at Intel's own foundry, with no transistor count or die size recorded.

The core configurations differ significantly. The AMD chip has 8 cores and 16 threads, using simultaneous multithreading. The Intel chip has 16 cores and 16 threads, meaning it does not use multithreading; each core corresponds to one thread. This gives the Intel chip twice the physical core count but the same thread count as the AMD part.

Cache hierarchies are structured differently. The AMD Ryzen 7 7700X3D has 64 KB of L1 cache per core, 1 MB of L2 cache per core, and 96 MB of shared L3 cache. The Intel Core Ultra X9 378H has 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The AMD chip's large L3 cache totals 96 MB, while the Intel chip's L3 is 18 MB. Per-core L1 and L2 caches are larger on the Intel part.

Memory support differs as well. The AMD chip supports DDR5 memory over a dual-channel bus with a recorded bandwidth of 83.2 GB/s. It also supports ECC memory. The Intel chip supports LPDDR5X memory over a dual-channel bus with a recorded bandwidth of 153.6 GB/s. It does not support ECC memory. The Intel chip's memory bandwidth is nearly double the AMD chip's figure.

PCIe lanes also vary. The AMD Ryzen 7 7700X3D provides PCIe Gen 5 with 24 lanes from the CPU. The Intel Core Ultra X9 378H provides PCIe Gen 5 with only 4 lanes from the CPU. The desktop chip has significantly more PCIe connectivity.

Integrated graphics differ. The AMD chip includes Radeon Graphics, while the Intel chip includes Arc B390 graphics. Both provide integrated display output, but the specific capabilities are not benchmarked in the database.

The production status for both is Active. The AMD chip was released on 2026-05-30, while the Intel chip was released on 2026-04-03. The Intel chip launched about two months earlier. The AMD chip has a launch MSRP of $329, while no launch MSRP is recorded for the Intel chip.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra X9 378H has 16 cores, while the AMD Ryzen 7 7700X3D has 8 cores. Both have 16 threads, but the Intel chip achieves this with 16 physical cores and no multithreading, while the AMD chip uses 8 cores with 16 threads.

Q: What are the boost clock speeds?

A: The Intel Core Ultra X9 378H has a boost clock of 5.00 GHz, while the AMD Ryzen 7 7700X3D has a boost clock of 4.50 GHz. The base clocks are 2.00 GHz for the Intel chip and 4.00 GHz for the AMD chip.

Q: Which chip has more L3 cache?

A: The AMD Ryzen 7 7700X3D has 96 MB of shared L3 cache, compared to 18 MB for the Intel Core Ultra X9 378H. The Intel chip has larger per-core L1 and L2 caches, with 192 KB L1 and 2.5 MB L2 per core versus 64 KB L1 and 1 MB L2 per core for the AMD chip.

Q: What is the TDP difference?

A: The AMD Ryzen 7 7700X3D has a TDP of 120 watts, while the Intel Core Ultra X9 378H has a TDP of 25 watts. The Intel chip is designed for mobile use with much lower power draw.

Q: Do these chips support ECC memory?

A: The AMD Ryzen 7 7700X3D supports ECC memory. The Intel Core Ultra X9 378H does not support ECC memory.

Q: What sockets do they use?

A: The AMD Ryzen 7 7700X3D uses AMD Socket AM5, a desktop socket. The Intel Core Ultra X9 378H uses Intel BGA 2540, a ball-grid array socket for mobile devices.

Where Each One Wins

The Intel Core Ultra X9 378H wins in measured performance because it has benchmark scores in the database. Its Cinebench R23 multicore score of 32553 and single-core score of 4595 demonstrate strong results in both parallel and single-threaded workloads. The PassMark multithread score of 38298 and single-thread score of 4453 confirm this pattern. The chip's 89th percentile ranking and average benchmark score of 47468 place it close to desktop rivals like the Intel Core i7-13700KF and Intel Core i9-12900F, with percentage differences under one percent. The Intel chip also wins on core count, offering 16 cores versus 8, and on memory bandwidth, with 153.6 GB/s compared to 83.2 GB/s.

The AMD Ryzen 7 7700X3D wins on L3 cache capacity, with 96 MB versus 18 MB for the Intel chip. This large cache can benefit workloads that repeatedly access a sizable working set. The AMD chip also wins on PCIe connectivity, providing 24 Gen 5 lanes from the CPU compared to 4 Gen 5 lanes for the Intel part, which matters for desktop expansion. The AMD chip has ECC memory support, a feature absent from the Intel chip. The AMD chip's TDP of 120 watts indicates a desktop-class power envelope, while the Intel chip's 25 watt TDP indicates a mobile power envelope.

The market segments reflect these strengths. The AMD Ryzen 7 7700X3D is listed as a Desktop processor, while the Intel Core Ultra X9 378H is listed as a Mobile processor. The AMD chip uses a 5 nm process at TSMC, while the Intel chip uses a 3 nm process at Intel. The transistor count of 11,270 million for the AMD chip and the die size of 71 mm² are recorded only for the AMD part; no equivalent figures exist for the Intel chip. The release dates show the Intel chip launched on 2026-04-03 and the AMD chip on 2026-05-30.

Specification Differences

The two processors differ across nearly every specification field. Core count: the AMD Ryzen 7 7700X3D has 8 cores, the Intel Core Ultra X9 378H has 16 cores. Thread count is identical at 16 for both, but the AMD chip uses multithreading while the Intel chip does not. Base clock: 4.00 GHz for AMD, 2.00 GHz for Intel. Boost clock: 4.50 GHz for AMD, 5.00 GHz for Intel. TDP: 120 watts for AMD, 25 watts for Intel. Socket: AMD Socket AM5 for the AMD chip, Intel BGA 2540 for the Intel chip.

The codenames differ: Raphael for AMD, Panther Lake for Intel. The process nodes differ: 5 nm at TSMC for AMD, 3 nm at Intel for Intel. Transistor count and die size are recorded only for the AMD chip, with 11,270 million transistors and a 71 mm² die. Cache: L1 is 64 KB per core for AMD and 192 KB per core for Intel. L2 is 1 MB per core for AMD and 2.5 MB per core for Intel. L3 is 96 MB shared for AMD and 18 MB shared for Intel. Memory support: DDR5 for AMD, LPDDR5X for Intel. Memory bus is dual-channel for both. Memory bandwidth: 83.2 GB/s for AMD, 153.6 GB/s for Intel. ECC memory: supported on AMD, not supported on Intel. PCIe: Gen 5 with 24 lanes for AMD, Gen 5 with 4 lanes for Intel. Integrated graphics: Radeon Graphics for AMD, Arc B390 for Intel. Market segment: Desktop for AMD, Mobile for Intel. Production status is Active for both. Release dates: 2026-05-30 for AMD, 2026-04-03 for Intel. Launch MSRP is $329 for AMD, with no MSRP recorded for Intel. Neither chip has an unlocked multiplier. The part number is 100-000002235 for AMD and unknown for Intel.