Intel Core 5 320 vs Intel Core Ultra X9 378H Comparison

Head-to-Head Benchmarks

The benchmark data records 17 head-to-head comparisons between the Intel Core 5 320 and the Intel Core Ultra X9 378H. The Core Ultra X9 378H wins all 17 tests. There are no benchmark wins recorded for the Core 5 320 in this comparison set.

The largest margin appears in Cinebench R23 multi-core. The Core Ultra X9 378H scores 32553 against 6197 for the Core 5 320, a delta of -81%. This is the widest gap in the entire dataset. The multi-core advantage is consistent across all Cinebench versions. In Cinebench R15 multi-core, the Ultra X9 scores 3281 versus 1054, a -67.9% delta. In Cinebench R20 multi-core, the scores are 13672 and 5462, a -60% delta.

Single-core performance shows a smaller but still decisive gap. In Cinebench R23 single-core, the Ultra X9 scores 4595 against 1926, a -58.1% delta. Cinebench R20 single-core shows 1929 versus 771, a -60% delta. Cinebench R15 single-core shows 462 versus 276, a -40.3% delta. The narrowest margin in the entire dataset is PassMark single-thread, where the Ultra X9 scores 4453 and the Core 5 320 scores 4045, a -9.2% delta.

PassMark workloads follow the same pattern. Data compression favors the Ultra X9 at 386591 versus 148779, a -61.5% delta. Data encryption shows 29840 versus 10984, a -63.2% delta. Extended instructions score 31315 versus 13262, a -57.6% delta. Find prime numbers shows 357 versus 110, a -69.2% delta. Floating point math scores 114500 versus 42440, a -62.9% delta. Integer math scores 92603 versus 32323, a -65.1% delta. Multi-thread performance shows 38298 versus 15450, a -59.7% delta. Physics scores 3404 versus 1221, a -64.1% delta. Random string sorting shows 44648 versus 18038, a -59.6% delta.

The average benchmark score reinforces the hierarchy. The Core 5 320 averages 18023 points and sits at the 72nd percentile of all CPUs in the database. The Core Ultra X9 378H averages 47468 points and sits at the 89th percentile. That is a 163% higher average score for the Ultra X9. The nearest rivals for each part confirm their respective tiers. The Core 5 320 trades within 0.7% of the AMD Ryzen 5 1600, the Intel Core 5 120U, the Intel Core i5-1334U, and the AMD Ryzen 5 3600XT. The Core Ultra X9 378H trades within 0.6% of the AMD Ryzen 9 PRO 5945, the Intel Core i7-13700KF, the Intel Core Ultra 7 265T, and the Intel Core i9-12900F. Those rival sets place the two processors in entirely different performance classes.

The Verdict

The data is unambiguous. The Intel Core Ultra X9 378H outperforms the Intel Core 5 320 in every recorded benchmark. The largest deltas exceed 80%, and even the smallest single-thread margin sits at -9.2%. The Core 5 320 records zero wins across all 17 head-to-head tests.

The Core Ultra X9 378H is the appropriate choice for workloads that scale with core count and memory bandwidth. Its Cinebench R23 multi-core score of 32553 is more than five times the Core 5 320's 6197. PassMark multi-thread shows 38298 versus 15450. The 89th percentile ranking places it alongside desktop-class rivals such as the Intel Core i7-13700KF and the Intel Core i9-12900F.

The Core 5 320 remains a viable option only in contexts where its lower power envelope and smaller footprint matter more than raw throughput. Its 15 W TDP versus 25 W for the Ultra X9, combined with a single-channel memory bus and 6 PCIe Gen 4 lanes, indicates a design aimed at power-constrained mobile systems. The database shows it competing with the AMD Ryzen 5 1600 and the Intel Core 5 120U, parts from a lower performance tier. Users who prioritize multi-threaded rendering, encryption, compression, or physics simulation should select the Core Ultra X9 378H. Users who prioritize a 15 W part with integrated Xe3 Graphics and a smaller physical package may consider the Core 5 320, but the performance gap is severe.

Architecture Differences

The two processors share the same 3 nm process node and Intel foundry, but the internal designs diverge sharply. The Core 5 320 uses the Wildcat Lake codename and belongs to the Core 5 generation. It has 6 cores and 6 threads, with a base clock of 1.50 GHz and a boost clock of 4.60 GHz. The Core Ultra X9 378H uses the Panther Lake codename and belongs to the Core Ultra Series 3 generation. It has 16 cores and 16 threads, with a base clock of 2.00 GHz and a boost clock of 5.00 GHz. Neither part supports simultaneous multithreading, so thread counts equal core counts.

Cache layouts differ substantially. The Core 5 320 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The 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 per-core L2 allocation on the Ultra X9 scales with its 16 cores, giving it a total L2 capacity far beyond the Core 5 320. The L3 cache is three times larger on the Ultra X9.

Memory support differs in both type and width. The Core 5 320 supports DDR5 and LPDDR5X over a single-channel memory bus, delivering 59.7 GB/s of bandwidth. The Core Ultra X9 378H supports LPDDR5X only, over a dual-channel memory bus, delivering 153.6 GB/s. That is a 2.57 times bandwidth advantage for the Ultra X9.

PCIe connectivity also differs. The Core 5 320 provides Gen 4 with 6 CPU lanes. The Core Ultra X9 378H provides Gen 5 with 4 CPU lanes. The Ultra X9 uses the newer PCIe generation but fewer lanes. Integrated graphics differ as well. The Core 5 320 uses Intel Xe3 Graphics with 2 Xe cores. The Core Ultra X9 378H uses Arc B390. The sockets are incompatible: the Core 5 320 uses Intel BGA 1516, while the Core Ultra X9 378H uses Intel BGA 2540. Both parts have locked multipliers, neither supports ECC memory, and both are listed as Active in production status. The Core 5 320 has a launch MSRP of $340; the Core Ultra X9 378H has no recorded launch MSRP. Release dates sit close together: the Core 5 320 released on 2026-04-15 and the Core Ultra X9 378H on 2026-04-03.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra X9 378H has 16 cores and 16 threads. The Intel Core 5 320 has 6 cores and 6 threads.

Q: How much faster is the Core Ultra X9 378H in single-core performance?

A: The smallest single-core gap is in PassMark single-thread, where the Ultra X9 scores 4453 versus 4045, a -9.2% delta. The Cinebench R23 single-core gap is -58.1%, with scores of 4595 and 1926.

Q: What is the largest performance gap between the two?

A: The largest gap is Cinebench R23 multi-core. The Ultra X9 scores 32553 and the Core 5 320 scores 6197, a -81% delta.

Q: Do both processors use the same memory configuration?

A: No. The Core 5 320 uses a single-channel bus with 59.7 GB/s bandwidth and supports DDR5 and LPDDR5X. The Core Ultra X9 378H uses a dual-channel bus with 153.6 GB/s bandwidth and supports LPDDR5X only.

Q: What are the power requirements?

A: The Core 5 320 has a TDP of 15 W. The Core Ultra X9 378H has a TDP of 25 W.

Q: How do the two processors rank against all CPUs in the database?

A: The Core 5 320 sits at the 72nd percentile with an average benchmark score of 18023. The Core Ultra X9 378H sits at the 89th percentile with an average benchmark score of 47468.

Where Each One Wins

The Core Ultra X9 378H wins every recorded benchmark, so the use-case split is defined by the magnitude of its advantage rather than by any reversal.

Multi-threaded rendering and content creation workloads favor the Ultra X9 most strongly. Cinebench R23 multi-core shows the largest margin at -81%. The 16-core configuration with 2.5 MB L2 per core and 18 MB shared L3 supports heavy parallel workloads. Cinebench R15 and R20 multi-core deltas of -67.9% and -60% confirm the pattern across renderer versions.

Data-heavy tasks also favor the Ultra X9. Data compression shows a -61.5% delta, data encryption -63.2%, and random string sorting -59.6%. The dual-channel memory bus at 153.6 GB/s likely contributes to these results, as the Core 5 320 is limited to 59.7 GB/s over a single channel.

Math and physics workloads favor the Ultra X9. Floating point math shows a -62.9% delta, integer math -65.1%, and find prime numbers -69.2%. PassMark physics shows a -64.1% delta. Extended instructions show a -57.6% delta. The Ultra X9's higher boost clock of 5.00 GHz versus 4.60 GHz helps in these compute-bound tests.

The Core 5 320 has no benchmark wins, but its profile suggests a different role. The 15 W TDP, single-channel memory, Gen 4 PCIe with 6 lanes, and Intel Xe3 Graphics with 2 Xe cores indicate a power-efficient mobile part. Its nearest rivals, including the AMD Ryzen 5 1600 and the Intel Core 5 120U, occupy the mainstream mobile tier. The Ultra X9's nearest rivals, including the Intel Core i7-13700KF and the Intel Core i9-12900F, occupy the high-performance desktop tier. For workloads that require maximum throughput, the Ultra X9 is the clear choice. For constrained power envelopes in compact mobile systems, the Core 5 320 remains the only option of the two, but the performance cost is substantial.