AMD Ryzen 7 PRO 5755G vs Intel Core Ultra X9 378H Comparison

AMD Ryzen 7 PRO 5755G and Intel Core Ultra X9 378H sit at opposite ends of the design spectrum. The Ryzen part is a desktop chip built on a mature 7 nm process with a 65 W TDP, while the Intel part is a mobile processor on a current-generation 3 nm node with a 25 W TDP. The benchmark data is unambiguous: the Intel Core Ultra X9 378H wins all 11 recorded head-to-head tests, often by substantial margins. However, the story is not just about raw performance; it is about platform context, efficiency, and what each processor is designed to do.

The Verdict

The data shows a clear hierarchy. The Intel Core Ultra X9 378H is the faster processor in every measured workload, with an average benchmark score of 47468, placing it in the 89th percentile of all CPUs. The AMD Ryzen 7 PRO 5755G trails with an average score of 49196, which is actually higher numerically, but that figure is misleading because it includes different benchmark suites. Looking at the direct head-to-head results, the Intel part wins all 11 comparisons. The biggest gaps are in prime number finding, where Intel scores 357 versus AMD's 58, a 83.8% advantage, and in physics, where Intel scores 3404 versus 1022, a 70% lead. For users who need maximum compute throughput, especially in floating-point math, physics simulation, or heavy multi-threaded workloads, the Intel Core Ultra X9 378H is the clear pick.

The AMD Ryzen 7 PRO 5755G is not without merit, but its role is different. It is a desktop processor on the AMD Socket AM4 platform with 8 cores and 16 threads. It runs at a base clock of 3.80 GHz and boosts to 4.60 GHz. Its integrated Radeon Vega 8 graphics and 65 W TDP make it suitable for a compact desktop build where power draw is a consideration, but the performance data shows it is outclassed by the Intel part in every single benchmark category. The Intel chip, despite being a mobile part with a 25 W TDP, delivers higher single-thread performance (4453 versus 3366) and vastly higher multi-thread performance (38298 versus 23858). If you are building a desktop and want the best performance from these two options, the Intel chip wins on every metric. If you are constrained to the AM4 platform and need a solid 8-core workhorse, the AMD part is the only choice, but be aware that the data shows it will lose every benchmark comparison to the Intel mobile processor.

FAQ

Q: Which processor has better multi-threaded performance?

A: The Intel Core Ultra X9 378H is significantly faster. In the PassMark multithread test, it scores 38298, while the AMD Ryzen 7 PRO 5755G scores 23858. That is a 37.7% advantage for Intel.

Q: How do they compare in single-threaded performance?

A: The Intel chip wins here as well. It scores 4453 in the PassMark single-thread test, while the AMD chip scores 3366. The Intel part leads by 24.4% in this metric.

Q: Are these processors on the same platform?

A: No. The AMD Ryzen 7 PRO 5755G uses AMD Socket AM4 and supports DDR4 memory. The Intel Core Ultra X9 378H uses Intel BGA 2540 and supports LPDDR5X memory.

Q: What is the biggest performance gap between them?

A: The largest difference is in the PassMark find prime numbers test, where the Intel chip scores 357 and the AMD chip scores 58. The Intel part is 83.8% faster in this specific workload.

Q: Which chip has more cores and threads?

A: The Intel Core Ultra X9 378H has 16 cores and 16 threads. The AMD Ryzen 7 PRO 5755G has 8 cores and 16 threads. Both have the same thread count, but Intel has twice the core count.

Q: Is the AMD chip competitive in any workload?

A: The closest result is in PassMark integer math, where Intel scores 92603 and AMD scores 90270. The Intel chip wins by only 2.5% here, which is the narrowest margin across all tests.

Architecture Differences

The two processors represent fundamentally different design philosophies. The AMD Ryzen 7 PRO 5755G is built on the Zen 3 architecture with the codename Cezanne. It uses a 7 nm process node from TSMC and packs 10,700 million transistors onto a 180 mm² die. The chip features 8 cores and 16 threads, with each core having 64 KB of L1 cache and 512 KB of L2 cache, plus a shared 16 MB L3 cache. It supports DDR4 memory on a dual-channel bus with a bandwidth of 51.2 GB/s. The integrated graphics are Radeon Vega 8, and the PCIe interface is Gen 3 with 16 lanes from the CPU.

The Intel Core Ultra X9 378H takes a different approach. It is based on the Panther Lake codename and is part of the Core Ultra Series 3 generation. It is built on a 3 nm process node from Intel itself. The chip has 16 cores and 16 threads, meaning it does not use hyperthreading or SMT. Each core has 192 KB of L1 cache and 2.5 MB of L2 cache, with 18 MB of shared L3 cache. Memory support is LPDDR5X on a dual-channel bus, and the bandwidth is much higher at 153.6 GB/s. The integrated graphics are Arc B390, and the PCIe interface is Gen 5 with 4 lanes from the CPU.

The architectural differences are stark. The AMD chip is a desktop part with a mature process and a larger TDP budget of 65 W. The Intel chip is a mobile part with a 25 W TDP, yet it delivers higher performance due to its newer process node and higher core count. The Intel chip also has a significantly higher boost clock of 5.00 GHz compared to the AMD chip's 4.60 GHz. The cache hierarchy differs as well, with Intel providing more L1 and L2 cache per core and a larger L3 pool. The memory bandwidth difference is substantial: 153.6 GB/s for Intel versus 51.2 GB/s for AMD, which helps explain some of the performance gaps in memory-intensive workloads.

Specification Differences

The two chips differ in nearly every specification category. The AMD Ryzen 7 PRO 5755G has 8 cores, while the Intel Core Ultra X9 378H has 16 cores. Both have 16 threads, but Intel achieves this with physical cores only. The base clock is 3.80 GHz for AMD and 2.00 GHz for Intel. The boost clock is 4.60 GHz for AMD and 5.00 GHz for Intel. The TDP is 65 W for AMD and 25 W for Intel.

Process technology differs: AMD uses 7 nm TSMC, while Intel uses 3 nm Intel. The transistor count and die size are only listed for AMD (10,700 million and 180 mm²), with no data for Intel. Cache configurations differ: AMD has 64 KB L1 and 512 KB L2 per core, with 16 MB L3. Intel has 192 KB L1 and 2.5 MB L2 per core, with 18 MB shared L3. Memory support is DDR4 for AMD and LPDDR5X for Intel, both dual-channel. Memory bandwidth is 51.2 GB/s for AMD and 153.6 GB/s for Intel. Neither supports ECC memory.

PCIe capabilities are different: AMD offers Gen 3 with 16 lanes, Intel offers Gen 5 with 4 lanes. Integrated graphics are Radeon Vega 8 for AMD and Arc B390 for Intel. The market segment is Desktop for AMD and Mobile for Intel. The socket is AMD Socket AM4 for AMD and Intel BGA 2540 for Intel. Release dates differ: AMD launched on 2024-09-04, Intel on 2026-04-03. The AMD part number is listed as 100-000001748, while Intel's is unknown. Neither chip has an unlocked multiplier.

Head-to-Head Benchmarks

The head-to-head results are one-sided. The Intel Core Ultra X9 378H wins all 11 comparisons. The largest margin is in PassMark find prime numbers, where Intel scores 357 and AMD scores 58, giving Intel an 83.8% lead. The physics test is also lopsided: Intel scores 3404, AMD scores 1022, a 70% advantage. Floating-point math shows Intel at 114500 versus AMD's 50778, a 55.7% lead. Multi-thread performance is 38298 for Intel and 23858 for AMD, a 37.7% gap. Data encryption is 29840 versus 19450, a 34.8% lead for Intel. Extended instructions show Intel at 31315 and AMD at 20487, a 34.6% gap. Random string sorting is 44648 for Intel and 32771 for AMD, a 26.6% lead. Single-thread performance is 4453 for Intel and 3366 for AMD, a 24.4% gap. Data compression is 386591 for Intel and 295730 for AMD, a 23.5% lead.

The closest result is in integer math, where Intel scores 92603 and AMD scores 90270. The Intel advantage here is only 2.5%. This suggests that in pure integer arithmetic, the two architectures are more evenly matched. However, in every other workload, the Intel chip holds a commanding lead. The data shows that the Intel Core Ultra X9 378H is not just faster; it is dramatically faster in several key areas, particularly in workloads that benefit from high memory bandwidth and core count.

Where Each One Wins

The Intel Core Ultra X9 378H wins in every benchmark category recorded. The largest wins are in prime number finding, physics, and floating-point math. These are workloads that rely heavily on raw compute throughput and memory bandwidth. The Intel chip's 153.6 GB/s memory bandwidth and 16 physical cores give it a clear advantage. The 5.00 GHz boost clock also helps in single-threaded tasks, where it beats the AMD chip by 24.4%.

The AMD Ryzen 7 PRO 5755G has no benchmark wins in the head-to-head data. However, it does have some practical advantages that are not captured in the performance scores. It is a desktop part with a socketed AM4 platform, which means it can be installed in a standard desktop motherboard. It uses DDR4 memory, which is more common and potentially easier to source. Its TDP is higher at 65 W, but it is a desktop chip designed for a system with a capable air cooler. The Intel chip is a mobile part with a BGA socket, meaning it is soldered to the board and cannot be upgraded or swapped.

For users building a new desktop system, the Intel chip offers superior performance in every measured test. For users with an existing AM4 platform who want to upgrade, the AMD chip is the only option that fits that socket. The data shows that the Intel chip is the better performer, but the AMD chip has the advantage of platform compatibility and a simpler upgrade path on AM4. The choice ultimately comes down to whether you prioritize the highest benchmark scores or the ability to use an existing motherboard and DDR4 memory.