AMD Ryzen 5 7500X3D vs Intel Core Ultra X9 388H Comparison

Head-to-Head Benchmarks

The benchmark data paints a strikingly one-sided picture. Across all eleven shared PassMark tests, the Intel Core Ultra X9 388H records the higher score. The AMD Ryzen 5 7500X3D does not win a single head-to-head comparison. This is not a close contest with split decisions; it is a systematic sweep by the Intel part. The overall average benchmark scores reflect this narrow but consistent gap: the AMD chip averages 44,573 points, while the Intel chip averages 44,466 points, a negligible 0.2% difference in favor of AMD. Yet that aggregate parity masks the lopsided nature of the individual tests.

The largest margin of victory for Intel comes in floating-point math. The X9 388H scores 112,550 against the Ryzen 5 7500X3D's 43,594, a 61.3% advantage. This is not a marginal edge; it is a dominant performance in a workload that stresses parallel arithmetic throughput. The Intel chip's 16 cores, versus the AMD chip's 6 cores, likely explains this gulf, as floating-point operations scale heavily with core count. Similarly, in data encryption, Intel leads by 44.6%, scoring 28,490 versus 15,797, and in prime number finding, Intel leads by 38.3%, scoring 358 versus 221. These are compute-bound tasks where the core count disparity becomes decisive.

In integer math, the gap narrows but remains firmly in Intel's favor. The X9 388H scores 90,882, while the Ryzen 5 7500X3D scores 70,774, a 22.1% difference. The extended instructions test shows a 31.7% lead for Intel (29,943 vs. 20,455), and random string sorting shows a 25% lead (44,010 vs. 32,999). Even in multithreaded performance, a category where the AMD chip's 96 MB of L3 cache might be expected to help, Intel wins decisively: 36,811 versus 25,047, a 32% margin. The physics test is the closest of all, with Intel ahead by just 13.9% (3,226 vs. 2,779), suggesting that the AMD chip's cache advantage provides some benefit in latency-sensitive physics calculations, but not enough to overcome Intel's raw core count.

Single-thread performance also favors Intel, though by a smaller margin. The X9 388H scores 4,280 in the single-thread PassMark test, while the Ryzen 5 7500X3D scores 3,494, an 18.4% lead for Intel. This is notable because the AMD chip's boost clock of 4.50 GHz is lower than Intel's 5.10 GHz, but the gap is still substantial. Data compression rounds out the list, with Intel ahead by 24.9% (361,763 vs. 271,649). Across every metric, the pattern is consistent: Intel's higher core count and higher boost clock translate into wins, while the AMD chip's cache advantage only appears to mitigate the losses rather than reverse them.

Architecture Differences

The two processors come from fundamentally different design philosophies and manufacturing processes. The AMD Ryzen 5 7500X3D is built on a 5 nm process at TSMC, using the Raphael codename from the Zen 4 architecture. It is a desktop part with 6 cores and 12 threads, which means it relies on simultaneous multithreading (SMT) to reach its thread count. The Intel Core Ultra X9 388H, by contrast, uses a 3 nm process at Intel's own foundry, with the Panther Lake architecture and codename. It offers 16 cores and 16 threads, meaning it has no hyperthreading; every core is a physical core. This core count difference is the single most significant architectural divergence, and it drives many of the benchmark results.

The cache configurations could not be more different. The AMD chip features 64 KB of L1 cache per core, 1 MB of L2 cache per core, and a massive 96 MB of shared L3 cache. This large L3 is the hallmark of the X3D lineup, designed to reduce memory latency for gaming and cache-sensitive workloads. The Intel chip has 192 KB of L1 per core, 3 MB of L2 per core, but only 18 MB of shared L3 cache. In total, the AMD chip's L3 cache is more than five times larger. However, the Intel chip's per-core L1 and L2 caches are larger, which may help with single-threaded efficiency. The benchmark data does not show the AMD cache advantage translating into wins, suggesting that the workload mix in these tests favors core count over cache size.

Clock speeds and power envelopes also differ substantially. The AMD chip has a base clock of 4.00 GHz and a boost clock of 4.50 GHz, with a TDP of 65 watts. The Intel chip has a base clock of 2.10 GHz, a boost clock of 5.10 GHz, and a TDP of just 25 watts. The Intel chip's boost clock is 0.60 GHz higher, which partially explains its single-thread advantage. The TDP difference is stark: the AMD chip draws 65 watts at nominal load, while the Intel chip draws only 25 watts. This makes the Intel part far more power-efficient on paper, though the Intel chip is a mobile part (BGA 2540 socket) while the AMD chip is a desktop part (AM5 socket). Memory support also differs: the AMD chip uses DDR5 with dual-channel memory and a bandwidth of 83.2 GB/s, while the Intel chip uses LPDDR5X with dual-channel memory and a bandwidth of 153.6 GB/s. The Intel chip's memory bandwidth is nearly double, which likely contributes to its wins in data-heavy tasks like compression and encryption. The AMD chip supports ECC memory, while the Intel chip does not. The AMD chip has 24 PCIe Gen 5 lanes (CPU only), while the Intel chip has just 4 PCIe Gen 5 lanes. Integrated graphics differ as well: the AMD chip includes Radeon Graphics, while the Intel chip includes Arc B390. The production status for both is active, with release dates of November 11, 2025 for AMD and January 4, 2026 for Intel.

The Verdict

The data is unambiguous: the Intel Core Ultra X9 388H wins every benchmark where the two are directly compared. If the decision is based purely on PassMark scores, the Intel chip is the superior performer across all measured categories, with margins ranging from 13.9% in physics to 61.3% in floating-point math. The AMD Ryzen 5 7500X3D does not offer a single benchmark win to claim as a counterpoint. The overall average scores are nearly identical (44,573 for AMD vs. 44,466 for Intel, a 0.2% difference), but that parity is misleading because it smooths over the Intel chip's consistent advantages in every individual test.

For a user prioritizing raw compute throughput, the Intel chip is the clear choice. Its 16 physical cores and higher boost clock deliver superior results in multithreaded, floating-point, encryption, and compression workloads. The Intel chip also offers higher single-thread performance, which is critical for lightly threaded applications. The AMD chip's advantages are more situational. It has a much larger L3 cache (96 MB vs. 18 MB), which historically benefits gaming and cache-sensitive tasks, but the benchmark data here does not include gaming tests. The AMD chip also supports ECC memory and has more PCIe lanes (24 vs. 4), which matters for desktop expansion. The Intel chip's mobile form factor and 25-watt TDP make it more suitable for laptops, while the AMD chip's 65-watt TDP and AM5 socket target desktop builds. Strictly from the data, the Intel chip wins on performance, while the AMD chip wins on cache size and desktop I/O flexibility.

FAQ

Q: Which processor has a higher single-thread score?

A: The Intel Core Ultra X9 388H scores 4,280 in the PassMark single-thread test, while the AMD Ryzen 5 7500X3D scores 3,494, giving Intel an 18.4% lead.

Q: How much larger is the AMD chip's L3 cache?

A: The AMD Ryzen 5 7500X3D has 96 MB of shared L3 cache, while the Intel Core Ultra X9 388H has 18 MB, making the AMD cache over five times larger.

Q: What is the TDP difference between the two?

A: The AMD chip has a TDP of 65 watts, while the Intel chip has a TDP of 25 watts, a 40-watt difference in favor of Intel's lower power draw.

Q: Are the average benchmark scores close?

A: Yes, the AMD chip averages 44,573 points, and the Intel chip averages 44,466 points, a 0.2% difference in favor of AMD.

Q: Does the AMD chip win any head-to-head benchmark?

A: No, the Intel chip wins all 11 shared benchmarks. The AMD chip has zero wins in the head-to-head comparisons.

Q: Which processor has more cores?

A: The Intel Core Ultra X9 388H has 16 cores and 16 threads, while the AMD Ryzen 5 7500X3D has 6 cores and 12 threads.

Where Each One Wins

The Intel Core Ultra X9 388H wins in every measured category. The largest victory is floating-point math, where Intel leads by 61.3% (112,550 vs. 43,594). This makes the Intel chip the better choice for scientific computing, 3D rendering, and any workload that relies heavily on parallel floating-point arithmetic. The Intel chip also dominates data encryption, leading by 44.6% (28,490 vs. 15,797), which matters for security applications and file encryption. In integer math, Intel leads by 22.1% (90,882 vs. 70,774), covering general-purpose computing tasks. The multithreaded score is 32% higher on Intel (36,811 vs. 25,047), making it the superior processor for video encoding, compilation, and other heavily threaded workloads. The single-thread advantage of 18.4% (4,280 vs. 3,494) means Intel is also better for everyday responsiveness and lightly threaded applications.

The AMD Ryzen 5 7500X3D does not win any benchmark, but it has structural advantages that the data does not directly measure. Its 96 MB of L3 cache is designed to reduce latency in cache-sensitive workloads like gaming, though no gaming benchmarks are in the data. The AMD chip supports ECC memory, which is essential for error-correcting workloads in servers or workstations. It has 24 PCIe Gen 5 lanes versus Intel's 4, allowing for more expansion cards and high-bandwidth devices. The AMD chip is also a desktop part with an AM5 socket, while the Intel chip is a mobile BGA 2540 part, so the AMD chip fits into standard desktop motherboards with more upgrade options. The Intel chip's lower TDP (25 watts vs. 65 watts) makes it more suitable for thin-and-light laptops, but the AMD chip's higher TDP enables sustained desktop performance.

Specification Differences

The two processors differ in nearly every key specification. The AMD Ryzen 5 7500X3D has 6 cores and 12 threads, while the Intel Core Ultra X9 388H has 16 cores and 16 threads. The AMD chip's base clock is 4.00 GHz and its boost clock is 4.50 GHz, while the Intel chip's base clock is 2.10 GHz and its boost clock is 5.10 GHz. The TDP is 65 watts for AMD and 25 watts for Intel. The AMD chip uses the AM5 socket, while the Intel chip uses BGA 2540. The AMD chip is built on a 5 nm process at TSMC with the Raphael codename, while the Intel chip is built on a 3 nm process at Intel with the Panther Lake codename. The AMD chip has 64 KB of L1 cache per core, 1 MB of L2 per core, and 96 MB of shared L3, while the Intel chip has 192 KB of L1 per core, 3 MB of L2 per core, and 18 MB of shared L3. The AMD chip supports DDR5 memory with 83.2 GB/s bandwidth, while the Intel chip supports LPDDR5X with 153.6 GB/s bandwidth. The AMD chip supports ECC memory; the Intel chip does not. The AMD chip has 24 PCIe Gen 5 lanes, while the Intel chip has 4 lanes. The integrated graphics are Radeon Graphics on AMD and Arc B390 on Intel. The AMD chip has a launch MSRP of $269, while the Intel chip has no listed launch MSRP. The release dates are November 11, 2025 for AMD and January 4, 2026 for Intel. Both chips have locked multipliers.