AMD Ryzen 7 7700X3D vs Intel Core Ultra 7 255HX Comparison

The Verdict

The database comparison between the AMD Ryzen 7 7700X3D and the Intel Core Ultra 7 255HX is not a balanced contest across the recorded metrics. The Intel part has a complete benchmark record, while the AMD processor has no recorded benchmark scores in the database, leaving its measured performance profile absent. The Intel Core Ultra 7 255HX sits at the 93rd percentile among all CPUs in the database, with an average benchmark score of 62738. Its closest recorded rivals include the AMD Ryzen AI Embedded P185 at 62839, which is 0.2 percent ahead, and the AMD Ryzen AI 9 PRO 465 at 62498, which trails by 0.4 percent. The Intel Core i7-13790F scores 63080, 0.5 percent higher, and the Intel Core Ultra 7 265HX scores 63173, 0.7 percent higher. The 255HX therefore sits within a tight performance cluster, separated from its nearest competitors by less than one percent in every direction.

For the AMD Ryzen 7 7700X3D, the database contains no benchmark scores, no nearest rivals, and a percentile ranking of 50. That percentile places it at the midpoint of all CPUs in the database, but without measured scores, the ranking cannot be tied to specific workload performance. The absence of data means the Ryzen 7 7700X3D cannot be positioned against the Intel part in any recorded benchmark discipline. The Intel Core Ultra 7 255HX is the only processor in this comparison with verified results, and any selection guidance must reflect that limitation.

The data supports a clear conclusion: the Intel Core Ultra 7 255HX is the documented performer here, with a full suite of Cinebench and PassMark results, while the AMD Ryzen 7 7700X3D remains unmeasured in the database. For any workload where recorded scores matter, the Intel part is the only option with evidence. The AMD processor should be considered only when its architectural characteristics, such as the large shared L3 cache, are the deciding factor, because its benchmark performance is not recorded.

Where Each One Wins

The Intel Core Ultra 7 255HX wins every recorded benchmark category in this comparison, simply because it is the only processor with benchmark entries. In Cinebench R15 multicore, it scores 4916, and in single-core it scores 327. Cinebench R20 results show 17187 multicore and 2426 single-core. Cinebench R23 delivers 32612 multicore and 2163 single-core. These scores establish a strong multi-threaded profile, consistent with a 20-core, 20-thread configuration.

PassMark results for the Intel part cover a broad range of workloads. The multithread score is 48234, and the single-thread score is 4562 (also listed as 4562 under passmark_singlethread, a duplicate entry in the recorded data). Data compression scores 515143, while data encryption reaches 39499. Extended instructions score 41247, and finding prime numbers scores 400. Floating point math produces 160624, and integer math reaches 127126. Physics scoring lands at 2926, and random string sorting completes at 62591.

The AMD Ryzen 7 7700X3D has zero wins because the database contains no benchmark entries for it. Its winsA field is 0, and the Intel part has winsB at 0 as well, meaning the head-to-head benchmark table is empty. The AMD processor cannot claim wins in any category from the recorded data. Its architectural strengths, including the 96 MB shared L3 cache and 5 nm process node, are documented, but no measured performance is available to support workload-specific victories.

The practical split is therefore one-sided in the data. The Intel Core Ultra 7 255HX demonstrates measurable strength in both single-threaded and multi-threaded workloads, with Cinebench R23 scores of 2163 and 32612 respectively. The AMD Ryzen 7 7700X3D offers a different configuration, 8 cores and 16 threads with a 96 MB shared L3 cache, but the database cannot confirm how that translates into benchmark results.

Architecture Differences

The two processors come from different market segments and use distinctly different designs. The AMD Ryzen 7 7700X3D belongs to the 7000 series, uses the Raphael codename, and is built on the Zen 4 architecture at a 5 nm process node from TSMC. It contains 11,270 million transistors on a 71 mm² die. The Intel Core Ultra 7 255HX is part of Core Ultra Series 2, uses the Arrow Lake architecture with the Arrow Lake-HX codename, and is built on a 3 nm process node, also from TSMC. It contains 17,800 million transistors on a 243 mm² die. The Intel die is substantially larger and holds more transistors, reflecting its higher core count.

Core and thread counts differ sharply. The AMD part has 8 cores and 16 threads, while the Intel part has 20 cores and 20 threads. The Intel processor uses a configuration without hyperthreading, matching thread count to core count. Clock speeds also differ. The AMD base clock is 4.00 GHz with a boost clock of 4.50 GHz. The Intel base clock is 2.40 GHz with a boost clock of 5.20 GHz. The Intel part boosts significantly higher, while the AMD part has a much higher base clock.

Cache hierarchies follow different philosophies. The AMD Ryzen 7 7700X3D allocates 64 KB of L1 cache per core, 1 MB of L2 cache per core, and a large 96 MB shared L3 cache. That large L3 capacity is the defining feature of the X3D series. The Intel Core Ultra 7 255HX provides 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 30 MB of shared L3 cache. The Intel part has more cache per core at the L1 and L2 levels, but the AMD part holds over three times as much shared L3 cache.

Memory support shows both similarities and differences. Both processors support DDR5 memory and use a dual-channel memory bus. The AMD part has a recorded memory bandwidth of 83.2 GB/s, while the Intel part reaches 102.4 GB/s. The Intel processor offers about 19 GB/s more memory bandwidth in the recorded specifications. ECC memory support also differs: the AMD Ryzen 7 7700X3D supports ECC memory, while the Intel Core Ultra 7 255HX does not.

PCIe connectivity differs in lane count. The AMD processor provides Gen 5 with 24 lanes from the CPU, while the Intel processor provides Gen 5 with 20 lanes. The AMD part offers four additional PCIe lanes. Integrated graphics also differ. The AMD part uses Radeon Graphics, while the Intel part uses Arc Xe-LPG Graphics with 64 execution units.

The AMD processor uses the AMD Socket AM5, a desktop platform, while the Intel processor uses Intel BGA 2114, a mobile platform. The market segments reflect this: the AMD part is classified as Desktop, and the Intel part is classified as Mobile. The AMD processor has a TDP of 120 watts, while the Intel processor has a TDP of 55 watts. The Intel part draws less than half the thermal design power of the AMD part in the recorded specifications.

The AMD processor has a launch MSRP of $329. The Intel processor has no recorded launch MSRP in the database. The AMD multiplier is locked, while the Intel multiplier is unlocked. The AMD release date is recorded as 2026-05-30, while the Intel release date is recorded as 2025-01-12, making the Intel part earlier to market by over a year. The Intel part number is SRVFG, and the AMD part number is 100-000002235.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 7 255HX has 20 cores and 20 threads. The AMD Ryzen 7 7700X3D has 8 cores and 16 threads. The Intel part has 12 more cores and 4 more threads in the recorded specifications.

Q: Which processor has the larger L3 cache?

A: The AMD Ryzen 7 7700X3D has 96 MB of shared L3 cache. The Intel Core Ultra 7 255HX has 30 MB of shared L3 cache. The AMD part holds 66 MB more L3 cache.

Q: Is there a benchmark score for the AMD Ryzen 7 7700X3D?

A: No. The database contains no benchmark entries for the AMD Ryzen 7 7700X3D. Its average benchmark score is recorded as 0, and its nearest rivals list is empty. The Intel Core Ultra 7 255HX has 17 recorded benchmark scores.

Q: What is the single-core performance of the Intel Core Ultra 7 255HX?

A: In Cinebench R15 single-core, the Intel part scores 327. In Cinebench R20 single-core, it scores 2426. In Cinebench R23 single-core, it scores 2163. PassMark single-thread scores are 4562 in both recorded entries.

Q: Does the Intel Core Ultra 7 255HX support ECC memory?

A: No. The recorded specifications list ECC memory as false for the Intel processor. The AMD Ryzen 7 7700X3D lists ECC memory as true.

Q: What are the thermal design power values for each processor?

A: The AMD Ryzen 7 7700X3D has a TDP of 120 watts. The Intel Core Ultra 7 255HX has a TDP of 55 watts. The Intel part is rated for 65 watts less thermal design power.

Head-to-Head Benchmarks

The head-to-head benchmark table in the database is empty. Neither processor has entries in the headToHeadBenchmarks field, and both winsA and winsB are recorded as 0. This means no direct A/B benchmark results exist for this pairing. The analysis must therefore use the individual benchmark suite recorded for the Intel Core Ultra 7 255HX and compare its scores against its nearest rivals, since the AMD Ryzen 7 7700X3D has no recorded scores at all.

The Intel Core Ultra 7 255HX shows its largest multi-threaded result in Cinebench R23 multicore with a score of 32612. That score is supported by Cinebench R20 multicore at 17187 and Cinebench R15 multicore at 4916. The scaling across these Cinebench versions is consistent, with each newer version producing a higher absolute score due to longer workload durations. In PassMark multithread, the score is 48234, which is higher than the Cinebench R23 multicore score. The PassMark suite measures a broader set of parallel workloads, which explains the difference in scale.

Single-thread results for the Intel part follow a similar pattern. Cinebench R23 single-core scores 2163, Cinebench R20 single-core scores 2426, and Cinebench R15 single-core scores 327. The PassMark single-thread score of 4562 uses a different scale, as PassMark single-thread tests are not directly comparable to Cinebench scores. The two duplicate PassMark single-thread entries both record 4562, confirming the value.

The nearest rivals provide context for the Intel part's position. The AMD Ryzen AI Embedded P185 scores 62839, which is 0.2 percent higher than the 255HX's 62738. The AMD Ryzen AI 9 PRO 465 scores 62498, 0.4 percent lower. The Intel Core i7-13790F scores 63080, 0.5 percent higher, and the Intel Core Ultra 7 265HX scores 63173, 0.7 percent higher. All four rivals sit within one percent of the 255HX, placing it in a dense competitive field. The 255HX is neither the fastest nor the slowest in its immediate peer group, but the differences are marginal.

PassMark workload scores for the Intel part reveal where its strengths concentrate. Data compression scores 515143, the highest PassMark category in its recorded set. Data encryption scores 39499, extended instructions score 41247, and random string sorting scores 62591. Floating point math reaches 160624, while integer math reaches 127126. The prime number search scores 400, and physics scoring reaches 2926. These results indicate a processor that handles compression and math workloads particularly well, with the prime number test being the only category below 1000.

The AMD Ryzen 7 7700X3D cannot be compared directly because its benchmark array is empty. The database records its percentile rank as 50, which places it at the median of all CPUs, but no average score accompanies that rank. The absence of nearest rivals for the AMD part further limits comparison. The recorded specifications, such as the 96 MB shared L3 cache and the 5 nm process node, suggest a processor designed for cache-sensitive workloads, but the database provides no measured confirmation.

The Intel Core Ultra 7 255HX, by contrast, has a complete record. Its average benchmark score of 62738 and 93rd percentile rank place it firmly in the upper tier of the database. The margin over its nearest rivals is small, under one percent in each case, but the 255HX has the advantage of a full benchmark suite that allows workload-level analysis. The AMD Ryzen 7 7700X3D offers a different architectural approach with its large L3 cache, lower core count, and desktop socket, but the recorded data cannot support any performance claims. For the purposes of this comparison, the Intel Core Ultra 7 255HX is the only processor with measured results, and it delivers a strong multi-threaded and single-threaded profile across both Cinebench and PassMark test suites.