AMD Ryzen 9 9955HX3D vs Intel Core Ultra 7 270HX Plus Comparison

Head-to-Head Benchmarks

The benchmark data shows a clear split between these two mobile processors. The AMD Ryzen 9 9955HX3D wins 9 of 15 head-to-head comparisons, while the Intel Core Ultra 7 270HX Plus takes 6. The victories are not evenly distributed: AMD dominates heavily in multithreaded and integer-heavy workloads, while Intel's wins are concentrated in single-threaded and floating-point tests.

Starting with the biggest margin, the AMD chip leads by 81.7% in PassMark integer math, scoring 222,503 versus Intel's 122,449. That is the largest delta in the entire comparison. PassMark extended instructions also favor AMD by 59.9%, with scores of 62,813 against Intel's 39,283. Data compression shows a 59.3% advantage for AMD, 785,811 versus 493,179, and random string sorting goes to AMD by 39.1%, 83,497 versus 60,020.

The Cinebench R15 multicore test gives AMD a 43.1% lead, 6,042.5 versus 4,224. PassMark multithread goes to AMD by 29.8%, 62,674 versus 48,270, and PassMark physics shows a 22% margin, 4,687 versus 3,843. Data encryption is closer, with AMD ahead by 4.3%, 39,446 versus 37,813, and find prime numbers edges AMD's way by 8.9%, 525 versus 482.

Intel's largest win comes in Cinebench R23 single-core, where it scores 5,917 against AMD's 2,159.5, a 63.5% margin. Cinebench R15 single-core also goes decisively to Intel, 596 versus 332, a 44.3% difference. Cinebench R23 multicore is Intel's only multicore victory, 41,913 versus 38,161.5, a 9% lead. PassMark floating point math favors Intel by 11.9%, 163,567 versus 144,122, and PassMark single-thread shows Intel ahead by 5.3%, 4,764 versus 4,511.

The average benchmark score tells the broader story. AMD's average is 97,453, placing it in the 96th percentile of all CPUs. Intel's average is 61,834, in the 93rd percentile. AMD's nearest rivals include the AMD Ryzen Threadripper PRO 5965WX with an average score of 98,504 (1.1% higher), the AMD Ryzen 9 PRO 9945 at 96,083 (1.4% lower), and AMD EPYC parts at 95,764 and 95,615. Intel's nearest rivals are the Intel Core i9-13900KF at 61,841 (0% delta), the Core i9-13900K at 61,766 (0.1% higher), and the Core i9-13900T at 61,723.

What stands out is the asymmetry. AMD's 3D V-Cache-equipped processor leverages its 128 MB of L3 cache to crush integer, compression, and encryption workloads. Intel's Arrow Lake-HX Refresh design counters with superior single-core execution and floating-point throughput. The R23 multicore result is notable because it is the only major multithreaded benchmark where Intel wins, suggesting that Intel's 20-core, 20-thread configuration with 3 MB L2 per core handles certain rendering workloads better than AMD's 16-core, 32-thread design.

The Verdict

The data points to two distinct usage profiles. For heavily parallel integer workloads, data compression, encryption, and multithreaded general computing, the AMD Ryzen 9 9955HX3D is the stronger choice. Its 81.7% lead in integer math and 59.3% lead in data compression are decisive. Users who process large datasets, run compression pipelines, or engage in cryptography-heavy tasks should favor AMD.

For single-threaded responsiveness, floating-point calculations, and specific rendering workloads, the Intel Core Ultra 7 270HX Plus holds the advantage. The 63.5% margin in Cinebench R23 single-core is substantial, and the 11.9% lead in floating-point math indicates stronger performance in scientific and simulation workloads that rely on FP operations.

The 96th percentile ranking for AMD versus 93rd for Intel reinforces the overall performance gap. AMD's average score of 97,453 is roughly 58% higher than Intel's 61,834. That is a meaningful difference, though the specific benchmark mix matters. Buyers who need maximum multithreaded throughput across varied tasks should choose AMD. Buyers who prioritize single-core speed and FP-heavy applications, or who value Intel's 20 physical cores for workloads that scale with core count rather than threads, should choose Intel.

The R23 multicore result deserves attention because it defies the overall trend. Intel wins that test by 9%, which means certain optimized rendering workloads will perform better on Intel silicon. The PassMark multithread result, however, shows AMD winning by 29.8%, indicating that the two processors have different strengths within the multithreaded category itself.

FAQ

Q: Which processor has the higher single-thread performance?

A: The Intel Core Ultra 7 270HX Plus wins all single-thread tests. It scores 5,917 in Cinebench R23 single-core versus AMD's 2,159.5, a 63.5% margin, and 596 versus 332 in Cinebench R15 single-core. PassMark single-thread also goes to Intel, 4,764 versus 4,511.

Q: How do the two processors compare in multithreaded benchmarks?

A: AMD wins most multithreaded tests. It leads by 43.1% in Cinebench R15 multicore, 29.8% in PassMark multithread, and 22% in PassMark physics. Intel wins Cinebench R23 multicore by 9%, scoring 41,913 versus 38,161.5.

Q: Which CPU is better for data compression and encryption?

A: AMD dominates both. Data compression scores 785,811 versus 493,179, a 59.3% advantage. Data encryption is closer but still favors AMD, 39,446 versus 37,813, a 4.3% margin.

Q: What are the core and thread counts for each processor?

A: The AMD Ryzen 9 9955HX3D has 16 cores and 32 threads. The Intel Core Ultra 7 270HX Plus has 20 cores and 20 threads. Intel has more physical cores, but AMD has more threads overall due to simultaneous multithreading.

Q: How do the cache configurations differ?

A: AMD uses 80 KB L1 per core, 1 MB L2 per core, and 128 MB L3 cache. Intel uses 192 KB L1 per core, 3 MB L2 per core, and 30 MB shared L3. AMD's L3 is more than four times larger.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 9 9955HX3D boosts to 5.40 GHz, while the Intel Core Ultra 7 270HX Plus boosts to 5.30 GHz. AMD's base clock is also slightly higher at 2.50 GHz versus Intel's 2.40 GHz.

Specification Differences

The two processors differ in several core specifications. AMD offers 16 cores and 32 threads, while Intel provides 20 cores and 20 threads. Base clocks are 2.50 GHz for AMD and 2.40 GHz for Intel. Boost clocks are 5.40 GHz for AMD and 5.30 GHz for Intel. Both have a 55 W TDP.

The sockets are different: AMD uses AMD Socket FL1, while Intel uses Intel BGA 2114. Memory support is DDR5 for both, with dual-channel buses. Memory bandwidth differs, with AMD at 89.6 GB/s and Intel at 102.4 GB/s. ECC memory support is present on AMD but absent on Intel.

PCIe lanes differ: AMD provides Gen 5 with 28 lanes (CPU only), while Intel provides Gen 5 with 20 lanes (CPU only). Integrated graphics also differ: AMD uses Radeon 610M, Intel uses Arc Xe-LPG Graphics 64EU. Both have unlocked multipliers. AMD's part number is 100-000001030, Intel's is SADST.

Architecture Differences

The AMD Ryzen 9 9955HX3D is built on Zen 5 architecture with the Fire Range codename. It belongs to the 9000 series and the Ryzen 9 generation. The process node is 4 nm, fabricated by TSMC. AMD uses 16,630 million transistors on a die size of 2x 70.6 mm². The cache hierarchy is notable: 80 KB L1 per core, 1 MB L2 per core, and a massive 128 MB L3 cache, which is characteristic of the X3D line's 3D V-Cache implementation.

The Intel Core Ultra 7 270HX Plus uses Arrow Lake-HX Refresh codename, part of Core Ultra Series 2 and the Ultra 7 generation. The process node is 3 nm, also fabricated by TSMC. Intel uses 17,800 million transistors on a single 243 mm² die. The cache layout differs significantly: 192 KB L1 per core, 3 MB L2 per core, and 30 MB shared L3. Intel's L2 cache is three times larger per core, but its L3 is much smaller than AMD's.

Architecturally, AMD's approach pairs fewer physical cores with simultaneous multithreading, resulting in 32 threads. Intel opts for more physical cores without hyperthreading, yielding 20 threads. The 3D V-Cache on AMD provides the large L3 that drives its strong performance in cache-sensitive workloads like integer math and compression. Intel's smaller L3 but larger per-core L1 and L2 suggests a design optimized for different access patterns.

Both processors use TSMC fabrication, though at different nodes: 4 nm for AMD, 3 nm for Intel. The transistor counts are close, with Intel slightly higher at 17,800 million versus 16,630 million, but AMD achieves its results with a much smaller die area due to the chiplet design. Intel's monolithic 243 mm² die contrasts with AMD's dual 70.6 mm² dies, reflecting different manufacturing strategies within the same foundry relationship.