AMD Ryzen Threadripper PRO 5955WX vs Intel Core Ultra 9 275HX Comparison

Head-to-Head Benchmarks

The benchmark data reveals a split personality between these two processors. The AMD Ryzen Threadripper PRO 5955WX and Intel Core Ultra 9 275HX trade blows across the 19 head-to-head tests, with Intel taking 14 wins and AMD claiming 5. Yet the margins tell a more nuanced story than the raw win count suggests.

Intel's most decisive victory comes in Cinebench R15 single-core, where the Ultra 9 275HX posts 5619.5 against AMD's 4217 — a 25% advantage. The Geekbench multicore test shows a similar gap, with Intel scoring 20795 versus 15834, a 23.9% lead. In floating-point math, Intel absolutely dominates: 191186 against 104377, a 45.4% margin. Prime number finding also heavily favors Intel, 448 versus 248, a 44.6% difference.

AMD's counterpunches are equally emphatic in specific workloads. The Threadripper PRO 5955WX crushes Intel in Cinebench R23 single-core, scoring 5906 against 2204 — a staggering 168% advantage. Cinebench R15 single-core also goes to AMD by 78.1%, with scores of 595 and 334 respectively. The R23 multicore test favors AMD too, 41837 versus 35589, a 17.6% lead. Integer math shows AMD ahead by 19.3% (185168 versus 155218), and data compression goes AMD's way by 13.6% (690994 versus 608381).

The closer contests reveal where these chips are more evenly matched. PassMark extended instructions are nearly identical, with Intel leading by just 0.1% (47016 versus 46952). Random string sorting shows Intel ahead by 6% (74320 versus 69879). The Cinebench R20 tests are interesting: Intel wins both multicore (19899 versus 17571) and single-core (2809 versus 2480), each by 11.7%. Data encryption favors Intel by 9.7% (47112 versus 42524), while PassMark multithread and physics go Intel's way by 11.7% and 12.7% respectively. The overall average benchmark scores are remarkably close: AMD sits at 67868, Intel at 67469 — a 0.6% difference favoring AMD, with both landing in the 94th percentile of all CPUs.

Architecture Differences

The architectural divide between these processors is fundamental. AMD's Threadripper PRO 5955WX is built on the Zen 3 architecture (codename Chagall PRO) from the 5000 series, fabricated on TSMC's 7 nm process with 16,600 million transistors across a 4x 81 mm² die configuration. It runs on AMD Socket WRX8 and targets the Server/Workstation market segment.

Intel's Core Ultra 9 275HX uses the Arrow Lake architecture (codename Arrow Lake-HX) from the Core Ultra Series 2 lineup, fabricated on TSMC's 3 nm process with 17,800 million transistors on a 243 mm² die. It uses Intel BGA 2114 and targets the Mobile segment.

Core configurations differ significantly. AMD offers 16 cores and 32 threads, while Intel provides 24 cores but only 24 threads — meaning Intel's chip lacks simultaneous multithreading. AMD's base clock is 4.00 GHz with a 4.50 GHz boost, while Intel starts at 2.70 GHz but boosts to 5.40 GHz. The TDP figures are dramatically different: AMD draws 280 W versus Intel's 55 W.

Cache hierarchies reflect their different design philosophies. AMD allocates 64 KB L1 and 512 KB L2 per core, with 64 MB of shared L3. Intel provides 192 KB L1 and 3 MB L2 per core, with 36 MB of shared L3. Memory support diverges completely: AMD uses DDR4 with an eight-channel memory bus delivering 204.8 GB/s bandwidth and ECC support, while Intel uses DDR5 with a dual-channel bus at 102.4 GB/s and no ECC. PCIe connectivity also differs: AMD offers Gen 4 with 128 lanes, Intel provides Gen 5 with 20 lanes. Intel integrates Arc Xe-LPG Graphics 64EU; AMD has no integrated graphics. The Intel chip has an unlocked multiplier; AMD's is locked.

Where Each One Wins

The workload split follows the architectural strengths. AMD's Threadripper PRO 5955WX dominates in Cinebench R23 single-core and multicore, suggesting strong sustained performance in rendering tasks that leverage its 32 threads and large 64 MB L3 cache. Its data compression lead (13.6%) and integer math advantage (19.3%) point to database, scientific computing, and content creation workloads that benefit from high memory bandwidth and heavy thread utilization.

Intel's Ultra 9 275HX excels in Cinebench R15 and R20 multicore tests, plus Geekbench multicore, indicating strong burst performance in shorter-duration workloads. The massive floating-point lead (45.4%) and prime number advantage (44.6%) suggest superiority in physics simulations, financial modeling, and cryptographic applications. The 29.5% single-thread PassMark lead and 13.5% Geekbench single-core advantage show Intel wins in lightly-threaded, latency-sensitive tasks.

For workstation users running long renders, AMD's R23 results make it the clear choice. For mobile users or those running mixed workloads with floating-point intensity, Intel's efficiency and FP muscle win out. The 55 W TDP versus 280 W TDP also means Intel can operate in far more constrained thermal environments.

FAQ

Q: Which processor has better overall benchmark scores?

A: The AMD Ryzen Threadripper PRO 5955WX has a slightly higher average benchmark score of 67868 compared to Intel's 67469, a 0.6% difference. Both sit at the 94th percentile of all CPUs.

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

A: Results are inconsistent. AMD wins Cinebench R15 single-core by 78.1% and R23 single-core by 168%, but Intel wins Cinebench R20 single-core by 11.7%, Geekbench single-core by 13.5%, and PassMark single-thread by 29.5%.

Q: What about multi-core performance?

A: Intel wins Cinebench R15 multicore by 25%, R20 multicore by 11.7%, Geekbench multicore by 23.9%, and PassMark multithread by 11.7%. AMD wins Cinebench R23 multicore by 17.6%.

Q: Which chip has more cores and threads?

A: Intel has more cores (24 versus 16), but AMD has more threads (32 versus 24) because AMD supports simultaneous multithreading while Intel does not.

Q: What are the memory architecture differences?

A: AMD uses DDR4 with an eight-channel bus and 204.8 GB/s bandwidth, plus ECC support. Intel uses DDR5 with a dual-channel bus and 102.4 GB/s bandwidth, without ECC.

Q: Which processor supports PCIe Gen 5?

A: Only the Intel Core Ultra 9 275HX supports PCIe Gen 5, providing 20 lanes. The AMD chip supports PCIe Gen 4 with 128 lanes.

The Verdict

The data points to two distinct buyer profiles. Choose the AMD Ryzen Threadripper PRO 5955WX if your primary workloads are long-duration rendering (its 17.6% R23 multicore lead and 168% R23 single-core lead are decisive), data compression heavy tasks (13.6% ahead), or integer math applications (19.3% ahead). The 280 W TDP and workstation socket indicate a desktop-bound, power-unconstrained environment where its 128 PCIe Gen 4 lanes and eight-channel DDR4 memory provide massive I/O and bandwidth headroom.

Choose the Intel Core Ultra 9 275HX for mobile deployments or power-constrained systems, given its 55 W TDP versus AMD's 280 W. Its 45.4% floating-point lead, 44.6% prime number advantage, and 29.5% single-thread lead make it superior for scientific computing, financial workloads, and responsive general use. The 24 cores without hyperthreading still deliver strong multicore results, and the 3 nm process node with 17,800 million transistors offers architectural efficiency.

The near-identical average scores (0.6% apart) mean neither chip is universally "better." AMD wins 5 head-to-head tests, Intel wins 14, but AMD's wins include the largest margin (168% in R23 single-core) while Intel's margins top out at 45.4%. The choice hinges entirely on workload pattern and platform requirements, not raw capability.

Specification Differences

| Specification | AMD Ryzen Threadripper PRO 5955WX | Intel Core Ultra 9 275HX |

|---|---|---|

| Series | 5000 series | Core Ultra Series 2 |

| Cores | 16 | 24 |

| Threads | 32 | 24 |

| Base Clock | 4.00 GHz | 2.70 GHz |

| Boost Clock | 4.50 GHz | 5.40 GHz |

| TDP | 280 W | 55 W |

| Socket | AMD Socket WRX8 | Intel BGA 2114 |

| Architecture | Zen 3 | Arrow Lake |

| Codename | Chagall PRO | Arrow Lake-HX |

| Process Node | 7 nm | 3 nm |

| Foundry | TSMC | TSMC |

| Transistors | 16,600 million | 17,800 million |

| Die Size | 4x 81 mm² | 243 mm² |

| L1 Cache | 64 KB (per core) | 192 KB (per core) |

| L2 Cache | 512 KB (per core) | 3 MB (per core) |

| L3 Cache | 64 MB | 36 MB (shared) |

| Memory Support | DDR4 | DDR5 |

| Memory Bus | Eight-channel | Dual-channel |

| Memory Bandwidth | 204.8 GB/s | 102.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 4, 128 Lanes | Gen 5, 20 Lanes |

| Integrated Graphics | None | Arc Xe-LPG Graphics 64EU |

| Market Segment | Server/Workstation | Mobile |

| Release Date | 2022-03-07 | 2025-01-12 |

| Multiplier Unlocked | No | Yes |

| Part Number | 100-000000447 | SRVFK |