AMD Ryzen Threadripper PRO 9975WX vs Intel Xeon 6740P Comparison

The AMD Ryzen Threadripper PRO 9975WX decisively outperforms the Intel Xeon 6740P in the majority of benchmark comparisons, winning 14 of 16 head-to-head tests, with the Intel chip taking only two specific workloads. The AMD part posts a commanding 48.2% lead in single-threaded performance and a 25% advantage across all Cinebench tests, though the Xeon 6740P counters with significant wins in physics and prime number finding workloads.

Head-to-Head Benchmarks

The most striking result is in single-thread performance, where the Ryzen Threadripper PRO 9975WX scores 4408 in PassMark's single-thread test versus 2975 for the Xeon 6740P — a 48.2% advantage. This pattern repeats across Cinebench single-core tests: the AMD chip delivers 1331 in Cinebench R15 single-core against 1065 (25% higher), and 5546 in Cinebench R20 single-core versus 4438 (also 25% higher). The 5.40 GHz boost clock of the AMD part, compared to 3.80 GHz on the Intel, underpins this substantial per-thread advantage.

Multi-core results tell a similar story with consistent 25% deltas in favor of AMD. Cinebench R23 multi-core shows 93553 for the Threadripper PRO 9975WX versus 74851 for the Xeon 6740P. The Cinebench R15 multi-core score is 9430 against 7544, and R20 multi-core is 39292 versus 31437. In PassMark's multithread test, the AMD chip scores 104902 against 88061, a 19.1% margin. The average benchmark score reinforces this: 182700 for AMD versus 176227 for Intel, a 3.7% overall difference.

Integer math and extended instructions show strong AMD wins. PassMark integer math scores 461724 for the Threadripper versus 388500 for the Xeon, an 18.8% advantage. Extended instructions come in at 137733 versus 116992, a 17.7% gap. Data compression favors AMD at 1644573 versus 1537129 (7%), and random string sorting goes to AMD at 188014 versus 175015 (7.4%). Floating point math is closer, with AMD leading 304833 to 296102 (2.9%), and data encryption shows AMD ahead 85035 to 82028 (3.7%).

The Intel Xeon 6740P wins two tests. PassMark physics shows 9705 for Intel versus 7288 for AMD, a 24.9% advantage. PassMark find prime numbers gives Intel 822 versus 620 for AMD, a 24.6% edge. These wins indicate specific computational strengths for the Intel architecture, despite losing the overall benchmark count.

Architecture Differences

The fundamental architectural split is node and core design. The AMD Ryzen Threadripper PRO 9975WX uses TSMC's 4 nm process with the Zen 5 architecture, codenamed Shimada Peak. The Intel Xeon 6740P uses Intel's 5 nm process with the Granite Rapids architecture. The AMD chip packs 33,260 million transistors across a 4x 70.6 mm² die configuration, while the Intel part uses a 2x 598 mm² die setup.

Core counts differ significantly, with the Xeon 6740P featuring 48 cores and 96 threads versus 32 cores and 64 threads for the Threadripper. However, the AMD chip compensates with much higher clock speeds: 4.00 GHz base and 5.40 GHz boost versus 2.10 GHz base and 3.80 GHz boost for Intel. This clock advantage helps explain the AMD single-thread dominance.

Cache hierarchies diverge notably. The AMD processor provides 64 KB L1 and 1 MB L2 per core, with 128 MB of L3 cache. The Intel Xeon offers 112 KB L1 and 2 MB L2 per core, with a larger 288 MB shared L3 cache. The Intel part's larger L3 and higher core count may contribute to its physics and prime number wins.

Memory support is identical in capacity: both use DDR5 with eight-channel memory buses and 409.6 GB/s bandwidth, and both support ECC memory. PCIe connectivity differs, with AMD offering Gen 5 with 128 lanes (CPU only) versus Intel's Gen 5 with 88 lanes (CPU only). The AMD processor has an unlocked multiplier, while the Intel part is locked.

Where Each One Wins

The AMD Ryzen Threadripper PRO 9975WX dominates productivity and general compute workloads. Its 25% margins across all Cinebench versions, both single and multi-core, make it the clear choice for rendering, 3D modeling, and CPU-bound creative applications. The 48.2% single-thread lead translates directly to snappier application responsiveness and better performance in lightly threaded software. Integer math and extended instruction workloads — common in video encoding, scientific calculations, and data processing — favor AMD by 18.8% and 17.7% respectively.

The Intel Xeon 6740P wins in two specific areas: physics simulation and prime number calculation. The 24.9% physics advantage suggests strength in simulation workloads that leverage the Intel architecture's 48 cores and 288 MB L3 cache. Prime number finding, a stress test for integer throughput and cache efficiency, shows a 24.6% Intel edge. These wins indicate that for specialized HPC-style workloads focused on mathematical operations and physics modeling, the Xeon 6740P holds its own.

For multi-threaded throughput, the AMD processor still leads despite having fewer cores. The 19.1% PassMark multithread advantage shows that the Threadripper's higher clocks and Zen 5 efficiency overcome the Xeon's 50% core count advantage. Data compression, encryption, and random string sorting all favor AMD with margins between 3.7% and 7.4%.

Specification Differences

| Specification | AMD Ryzen Threadripper PRO 9975WX | Intel Xeon 6740P |

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

| Cores | 32 | 48 |

| Threads | 64 | 96 |

| Base Clock | 4.00 GHz | 2.10 GHz |

| Boost Clock | 5.40 GHz | 3.80 GHz |

| TDP | 350 W | 270 W |

| Process Node | 4 nm (TSMC) | 5 nm (Intel) |

| L1 Cache | 64 KB (per core) | 112 KB (per core) |

| L2 Cache | 1 MB (per core) | 2 MB (per core) |

| L3 Cache | 128 MB | 288 MB (shared) |

| PCIe Lanes | Gen 5, 128 (CPU only) | Gen 5, 88 (CPU only) |

| Socket | AMD Socket sTR5 | Intel Socket 4710 |

| Multiplier | Unlocked | Locked |

| Release Date | 2025-07-22 | 2025-02-23 |

The TDP difference is notable: 350 W for AMD versus 270 W for Intel. The AMD chip is newer, releasing in July 2025 compared to February 2025 for Intel. Both support DDR5 memory with eight-channel buses and 409.6 GB/s bandwidth.

FAQ

Q: Which processor has better single-thread performance?

A: The AMD Ryzen Threadripper PRO 9975WX wins decisively with a 48.2% higher PassMark single-thread score (4408 versus 2975) and 25% higher scores across all Cinebench single-core tests.

Q: Does the Intel Xeon 6740P win any benchmarks?

A: Yes, the Intel part wins PassMark physics (9705 versus 7288, 24.9% higher) and PassMark find prime numbers (822 versus 620, 24.6% higher).

Q: How do core counts compare between the two?

A: The Intel Xeon 6740P has 48 cores and 96 threads, while the AMD Ryzen Threadripper PRO 9975WX has 32 cores and 64 threads.

Q: What are the memory specifications?

A: Both processors support DDR5 memory with eight-channel buses and identical 409.6 GB/s bandwidth, and both support ECC memory.

Q: Which processor has a larger L3 cache?

A: The Intel Xeon 6740P has 288 MB of shared L3 cache, compared to 128 MB for the AMD Ryzen Threadripper PRO 9975WX.

Q: What is the overall benchmark score difference?

A: The AMD chip has an average benchmark score of 182700 versus 176227 for Intel, a 3.7% advantage. The AMD part sits in the 98th percentile, and the Intel part also sits in the 98th percentile.

The Verdict

The data clearly favors the AMD Ryzen Threadripper PRO 9975WX for almost all workloads. With 14 benchmark wins out of 16, the AMD processor delivers superior performance in rendering, general productivity, data compression, encryption, integer math, extended instructions, and single-threaded tasks. The 25% margins across every Cinebench test make it the obvious choice for creators, engineers, and professionals running CPU-intensive applications. The 48.2% single-thread advantage is particularly compelling for mixed workloads where not every thread can be utilized.

However, the Intel Xeon 6740P has a place for specialized workloads. Its 24.9% physics advantage and 24.6% prime number win suggest that simulation-heavy HPC environments, particularly those involving physics calculations or mathematical modeling that stress cache and core count, may benefit from the Intel part despite its lower overall benchmark scores. The Xeon's 48 cores and 288 MB L3 cache appear to provide an edge in these specific scenarios.

The choice comes down to workload type. For general-purpose workstation and server tasks, the AMD Ryzen Threadripper PRO 9975WX is the stronger performer with higher clock speeds, better single-thread efficiency, and broader benchmark dominance. For physics-based simulation and prime-number-heavy mathematical workloads where the Intel architecture's core count and large cache provide measurable wins, the Xeon 6740P offers specific advantages. The AMD chip's unlocked multiplier adds flexibility for overclocking, though its higher 350 W TDP versus 270 W for Intel means thermal and power considerations differ. Given the overwhelming benchmark advantage, the AMD Ryzen Threadripper PRO 9975WX is the recommended choice for most users, with the Intel Xeon 6740P reserved for niche simulation workloads where its specific wins matter most.