AMD Ryzen 9 PRO 9965 vs AMD Ryzen Threadripper PRO 9975WX Comparison

Head-to-Head Benchmarks

The recorded data paints a clear picture: the AMD Ryzen Threadripper PRO 9975WX dominates the AMD Ryzen 9 PRO 9965 in nearly every measured workload, taking 9 of 11 head-to-head benchmarks. The largest margin comes in PassMark physics, where the Threadripper scores 7288 against the Ryzen 9's 3256, a 123.8% advantage. That result reflects the massive scaling advantage of 32 cores versus 16, and it is the kind of margin that separates workstation-class silicon from a high-end desktop part.

Random string sorting is another decisive win. The Threadripper PRO 9975WX posts 188014, while the Ryzen 9 PRO 9965 manages 94915, a 98.1% delta. The pattern repeats across extended instructions, floating point math, and integer math. In PassMark extended instructions, the Threadripper scores 137733 versus 71210, a 93.4% lead. Floating point math shows 304833 against 160746, an 89.6% gap, and integer math lands at 461724 versus 243280, a 89.8% difference. These are near-doubling results, and they track directly with the core and thread count disparity.

Data encryption favors the Threadripper PRO 9975WX by 89.3%, with scores of 85035 versus 44920. Data compression is slightly closer in relative terms, but still a decisive win: 1644573 versus 908293, an 81.1% advantage. The multithread benchmark shows a 57.4% lead, with 104902 versus 66655. Even the prime number finding test, which often rewards high clock speeds, goes to the Threadripper by 70.3%, 620 versus 364.

The single exception is single-thread performance. Here, the Ryzen 9 PRO 9965 takes the win with 4682 against the Threadripper's 4408, a 5.9% edge. That result appears in both PassMark single-thread and single-thread variants, confirming it is not an anomaly. The Ryzen 9's higher boost clock of 5.50 GHz versus 5.40 GHz explains part of the gap, though both parts share the same Zen 5 architecture and 4 nm process node.

Context from the broader database reinforces the Threadripper's standing. Its average benchmark score of 182700 places it at the 98th percentile of all CPUs. Its nearest rivals include the AMD EPYC 8534P, which scores 185092 on average, putting the Threadripper 1.3% behind, and the Intel Xeon 6740E at 187718, a 2.7% gap. Against the AMD EPYC 7763, the Threadripper leads by 1.5%, and it beats the Intel Xeon 6740P by 3.7%. This is not just a win over the Ryzen 9 PRO 9965; it is a part trading blows with dual-socket-class EPYC and Xeon silicon.

The Ryzen 9 PRO 9965, for its part, also sits at the 98th percentile, with an average score of 145728. Its nearest rival is the AMD Ryzen Threadripper PRO 9965WX at 147009, a 0.9% gap, and the AMD EPYC 8434P at 146881, a 0.8% difference. It holds a 0.6% lead over the AMD EPYC 7643P and a 1% edge over the Intel Xeon w9-3575X. In other words, the Ryzen 9 PRO 9965 is a strong performer in its own right, but it operates in a different performance class than the Threadripper PRO 9975WX.

Architecture Differences

Both processors share the Zen 5 architecture and are built on TSMC's 4 nm process node, but the similarities end there. The Threadripper PRO 9975WX uses the Shimada Peak codename and fits the Ryzen Threadripper generation, while the Ryzen 9 PRO 9965 uses the Granite Ridge codename and belongs to the Ryzen 9 generation.

The core counts diverge sharply. The Threadripper PRO 9975WX packs 32 cores and 64 threads, while the Ryzen 9 PRO 9965 offers 16 cores and 32 threads. That doubling of compute resources is the primary driver behind the benchmark gaps. Transistor counts reflect the difference: the Threadripper carries 33,260 million transistors across four 70.6 mm² dies, while the Ryzen 9 has 16,630 million across two 70.6 mm² dies. The die size per chiplet is identical, but the Threadripper uses twice as many chiplets.

Cache hierarchies also differ. The Threadripper PRO 9975WX has 64 KB of L1 per core, 1 MB of L2 per core, and 128 MB of L3 cache. The Ryzen 9 PRO 9965 has 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. The Threadripper's larger L3 pool is a direct consequence of its additional chiplets, and it matters for workloads with large working sets.

Memory subsystems are a major differentiator. The Threadripper PRO 9975WX supports DDR5 over an eight-channel memory bus, yielding 409.6 GB/s of bandwidth. The Ryzen 9 PRO 9965 also supports DDR5, but over a dual-channel bus, capping bandwidth at 89.6 GB/s. That is a 4.6x difference in theoretical memory bandwidth, and it will show up in memory-bound workloads such as large dataset processing or virtual machine density.

PCIe lanes differ as well. The Threadripper PRO 9975WX provides 128 Gen 5 lanes from the CPU, while the Ryzen 9 PRO 9965 provides 24 Gen 5 lanes. For multi-GPU configurations, high-speed storage arrays, or network cards, the Threadripper offers far more expansion headroom.

The sockets are incompatible. The Threadripper PRO 9975WX uses AMD Socket sTR5, while the Ryzen 9 PRO 9965 uses AMD Socket AM5. The Threadripper also has an unlocked multiplier, whereas the Ryzen 9 PRO 9965 does not. Integrated graphics differentiate the two: the Ryzen 9 PRO 9965 includes Radeon Graphics, while the Threadripper PRO 9975WX has none. Both support ECC memory.

Power envelopes reflect the performance gap. The Threadripper PRO 9975WX has a 350 W TDP, while the Ryzen 9 PRO 9965 is rated at 170 W. Base clocks are 4.00 GHz for the Threadripper and 4.30 GHz for the Ryzen 9; boost clocks are 5.40 GHz and 5.50 GHz, respectively.

FAQ

Q: Which processor is faster in single-threaded workloads?

A: The AMD Ryzen 9 PRO 9965 wins the PassMark single-thread benchmark with 4682 versus 4408 for the AMD Ryzen Threadripper PRO 9975WX, a 5.9% advantage.

Q: How much faster is the Threadripper in multithreaded tests?

A: The Threadripper PRO 9975WX leads the PassMark multithread benchmark by 57.4%, scoring 104902 against the Ryzen 9 PRO 9965's 66655.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen Threadripper PRO 9975WX and the AMD Ryzen 9 PRO 9965 support ECC memory.

Q: What is the memory bandwidth difference?

A: The Threadripper PRO 9975WX supports eight-channel DDR5 with 409.6 GB/s of bandwidth, while the Ryzen 9 PRO 9965 uses dual-channel DDR5 with 89.6 GB/s.

Q: Do both chips have integrated graphics?

A: No. The Ryzen 9 PRO 9965 includes Radeon Graphics, while the Threadripper PRO 9975WX has no integrated graphics.

Q: Which CPU has more PCIe lanes?

A: The Threadripper PRO 9975WX provides 128 Gen 5 lanes from the CPU, compared to 24 Gen 5 lanes for the Ryzen 9 PRO 9965.

Specification Differences

| Specification | AMD Ryzen Threadripper PRO 9975WX | AMD Ryzen 9 PRO 9965 |

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

| Cores | 32 | 16 |

| Threads | 64 | 32 |

| Base clock | 4.00 GHz | 4.30 GHz |

| Boost clock | 5.40 GHz | 5.50 GHz |

| TDP | 350 W | 170 W |

| Socket | AMD Socket sTR5 | AMD Socket AM5 |

| Codename | Shimada Peak | Granite Ridge |

| Transistors | 33,260 million | 16,630 million |

| Die size | 4x 70.6 mm² | 2x 70.6 mm² |

| L1 cache | 64 KB (per core) | 80 KB (per core) |

| L3 cache | 128 MB | 64 MB |

| Memory bus | Eight-channel | Dual-channel |

| Memory bandwidth | 409.6 GB/s | 89.6 GB/s |

| PCIe | Gen 5, 128 Lanes (CPU only) | Gen 5, 24 Lanes (CPU only) |

| Integrated graphics | N/A | Radeon Graphics |

| Multiplier | Unlocked | Locked |

| Launch MSRP | $4099 | Not available |

Where Each One Wins

The AMD Ryzen Threadripper PRO 9975WX is the clear choice for heavily parallel, memory-hungry workstation workloads. Its 32 cores and 64 threads deliver near-doubling performance in integer math, floating point math, extended instructions, and data compression. The 128 MB L3 cache and 409.6 GB/s eight-channel memory bandwidth make it suitable for large-scale simulations, rendering farms, code compilation, and any task that can saturate multiple cores and memory channels. The 128 PCIe Gen 5 lanes provide expansion headroom for multiple GPUs and high-speed storage. Its benchmark results place it alongside EPYC and Xeon-class parts, making it a legitimate alternative to dual-socket servers for certain workloads.

The AMD Ryzen 9 PRO 9965 wins only in single-thread performance, with a 5.9% edge over the Threadripper in PassMark single-thread tests. Its higher boost clock of 5.50 GHz and lighter 170 W TDP make it a more power-efficient option for single-threaded or lightly threaded tasks. The included Radeon Graphics means a discrete GPU is not strictly required for basic display output. The 24 PCIe Gen 5 lanes and dual-channel memory bus are sufficient for mainstream workstation builds, and the AM5 socket offers a more accessible platform. For users who prioritize per-core speed and lower power draw over raw core count, the Ryzen 9 PRO 9965 is the more sensible pick.

The data does not show a middle ground. The Threadripper PRO 9975WX wins 9 of 11 head-to-head benchmarks by margins ranging from 57.4% to 123.8%. The Ryzen 9 PRO 9965 wins the two single-thread tests by a small margin. Any decision between these two parts comes down to whether the workload scales with cores and memory bandwidth. If it does, the Threadripper is the answer. If it does not, the Ryzen 9's single-thread advantage and lower power envelope carry the day.