AMD Ryzen Threadripper PRO 9955WX vs Intel Xeon 6527P Comparison

Head-to-Head Benchmarks

The benchmark data presents a clear split between these two processors. The Intel Xeon 6527P wins 14 of the 17 recorded head-to-head tests, while the AMD Ryzen Threadripper PRO 9955WX takes 3 victories. The margin of victory varies dramatically by workload type.

Starting with the Cinebench suite, the Intel Xeon 6527P shows a consistent 6.4% advantage across all six tests. In Cinebench R15 multi-core, the Xeon scores 6378 against 5996 for the AMD. The single-core test shows a similar pattern: 900 versus 846. This 6.4% delta repeats exactly for R20 and R23, both multi-core and single-core variants. The consistency suggests a fundamental throughput advantage for the Intel part in these rendering workloads, likely tied to its higher core count.

The gap widens substantially in several PassMark tests. The largest margin appears in PassMark physics, where the Xeon scores 8037 against only 4156 for the Threadripper, a 93.4% difference. This is an almost doubled result. Data encryption also favors Intel heavily: 60333 versus 44389, a 35.9% lead. Random string sorting shows a 31.8% advantage for Intel (131597 versus 99813). Floating point math favors Intel at 24.8% (195005 versus 156215). Integer math is 13.9% in favor of the Xeon (268985 versus 236120). Data compression is 11.9% ahead (1030818 versus 920954), and the multi-thread PassMark score is 11.1% higher for the Intel part (74445 versus 67035). Even prime number finding, often a strength for high-core-count parts, shows Intel ahead by 50.7% (508 versus 337).

The AMD Ryzen Threadripper PRO 9955WX does not go winless. It wins PassMark extended instructions by a 6.2% margin (76363 versus 71600). More importantly, it dominates in the single-thread tests. PassMark single thread shows 4530 for the AMD against 3539 for the Intel, a 21.9% advantage. This is the largest single-test delta in either direction. The same 21.9% figure appears for the duplicate singlethread entry. These wins are notable because they show a different performance profile, favoring clock speed and per-core efficiency over raw core count.

FAQ

Q: Which processor wins more benchmarks?

The Intel Xeon 6527P wins 14 out of 17 head-to-head tests. The AMD Ryzen Threadripper PRO 9955WX wins 3 tests.

Q: How large is the Intel advantage in multi-core workloads?

In Cinebench R23 multi-core, the Intel scores 63,278 versus 59,494 for the AMD, a 6.4% lead. In PassMark multi-thread, the lead is 11.1% (74,445 versus 67,035).

Q: Where does the AMD processor outperform the Intel processor?

A: The AMD wins in PassMark single-thread tests by 21.9% (4,530 versus 3,539) and in extended instructions by 6.2% (76,363 versus 71,600).

Q: What is the largest performance gap in the comparison?

A: The largest gap is in PassMark physics, where the Intel Xeon scores 8,037 versus 4,156 for the AMD, a 93.4% difference.

Q: How do these parts compare to their nearest rivals?

A: The Intel Xeon 6527P sits at the 97th percentile, with an average benchmark score of 115,190. It is 0.7% below the Intel Xeon 658X and 1.0% below the AMD EPYC 9255. The AMD Ryzen Threadripper PRO 9955WX also sits at the 97th percentile, with an average of 101,041. It is 2.6% above the AMD Ryzen Threadripper PRO 5965WX.

The Verdict

The data points to a clear choice for heavily threaded, throughput-oriented workloads. The Intel Xeon 6527P should be selected for tasks that demand the highest multi-threaded scores, particularly in physics simulation, encryption, and data compression. Its 93.4% lead in PassMark physics and 35.9% lead in data encryption make it the dominant part in those specific areas.

The AMD Ryzen Threadripper PRO 9955WX is the choice for workloads that are limited by single-thread performance or require advanced instruction set efficiency. The 21.9% lead in single-thread PassMark is a decisive advantage for lightly threaded applications or older software that scales poorly across cores. Its 6.2% win in extended instructions also suggests a better fit for code that uses modern vector instruction sets.

Neither processor is a universal winner. The database shows the Intel part as the performance leader in the majority of tests, but the AMD part offers a specific profile that may be better for certain niche applications. The choice should be based on whether the workload favors the Intel's broad multi-core dominance or the AMD's single-thread and AVX-512 capabilities.

Specification Differences

The two processors differ in several core specifications. The Intel Xeon 6527P has 24 cores and 48 threads, while the AMD Ryzen Threadripper PRO 9955WX has 16 cores and 32 threads. The Intel base clock is 3.00 GHz with a boost of 4.20 GHz. The AMD base clock is 4.50 GHz with a boost of 5.40 GHz. The Intel TDP is 255 W, while the AMD TDP is 350 W. The Intel socket is Intel Socket 4710, while the AMD uses AMD Socket sTR5. The Intel part is a Server/Workstation segment part, while the AMD is listed as a Desktop segment part. The AMD is multiplier unlocked, while the Intel is not. The Intel has a launch MSRP of $2878, while the AMD has a launch MSRP of $1649. The Intel was released on 2025-02-23, while the AMD was released on 2025-07-22.

Architecture Differences

The processors come from different architectural designs. The Intel Xeon 6527P uses Granite Rapids architecture, built on a 5 nm process node by Intel. The AMD Ryzen Threadripper PRO 9955WX uses Zen 5 architecture, codenamed Shimada Peak, built on a 4 nm process node by TSMC. The Intel has an L1 cache of 112 KB per core, while the AMD has 64 KB per core. The Intel L2 cache is 2 MB per core, while the AMD has 1 MB per core. The Intel L3 cache is 144 MB shared, while the AMD has 64 MB. The Intel has a die size of 598 mm², while the AMD has two dies of 70.6 mm² each (2x 70.6 mm²). The AMD has 16,630 million transistors, while the Intel transistor count is not recorded. Both support DDR5 memory and have eight-channel memory buses, with identical memory bandwidth of 409.6 GB/s. Both support ECC memory. The Intel has 88 PCIe Gen 5 lanes (CPU only), while the AMD has 128 PCIe Gen 5 lanes (CPU only). Neither has integrated graphics.

Where Each One Wins

Intel Xeon 6527P Wins

• Multi-core rendering: 6.4% ahead in all Cinebench R15, R20, and R23 multi-core tests.
• Encryption: 35.9% faster in PassMark data encryption.
• Physics simulation: 93.4% faster in PassMark physics.
• Floating point math: 24.8% faster in PassMark floating point math.
• Integer math: 13.9% faster in PassMark integer math.
• Data compression: 11.9% faster in PassMark data compression.
• Random string sorting: 31.8% faster in PassMark random string sorting.
• Prime number finding: 50.9% faster in PassMark find prime numbers.
• General multi-thread: 11.1% faster in PassMark multi-thread.

AMD Ryzen Threadripper PRO 9955WX Wins

• Single-thread: 21.9% faster in PassMark single-thread tests.
• Extended instructions: 6.2% faster in PassMark extended instructions.

The data indicates the Intel Xeon 6527P is the choice for heavily threaded server or workstation tasks, particularly those involving cryptography, physics simulation, and data handling. The AMD Ryzen Threadripper PRO 9955WX excels at single-threaded performance and modern instruction set efficiency, making it a better fit for applications that cannot scale across many cores or that rely heavily on AVX-512 type workloads.