AMD Ryzen Threadripper PRO 9955WX vs Intel Xeon w7-3565X Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall victory for the Intel Xeon w7-3565X, winning 15 of the 17 head-to-head comparisons. The AMD Ryzen Threadripper PRO 9955WX takes only two wins, both in the PassMark single-thread tests. The Intel part's advantage is consistent across both Cinebench and PassMark suites, though the margin varies widely by workload type.

In the Cinebench series, the Intel Xeon w7-3565X leads by a narrow but uniform 0.9% in every test: R15 multicore (6052 vs 5996), R15 single-core (854 vs 846), R20 multicore (25218 vs 24987), R20 single-core (3560 vs 3527), R23 multicore (60045 vs 59494), and R23 single-core (8477 vs 8399). These are near-ties in practical terms, but the Intel processor edges ahead in every rendering scenario measured.

The PassMark suite reveals where the Intel Xeon w7-3565X truly separates itself. The largest gap appears in floating-point math, where Intel scores 218720 against AMD's 156215, a 40% advantage. Integer math also favors Intel decisively at 279202 vs 236120, an 18.2% delta. Data encryption shows a 23.2% lead for Intel (54676 vs 44389), while data compression favors Intel by 16.8% (1075602 vs 920954). Prime number finding goes to Intel by 18.1% (398 vs 337), and extended instructions by 12.4% (85856 vs 76363). Random string sorting shows an 11.1% Intel edge (110848 vs 99813), and the multithread score lands at 70642 vs 67035, a 5.4% margin. Physics simulation is closer at 4254 vs 4156, a 2.4% Intel advantage.

The AMD Ryzen Threadripper PRO 9955WX's counter-punch comes in PassMark single-thread performance, where it posts 4530 versus Intel's 3407, a 24.8% lead. This is the only area where AMD shows a substantial edge, and it is meaningful for lightly threaded workloads.

Looking at the broader database context, the Intel Xeon w7-3565X sits at the 97th percentile among all CPUs, with an average benchmark score of 118307. Its nearest rivals include the AMD EPYC 9255 (1.6% behind), the Intel Xeon 658X (1.9% behind), and the Intel Xeon 6527P (2.7% behind), while the AMD EPYC 9384X sits 1.8% ahead. The AMD Ryzen Threadripper PRO 9955WX also holds the 97th percentile, averaging 101041, with rivals such as the AMD EPYC 7513 (1.2% ahead), the AMD EPYC 4585PX (1.7% behind), and the AMD Ryzen Threadripper PRO 5965WX (2.6% behind). The average score gap between the two compared parts is roughly 17%, favoring Intel.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Xeon w7-3565X is built on Sapphire Rapids, a 10 nm Intel process, while the AMD Ryzen Threadripper PRO 9955WX uses Zen 5 architecture on a 4 nm TSMC node. The AMD part's process advantage is visible in its die size: two chiplets at 70.6 mm² each, versus Intel's four-die design totaling 4x 477 mm². AMD also lists 16,630 million transistors, a figure Intel does not report.

Core counts diverge sharply. The Intel Xeon w7-3565X packs 32 cores and 64 threads, while the AMD Ryzen Threadripper PRO 9955WX offers 16 cores and 32 threads. This explains why Intel dominates multi-threaded PassMark tests despite AMD's higher clock speeds. The AMD part runs at a 4.50 GHz base and 5.40 GHz boost, compared to Intel's 2.50 GHz base and 4.80 GHz boost. The higher AMD boost clock directly accounts for its single-thread PassMark victory.

Cache hierarchies also differ. Intel provides 80 KB of L1 per core, 2 MB of L2 per core, and 82.5 MB of L3. AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. The Intel part's larger L3 is notable for data-heavy workloads, though AMD's smaller per-core L2 may suffice given its fewer cores. Both support DDR5 memory with eight channels, but AMD's memory bandwidth is rated at 409.6 GB/s versus Intel's 307.2 GB/s, a 33% advantage.

PCIe connectivity is another differentiator. Intel supports Gen 5 with 112 lanes (CPU only), while AMD offers Gen 5 with 128 lanes (CPU only). Both parts have no integrated graphics, both support ECC memory, and both have unlocked multipliers. The Intel part targets the Server/Workstation segment, while AMD positions this part for Desktop. Power envelopes are similar: 335 W TDP for Intel, 350 W for AMD.

The Verdict

The data points to a clear split: the Intel Xeon w7-3565X is the stronger all-around performer, winning 15 of 17 benchmarks and holding a 17% average score advantage. Its 32 cores overwhelm AMD's 16 cores in every multi-threaded PassMark test, with margins ranging from 2.4% in physics to 40% in floating-point math. The Cinebench results are nearly identical, but Intel still edges every one by 0.9%.

The AMD Ryzen Threadripper PRO 9955WX wins decisively in single-thread PassMark performance, 4530 vs 3407, a 24.8% lead. This is the sole bright spot, and it matters for applications that scale poorly across cores. However, the AMD part's higher boost clock, smaller core count, and 4 nm process do not translate into wins outside that single-thread test.

For users who prioritize multi-threaded throughput, especially in math, encryption, compression, and sorting workloads, the Intel Xeon w7-3565X is the better choice based on recorded measurements. For users whose workloads are dominated by single-threaded tasks, the AMD part holds a clear advantage. The Intel processor also offers a higher percentile standing relative to its immediate rivals, though both sit at the 97th percentile overall.

FAQ

Q: Which processor wins more benchmarks?

A: The Intel Xeon w7-3565X wins 15 of 17 head-to-head comparisons. The AMD Ryzen Threadripper PRO 9955WX wins only the two PassMark single-thread tests.

Q: How big is the single-thread performance gap?

A: The AMD Ryzen Threadripper PRO 9955WX scores 4530 in PassMark single-thread versus Intel's 3407, a 24.8% advantage.

Q: Where does Intel show its largest lead?

A: Intel's biggest margin is in PassMark floating-point math, scoring 218720 versus AMD's 156215, a 40% difference. Data encryption follows at 23.2% (54676 vs 44389).

Q: Do the Cinebench results favor either processor?

A: Intel wins every Cinebench test (R15, R20, R23, both multi and single-core) by 0.9%. The scores are close: R23 multicore is 60045 vs 59494, and R23 single-core is 8477 vs 8399.

Q: What are the core and thread counts?

A: The Intel Xeon w7-3565X has 32 cores and 64 threads. The AMD Ryzen Threadripper PRO 9955WX has 16 cores and 32 threads.

Q: How do the memory bandwidth figures compare?

A: AMD rates its memory bandwidth at 409.6 GB/s, while Intel rates its at 307.2 GB/s. Both support DDR5 with eight channels.

Where Each One Wins

The Intel Xeon w7-3565X wins in every multi-threaded workload recorded. Data compression (1075602 vs 920954), data encryption (54676 vs 44389), extended instructions (85856 vs 76363), prime number finding (398 vs 337), floating-point math (218720 vs 156215), integer math (279202 vs 236120), multithread score (70642 vs 67035), physics (4254 vs 4156), and random string sorting (110848 vs 99813) all go to Intel. The margins range from 2.4% to 40%, with the largest gaps in math-heavy operations. This makes the Intel part the pick for compute-intensive, parallel tasks like scientific simulation, encryption, and data processing.

The AMD Ryzen Threadripper PRO 9955WX wins exclusively in single-thread PassMark performance, scoring 4530 versus Intel's 3407. This 24.8% lead is substantial and directly tied to its 5.40 GHz boost clock versus Intel's 4.80 GHz. For applications that rely on a single core, such as certain legacy software or lightly threaded engineering tools, the AMD part offers measurably better responsiveness. The Cinebench single-core tests are effectively tied, with Intel ahead by only 0.9%, so the AMD advantage is specific to the PassMark single-thread methodology rather than a general single-core rule.

Specification Differences

The two processors differ across nearly every major specification. The Intel Xeon w7-3565X uses 32 cores and 64 threads, while the AMD Ryzen Threadripper PRO 9955WX uses 16 cores and 32 threads. Base clocks are 2.50 GHz for Intel and 4.50 GHz for AMD; boost clocks are 4.80 GHz and 5.40 GHz respectively. TDP is 335 W for Intel and 350 W for AMD. The Intel part fits Intel Socket 4677, while AMD uses AMD Socket sTR5. Intel's process node is 10 nm, AMD's is 4 nm. The Intel die size is 4x 477 mm², AMD's is 2x 70.6 mm². Transistors are listed at 16,630 million for AMD only. Cache: Intel has 80 KB L1 per core, 2 MB L2 per core, and 82.5 MB L3; AMD has 64 KB L1 per core, 1 MB L2 per core, and 64 MB L3. Memory bandwidth: Intel 307.2 GB/s, AMD 409.6 GB/s. PCIe lanes: Intel Gen 5, 112 lanes; AMD Gen 5, 128 lanes. Market segment: Intel is Server/Workstation, AMD is Desktop. Release dates differ: Intel launched on 2024-08-23, AMD on 2025-07-22. The Intel launch MSRP is $2689. Both have unlocked multipliers, no integrated graphics, and ECC memory support.