AMD Ryzen Threadripper PRO 9955WX vs Intel Core 9 273PE Comparison

FAQ

Q: Which processor delivers a higher single-thread score in Cinebench R23?

A: The AMD Ryzen Threadripper PRO 9955WX scores 8399 in Cinebench R23 single-core, while the Intel Core 9 273PE scores 4417. The AMD part leads by 90.2%.

Q: How large is the multi-threaded performance gap in PassMark?

A: In PassMark multithread, the AMD Ryzen Threadripper PRO 9955WX scores 67035 versus 36810 for the Intel Core 9 273PE, a difference of 82.1%.

Q: What is the memory bandwidth difference between the two processors?

A: The AMD Ryzen Threadripper PRO 9955WX supports eight-channel DDR5 memory with a bandwidth of 409.6 GB/s. The Intel Core 9 273PE supports dual-channel DDR4 and DDR5 memory with a bandwidth of 89.6 GB/s.

Q: Does the Intel processor include integrated graphics?

A: Yes, the Intel Core 9 273PE includes UHD Graphics 730. The AMD Ryzen Threadripper PRO 9955WX has no integrated graphics (N/A).

Q: What are the socket requirements for each CPU?

A: The AMD Ryzen Threadripper PRO 9955WX uses AMD Socket sTR5, while the Intel Core 9 273PE uses Intel Socket 1700.

Q: Which processor has a higher boost clock?

A: The Intel Core 9 273PE has a boost clock of 5.70 GHz, which is higher than the AMD Ryzen Threadripper PRO 9955WX at 5.40 GHz.

Architecture Differences

The AMD Ryzen Threadripper PRO 9955WX and Intel Core 9 273PE represent fundamentally different platform philosophies. The AMD part uses the Zen 5 architecture under the codename Shimada Peak, fabricated on a 4 nm process by TSMC. The Intel part uses the Bartlett Lake codename with a 10 nm process from Intel. The AMD processor belongs to the 9000 series, while the Intel processor carries the Core 9 designation.

Core counts differ substantially. The AMD chip provides 16 cores and 32 threads, while the Intel chip provides 12 cores and 24 threads. This 4-core, 8-thread gap underpins many of the multi-threaded benchmark deltas. Cache layouts also diverge. The AMD processor offers 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3 cache. The Intel processor offers 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The AMD chip therefore has nearly double the total L3 capacity.

Platform connectivity separates the two even further. The AMD Ryzen Threadripper PRO 9955WX supports PCIe Gen 5 with 128 lanes from the CPU alone. The Intel Core 9 273PE supports PCIe Gen 5 with 16 lanes from the CPU alone. That is an eightfold difference in available CPU lanes. Memory architecture follows the same pattern: the AMD chip uses eight-channel DDR5 with 409.6 GB/s bandwidth, whereas the Intel chip uses dual-channel DDR4 or DDR5 with 89.6 GB/s bandwidth.

Power envelopes reflect the performance positioning. The AMD processor has a TDP of 350 W, while the Intel processor has a TDP of 65 W. The AMD chip also has an unlocked multiplier, whereas the Intel chip is locked. The Intel part integrates UHD Graphics 730, which the AMD part lacks entirely. Both support ECC memory, and both are listed as Active production status with desktop market segment classification. The AMD part uses 16,630 million transistors across a die size of 2x 70.6 mm²; the Intel part has no transistor or die size figures recorded.

Head-to-Head Benchmarks

The AMD Ryzen Threadripper PRO 9955WX wins all 17 recorded head-to-head benchmarks against the Intel Core 9 273PE. The margins vary widely by workload, which reveals where the architectural differences matter most.

In Cinebench tests, the AMD chip dominates across the board. Cinebench R15 multicore shows 5996 versus 3153, a 90.2% lead. Cinebench R15 single-core shows 846 versus 445, also 90.1% ahead. The R20 suite repeats the pattern: multicore 24987 versus 13140 (90.2% delta) and single-core 3527 versus 1855 (90.1% delta). Cinebench R23 multicore delivers 59494 versus 31288 (90.1% delta), and R23 single-core delivers 8399 versus 4417 (90.2% delta). These near-uniform percentages across Cinebench versions suggest the performance ratio is stable across rendering workloads.

PassMark results show even larger spreads in certain tasks. The extended instructions test produces the biggest gap: 76363 for AMD versus 24630 for Intel, a 210% delta. Data compression shows 920954 versus 405885, a 126.9% delta. Random string sorting follows closely at 99813 versus 45098, a 121.3% delta. Data encryption delivers 44389 versus 22719, a 95.4% delta.

Other PassMark tests show smaller but still decisive margins. PassMark multithread scores 67035 versus 36810, an 82.1% delta. Integer math delivers 236120 versus 139410, a 69.4% delta. Find prime numbers scores 337 versus 203, a 66% delta. Floating point math reaches 156215 versus 107884, a 44.8% delta. Physics shows 4156 versus 3120, a 33.2% delta. Single-thread PassMark scores 4530 versus 3650, a 24.1% delta, which is the closest margin in the entire dataset.

The single-thread PassMark result is notable because Cinebench single-core deltas hover near 90%, while PassMark single-thread is only 24.1% apart. This suggests the Intel chip is more competitive in certain latency-sensitive single-threaded tasks, even though the AMD chip still wins. The extended instructions delta of 210% indicates the AMD architecture has a massive advantage in vectorized or specialized instruction workloads.

Specification Differences

The two processors differ across nearly every major specification category. The AMD Ryzen Threadripper PRO 9955WX uses 16 cores and 32 threads; the Intel Core 9 273PE uses 12 cores and 24 threads. Base clocks differ substantially: 4.50 GHz for AMD versus 2.30 GHz for Intel. Boost clocks invert the relationship: 5.40 GHz for AMD versus 5.70 GHz for Intel. The Intel chip boosts higher, but the AMD chip starts from a much higher base.

TDP differs by 285 W: 350 W for AMD versus 65 W for Intel. Sockets are incompatible: AMD Socket sTR5 versus Intel Socket 1700. The process node is 4 nm for AMD (TSMC) versus 10 nm for Intel (Intel foundry). Cache hierarchies differ: the AMD chip has 64 KB L1 per core, 1 MB L2 per core, and 64 MB L3; the Intel chip has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3.

Memory support differs in both channel count and type. AMD uses eight-channel DDR5 only, with 409.6 GB/s bandwidth. Intel uses dual-channel DDR4 and DDR5, with 89.6 GB/s bandwidth. PCIe lane counts differ by 112 lanes: 128 CPU lanes for AMD versus 16 CPU lanes for Intel. The AMD chip has no integrated graphics; the Intel chip has UHD Graphics 730. The AMD multiplier is unlocked; the Intel multiplier is locked.

Release dates differ by roughly eight months. The AMD part launched on 2025-07-22, while the Intel part launches on 2026-03-08. The launch MSRP for the AMD chip is $1649, and the launch MSRP for the Intel chip is $549. The AMD part number is 100-000000725; the Intel part number is SA4QD. Transistor count and die size are recorded only for the AMD chip: 16,630 million transistors and 2x 70.6 mm².

The Verdict

The benchmark data is unambiguous: the AMD Ryzen Threadripper PRO 9955WX wins every single recorded benchmark against the Intel Core 9 273PE. The average benchmark score for the AMD chip is 101041, placing it in the 97th percentile of all CPUs. The Intel chip averages 49845, placing it in the 90th percentile. The AMD chip sits among rivals like the AMD EPYC 7513 (102244, -1.2% delta), the AMD EPYC 8324P (103329, -2.2% delta), the AMD EPYC 4585PX (99324, 1.7% delta), and the AMD Ryzen Threadripper PRO 5965WX (98504, 2.6% delta). The Intel chip sits near the AMD Ryzen AI Max+ 388 (49796, 0.1% delta), the Intel Core i5-14600KF (49394, 0.9% delta), the Intel Core i9-13980HX (50398, -1.1% delta), and the AMD Ryzen AI 9 HX PRO 370 (50448, -1.2% delta).

The two processors occupy different performance classes entirely. The AMD chip delivers roughly double the average benchmark score of the Intel chip. The Intel part does have a higher boost clock of 5.70 GHz and a much lower TDP of 65 W, but those advantages do not translate into any benchmark victory. The AMD chip wins even in single-threaded workloads, which is typically where higher boost clocks matter most.

For users who need maximum throughput in rendering, compression, encryption, and math-heavy workloads, the data points decisively to the AMD Ryzen Threadripper PRO 9955WX. For users constrained by power limits or those who need integrated graphics, the Intel Core 9 273PE offers a functional alternative, but the recorded performance gap is substantial.

Where Each One Wins

The AMD Ryzen Threadripper PRO 9955WX wins in every benchmark category recorded. The largest margins appear in extended instructions (210% delta), data compression (126.9% delta), and random string sorting (121.3% delta). These workloads benefit from the AMD chip's larger core count, higher base clock, and greater memory bandwidth. The eight-channel memory subsystem with 409.6 GB/s bandwidth likely explains the compression and sorting advantages, as these tasks are often memory-bandwidth sensitive.

The AMD chip also dominates rendering workloads. Cinebench R23 multicore shows a 90.1% delta, and the pattern holds across R15, R20, and R23 versions. The 16-core, 32-thread configuration with 64 MB of L3 cache provides a clear advantage in multi-threaded rendering. Even single-core Cinebench tests show a 90.2% delta, indicating the Zen 5 architecture's per-core efficiency at 4.50 GHz base and 5.40 GHz boost.

The Intel Core 9 273PE does not win any recorded benchmark, but the closest margins indicate where it is least disadvantaged. PassMark single-thread shows only a 24.1% delta, and PassMark physics shows a 33.2% delta. These are the workloads where the Intel chip's 5.70 GHz boost clock narrows the gap. Floating point math at 44.8% delta is the next closest category. The Intel chip also has advantages outside raw performance: a 65 W TDP, integrated UHD Graphics 730, dual-channel DDR4 and DDR5 support, and a lower launch MSRP.

The data shows a clear division. The AMD Ryzen Threadripper PRO 9955WX is the performance leader in all measured categories, with the largest leads in specialized instruction and memory-heavy workloads. The Intel Core 9 273PE is the power-efficient option with integrated graphics and a higher boost clock, but it cannot match the AMD chip in any recorded benchmark. Users prioritizing raw compute, memory bandwidth, or PCIe lane count should follow the AMD path. Users prioritizing low power draw, integrated graphics, or a smaller platform footprint would look to the Intel part, accepting the substantial performance trade-off.