AMD Ryzen Threadripper PRO 5945WX vs Intel Xeon Platinum 8280 Comparison

Head-to-Head Benchmarks

The recorded Cinebench data presents a consistent picture: the Intel Xeon Platinum 8280 wins every head-to-head benchmark in this comparison, but by a narrow margin. Across all six tests, the Intel processor leads the AMD Ryzen Threadripper PRO 5945WX by a margin that never exceeds 3.5%. In Cinebench R15 multi-core, the Xeon scores 3564 against the Threadripper's 3447, a 3.4% advantage. The single-core R15 result follows the same pattern, with Intel at 503 and AMD at 486, a 3.5% lead.

Moving to Cinebench R20, the Xeon Platinum 8280 posts 14854 multi-core and 2097 single-core, while the Ryzen Threadripper PRO 5945WX records 14365 and 2027 respectively. The deltas remain identical to the R15 results: 3.4% for multi-core and 3.5% for single-core. The R23 suite repeats this trend, with Intel scoring 35367 multi-core and 4993 single-core, versus AMD's 34204 and 4828. The advantage is again 3.4% and 3.4%. The database records six wins for the Intel part and zero for the AMD part in this head-to-head set.

The consistency of these margins is noteworthy. A 3.4% to 3.5% gap across every generation of the Cinebench workload suggests a stable architectural difference rather than a workload-specific anomaly. The Xeon's wins are real but modest; no benchmark result indicates a blowout in either direction. The average benchmark score for the Xeon Platinum 8280 is 10230, placing it in the 66th percentile of all CPUs in the database. The Threadripper PRO 5945WX averages 9348, landing in the 65th percentile. The difference in average score is approximately 9.4%, which is larger than the Cinebench-specific deltas, though the two parts sit essentially on the same percentile tier.

When contextualized against their nearest rivals, both processors hold their ground. The Xeon Platinum 8280's nearest rival, the Intel Xeon Gold 6312U, scores 10291, which is 0.6% higher. The AMD EPYC 7F52 scores 10159, 0.7% lower than the Xeon. The Threadripper PRO 5945WX's nearest rival list includes the Intel Xeon Platinum 8180 at 9406, which is 0.6% higher, and the AMD Ryzen Threadripper 3960X at 9284, which is 0.7% lower. These are tight clusters, indicating that both CPUs are competitive within their respective performance tiers.

Architecture Differences

The architectural gulf between these two processors is substantial, even though the benchmark results are close. The Intel Xeon Platinum 8280 is built on Cascade Lake, specifically the Cascade Lake-SP generation, using Intel's 14 nm process node. It packs 28 cores and 56 threads, with a base clock of 2.70 GHz and a boost clock of 4.00 GHz. The thermal design power is 205 watts. The cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a shared 38.5 MB L3 cache. It uses DDR4 memory with ECC support and fits the Intel Socket 3647.

The AMD Ryzen Threadripper PRO 5945WX comes from the Zen 3 architecture, codenamed Chagall PRO, and is manufactured on TSMC's 7 nm process. It has 12 cores and 24 threads, half the core count of the Intel part. However, its clocks are significantly higher: 4.10 GHz base and 4.50 GHz boost. The TDP is 280 watts, which is 75 watts higher than the Xeon. The cache layout is different as well: 64 KB of L1 per core, 512 KB of L2 per core, and a 64 MB L3 cache. It also supports DDR4 with ECC, but the memory bus is eight-channel with a bandwidth of 204.8 GB/s. The Threadripper uses the AMD Socket WRX8 and offers PCIe Gen 4 with 128 lanes from the CPU.

The transistor counts reflect the manufacturing process differences. The Xeon integrates 8,000 million transistors on a single die, while the Threadripper uses 16,600 million transistors spread across four dies, each measuring 81 mm². The process node advantage favors AMD: 7 nm versus 14 nm, which typically allows for higher clock speeds and better power efficiency per core. This is visible in the clock speed disparity: the Threadripper's base clock is 52% higher than the Xeon's, and its boost clock is 12.5% higher.

The core count difference is the most significant architectural split. The Xeon has 28 cores versus the Threadripper's 12, a 133% advantage in core count. Yet the benchmark results show only a 3.4% to 3.5% delta in Intel's favor. This suggests that the Threadripper's higher clocks and more efficient Zen 3 cores are largely compensating for the core deficit in Cinebench, which is a workload that scales with core count but also responds to single-thread performance. The Threadripper also has a larger L3 cache at 64 MB versus 38.5 MB, which could reduce memory latency in certain workloads.

Both processors target the server and workstation segment, and both support ECC memory. The Threadripper's eight-channel memory interface and 204.8 GB/s bandwidth are specified in the database, while the Xeon's memory bandwidth is not recorded. The Xeon was released in December 2018, while the Threadripper PRO 5945WX arrived in March 2022, a gap of over three years in release timing.

Where Each One Wins

The Intel Xeon Platinum 8280 wins every recorded benchmark in the head-to-head comparison, but the margins are small enough that the practical implications depend on workload characteristics. The Xeon's advantage in multi-core Cinebench tests, which range from 3.4% to 3.4% across R15, R20, and R23, indicates that its higher core count does provide a measurable benefit in heavily threaded rendering tasks. For users running continuous multi-threaded workloads, the Xeon holds a consistent, if modest, edge.

The single-core results also favor the Xeon, with a 3.5% lead in R15, 3.5% in R20, and 3.4% in R23. This is more surprising given the Threadripper's higher boost clock of 4.50 GHz versus 4.00 GHz. The database does not provide per-core architecture details, but the Cinebench single-core scores suggest that the Cascade Lake core is competitive with Zen 3 in this specific workload, despite the clock disadvantage. The Xeon's single-core score of 503 in R15 and 4993 in R23 are both higher than the Threadripper's 486 and 4828.

The AMD Ryzen Threadripper PRO 5945WX, despite losing every head-to-head test, has advantages that are not captured in the Cinebench suite. Its eight-channel memory bus with 204.8 GB/s bandwidth is a significant asset for memory-bandwidth-sensitive applications, such as large-scale data processing or high-performance computing simulations. The PCIe Gen 4 support with 128 lanes provides more I/O throughput potential than the Xeon's unspecified PCIe configuration. The Threadripper also has a larger L3 cache at 64 MB, which can benefit workloads with large working sets that fit in cache.

In terms of power, the Xeon's 205 watt TDP is lower than the Threadripper's 280 watts, which could make the Intel part easier to cool in dense server environments. However, the Threadripper's higher TDP comes with higher clocks and a newer process node. The Xeon's 28 cores and 56 threads make it a stronger candidate for highly parallel workloads that scale beyond 12 cores, such as virtualization with many VMs or database servers with high concurrency.

For workloads that are limited by memory bandwidth or PCIe I/O, the Threadripper PRO 5945WX may outperform the Xeon despite the Cinebench results. The database does not include benchmarks for memory bandwidth or I/O throughput, so this remains an inference from the architecture data. The Threadripper's eight-channel memory support and 204.8 GB/s bandwidth are explicit specifications, while the Xeon's memory bus width is not recorded.

The Verdict

The data shows a clear winner in the Cinebench head-to-head: the Intel Xeon Platinum 8280 takes all six tests, but by a narrow 3.4% to 3.5% margin. For users selecting a processor purely on the basis of these recorded benchmarks, the Xeon is the better choice. Its 28 cores and 56 threads provide a multi-threading advantage that translates to consistent, if small, wins across all Cinebench versions. The Xeon also holds the edge in single-core performance, which is unexpected given the Threadripper's higher clock speeds.

However, the architectural differences suggest that the choice depends on the broader workload profile. The Threadripper PRO 5945WX offers a 64 MB L3 cache, eight-channel memory with 204.8 GB/s bandwidth, and PCIe Gen 4 with 128 lanes. These features are not reflected in the Cinebench scores but could be decisive for applications that are memory-bound or I/O-bound. The Threadripper's 12 cores and 24 threads are fewer, but its 4.50 GHz boost clock and Zen 3 architecture deliver competitive performance in single-threaded tasks, coming within 3.5% of the Xeon.

The Xeon Platinum 8280 is the safer pick for general multi-core workloads based on the recorded data. Its 66th percentile ranking versus the Threadripper's 65th percentile is a slight edge, and its average benchmark score of 10230 is about 9.4% higher. The nearest rival data shows the Xeon holding its own against the Xeon Gold 6312U and EPYC 7F52, while the Threadripper is similarly competitive against the Xeon Platinum 8180 and Threadripper 3960X.

For a server or workstation with heavy multi-threaded rendering, the Xeon's 28 cores give it a measurable advantage. For a system that prioritizes memory bandwidth, large cache capacity, or PCIe Gen 4 I/O, the Threadripper PRO 5945WX may be the better fit, even though it does not win any of the recorded Cinebench tests. The data does not support a claim that either processor is significantly faster overall; the margins are too small. The choice should be driven by the specific workload characteristics beyond what Cinebench measures.

FAQ

Q: Which processor wins the most head-to-head benchmarks in the database?

A: The Intel Xeon Platinum 8280 wins all six recorded head-to-head benchmarks against the AMD Ryzen Threadripper PRO 5945WX, with deltas ranging from 3.4% to 3.5%.

Q: What is the core count difference between the two processors?

A: The Intel Xeon Platinum 8280 has 28 cores and 56 threads, while the AMD Ryzen Threadripper PRO 5945WX has 12 cores and 24 threads.

Q: How do their clock speeds compare?

A: The Xeon has a base clock of 2.70 GHz and a boost clock of 4.00 GHz. The Threadripper has a base clock of 4.10 GHz and a boost clock of 4.50 GHz.

Q: What are the thermal design power ratings?

A: The Intel Xeon Platinum 8280 has a TDP of 205 watts, while the AMD Ryzen Threadripper PRO 5945WX has a TDP of 280 watts.

Q: Which processor has a larger L3 cache?

A: The AMD Ryzen Threadripper PRO 5945WX has a 64 MB L3 cache, while the Intel Xeon Platinum 8280 has a 38.5 MB shared L3 cache.

Q: What memory capabilities does the Threadripper offer that the Xeon does not?

A: The Threadripper has an eight-channel memory bus with a bandwidth of 204.8 GB/s. The Xeon's memory bus width and bandwidth are not recorded in the database. Both support DDR4 with ECC.