AMD EPYC 7763 vs Intel Xeon w9-3595X Comparison

The Intel Xeon w9-3595X and AMD EPYC 7763 represent two distinct philosophies for high-core-count server and workstation computing. The Intel part, a 60-core Sapphire Rapids design, wins the majority of benchmark comparisons with a 12-4 victory in head-to-head tests, while the AMD EPYC 7763, a 64-core Milan chip, counters with decisive wins in encryption, prime number finding, integer math, and physics simulations. The data shows that the Intel processor dominates in most rendering, compression, and single-threaded workloads, but the AMD chip carves out a clear niche in specific computational tasks where its architecture excels.

Where Each One Wins

The Intel Xeon w9-3595X takes the crown in the vast majority of workloads that stress raw throughput and floating-point performance. Across all three Cinebench versions (R15, R20, R23), it delivers a consistent 17.2% advantage over the EPYC 7763 in both multi-core and single-core tests. This makes it the clear pick for 3D rendering, video encoding, and any application that scales with Cinebench-style performance. In PassMark's floating-point math test, the Intel chip is 31.6% ahead, and in extended instructions (SIMD-heavy workloads) it leads by a massive 45.3%. Data compression also favors Intel, with a 12.5% edge, and the multithreaded PassMark score is 17.7% higher.

The AMD EPYC 7763, while losing the overall benchmark war, wins where it matters for specific server tasks. Its most significant victory is in PassMark data encryption, where it beats the Intel chip by 23.8%. It also excels in integer math, scoring 8.4% higher, and in prime number finding, where it is 13.2% ahead. The largest AMD win comes in PassMark physics, where it is 24.2% faster. These results indicate the EPYC 7763 is better suited for cryptography, integer-heavy database workloads, and physics simulations, whereas the Intel chip is the superior choice for floating-point-heavy creative and scientific workloads.

Architecture Differences

The two processors are built on fundamentally different manufacturing and design approaches. The Intel Xeon w9-3595X uses a 10 nm process fabricated by Intel, while the AMD EPYC 7763 uses a smaller 7 nm process from TSMC. This node difference is reflected in the AMD chip's transistor count of 33,200 million, a figure not provided for Intel, and its die configuration of 8x 81 mm² chiplets compared to Intel's monolithic 4x 477 mm² design.

Core counts differ slightly: the Intel chip has 60 cores and 120 threads, while the AMD chip has 64 cores and 128 threads. However, the Intel part compensates with a much higher boost clock of 4.80 GHz versus 3.50 GHz, though its base clock is lower at 2.00 GHz compared to 2.45 GHz. The cache hierarchy is also distinct. Intel provides 80 KB of L1 per core, 2 MB of L2 per core, and 112.5 MB of L3 cache. AMD offers 64 KB of L1, 512 KB of L2, and a much larger 256 MB of shared L3. This larger AMD L3 cache likely contributes to its wins in integer and encryption tasks, while Intel's higher clocks and per-core L2 benefit its Cinebench and floating-point performance.

Memory and I/O further differentiate the pair. The Intel Xeon w9-3595X supports DDR5 memory with an eight-channel bus and 307.2 GB/s of bandwidth, while the EPYC 7763 uses DDR4, also with an eight-channel bus, but limited to 204.8 GB/s. Intel provides PCIe Gen 5 with 112 lanes (CPU only), whereas AMD offers PCIe Gen 4 with 128 lanes (CPU only). Both support ECC memory. The Intel part has an unlocked multiplier, while the AMD chip is locked. The Intel processor draws 385 W TDP, compared to 280 W for the AMD part. Intel uses Socket 4677, AMD uses Socket SP3. The Intel chip's codename is Sapphire Rapids, released in 2024, while the AMD part is Milan, from 2021.

Head-to-Head Benchmarks

The Cinebench results show a uniform pattern: the Intel Xeon w9-3595X is exactly 17.2% faster than the EPYC 7763 in every iteration of this benchmark, from R15 to R23, covering both multi-core and single-core. In Cinebench R23 multi-core, Intel scores 84304 versus AMD's 71902, a gap that will be immediately visible in long rendering jobs. The single-core R23 score is not listed for the Intel chip, but the R15 single-core score of 1199 versus 1023 shows the same 17.2% edge.

PassMark results paint a more varied picture. The Intel chip's biggest win is in single-thread performance, where it scores 3720 to AMD's 2518, a 47.7% advantage. This is the single largest delta in the entire benchmark suite, suggesting Intel's architecture is far more efficient per clock in light-thread workloads. Extended instructions show a 45.3% Intel lead (142785 vs 98294), and floating-point math is 31.6% in Intel's favor (379008 vs 287919). Data compression sees Intel ahead by 12.5% (1831962 vs 1628973), and multithread performance is 17.7% better (99576 vs 84591). Random string sorting is close, with Intel winning by just 4.4% (190745 vs 182676).

AMD's wins are equally clear-cut. Data encryption shows the EPYC 7763 at 121001 versus Intel's 92249, a 23.8% margin. Physics is the other major AMD victory, scoring 7708 versus 5842, a 24.2% edge. Integer math favors AMD by 8.4% (516920 vs 473507), and prime number finding sees AMD ahead by 13.2% (668 vs 580). These deltas indicate that AMD's Zen 3 cores are particularly strong at integer and cryptographic operations, while Intel's Sapphire Rapids cores excel at floating-point and single-threaded tasks.

FAQ

Q: Which processor is faster in Cinebench multi-core tests?

A: The Intel Xeon w9-3595X wins all Cinebench multi-core tests by exactly 17.2%. In Cinebench R23 multi-core, it scores 84304 versus the AMD EPYC 7763's 71902.

Q: Does the AMD EPYC 7763 win any benchmark by a large margin?

A: Yes, the EPYC 7763 wins PassMark physics by 24.2% (7708 vs 5842) and data encryption by 23.8% (121001 vs 92249). These are its two largest victories over the Intel chip.

Q: What is the single biggest performance gap between these two CPUs?

A: The largest delta is in PassMark single-thread performance, where the Intel Xeon w9-3595X is 47.7% faster, scoring 3720 versus AMD's 2518.

Q: How do their memory bandwidth specifications compare?

A: The Intel chip supports DDR5 with 307.2 GB/s of bandwidth, while the AMD chip uses DDR4 with 204.8 GB/s. Both use an eight-channel memory bus and support ECC memory.

Q: Which CPU has more cores and threads?

A: The AMD EPYC 7763 has 64 cores and 128 threads, while the Intel Xeon w9-3595X has 60 cores and 120 threads. Despite fewer cores, the Intel chip wins most multi-threaded benchmarks.

Q: What are the TDP ratings for each processor?

A: The Intel Xeon w9-3595X has a 385 W TDP, while the AMD EPYC 7763 has a 280 W TDP. The Intel part also has a higher boost clock (4.80 GHz vs 3.50 GHz).

Specification Differences

The two CPUs differ in every major specification category. The Intel Xeon w9-3595X has 60 cores and 120 threads, while the AMD EPYC 7763 has 64 cores and 128 threads. Intel's base clock is 2.00 GHz versus AMD's 2.45 GHz, but Intel's boost clock is 4.80 GHz versus AMD's 3.50 GHz. TDP is 385 W for Intel and 280 W for AMD. The Intel chip uses Socket 4677, while AMD uses Socket SP3.

Process technology separates them: Intel uses a 10 nm node from its own foundry, while AMD uses TSMC's 7 nm node. The AMD chip contains 33,200 million transistors, a figure not disclosed for Intel. Intel's die size is 4x 477 mm², while AMD's is 8x 81 mm². Cache structures differ significantly: Intel has 80 KB L1 per core, 2 MB L2 per core, and 112.5 MB L3, while AMD has 64 KB L1, 512 KB L2, and 256 MB shared L3.

Memory support is DDR5 for Intel, DDR4 for AMD, with bandwidth of 307.2 GB/s versus 204.8 GB/s. PCIe is Gen 5 with 112 lanes on Intel, Gen 4 with 128 lanes on AMD. The Intel chip has an unlocked multiplier, the AMD chip is locked. Intel's release date is 2024, AMD's is 2021. The Intel part number is SRN71, while AMD's is 100-000000312100-000000312WOF. The Intel chip lacks integrated graphics, and AMD's integrated graphics status is not specified.

The Verdict

The Intel Xeon w9-3595X is the superior processor for the majority of workloads, winning 12 of 16 head-to-head benchmarks. Its consistent 17.2% advantage across all Cinebench tests makes it the obvious choice for rendering and creative applications. The 47.7% single-thread lead and 45.3% extended instructions advantage further cement its position for engineering workstations and scientific computing where per-core performance matters. The higher memory bandwidth (307.2 GB/s vs 204.8 GB/s) and newer DDR5 support provide additional headroom for memory-intensive tasks.

The AMD EPYC 7763 should be chosen only for workloads that specifically match its strengths. The 23.8% encryption win and 24.2% physics advantage make it a strong candidate for cryptographic servers and physics simulation clusters. Its 8.4% integer math lead and 13.2% prime number advantage suggest it may handle certain database or integer-heavy workloads more efficiently. However, these wins are fewer and more niche than Intel's broad spectrum of victories.

The data shows a clear overall winner: the Intel Xeon w9-3595X delivers higher performance in nearly every general-purpose benchmark, with only four specific exceptions. For a user building a workstation for mixed use, the Intel chip's combination of higher clocks, DDR5, and PCIe Gen 5 makes it the more future-proof and versatile choice. The AMD EPYC 7763 remains relevant only for specialized tasks where its integer and encryption strengths are paramount, but its older DDR4 platform and lower bandwidth put it at a structural disadvantage. The Intel chip also comes with a lower launch MSRP of $5889 versus AMD's $7890, though both are premium server parts. Choose Intel for balanced power, AMD for specific cryptographic or physics-heavy workloads.