AMD EPYC 7643P vs Intel Xeon 6730P Comparison

The AMD EPYC 7643P and Intel Xeon 6730P are both high-core-count server processors, but the benchmark data reveals they are optimized for very different workloads. The AMD EPYC 7643P wins 11 of the 17 head-to-head tests, while the Intel Xeon 6730P wins 6. The AMD part dominates in multi-threaded throughput and data-heavy tasks, while the Intel part takes the lead in single-threaded performance, extended instruction throughput, and floating-point physics calculations. The average benchmark score for the AMD EPYC 7643P is 144,824, placing it in the 98th percentile of all CPUs, while the Intel Xeon 6730P averages 124,756, sitting in the 97th percentile. These are both elite server parts, but the choice between them hinges on whether the workload favors massive parallel processing or raw per-core speed and specialized instruction sets.

Where Each One Wins

The AMD EPYC 7643P is the clear winner for heavily threaded, data-intensive workloads. In Cinebench multi-core tests, it consistently leads by 4.3% across R15, R20, and R23, with scores of 6623, 27598, and 65710 respectively, compared to the Intel's 6349, 26458, and 62996. The largest AMD victories come in PassMark integer math and random string sorting, where it leads by 34.4% and 40.7% respectively. The data encryption test shows a massive 70.8% advantage for the AMD part, with a score of 95606 versus 55964. Data compression also favors AMD by 16.5%, with scores of 1326051 versus 1138470. These results align with the AMD part's 48 cores and 96 threads versus the Intel's 32 cores and 64 threads, making it the go-to choice for database operations, virtualization, and any workload that scales with core count.

The Intel Xeon 6730P wins where single-thread speed and specialized instruction execution matter. Its PassMark single-thread score is 2995 versus 2655 for AMD, a 11.4% advantage. In extended instructions, the Intel part leads decisively with 96204 versus 67398, a 29.9% margin, indicating superior SIMD and vector processing capabilities. It also wins in physics calculations (8606 versus 8002, a 7% lead) and floating-point math (226838 versus 216592, a 4.5% lead). Prime number finding is marginally better on Intel (686 versus 651, a 5.1% lead). These wins suggest the Intel Xeon 6730P is better suited for scientific simulation, financial modeling, and workloads that leverage AVX-512 or similar advanced instruction sets.

The Verdict

For server administrators prioritizing multi-threaded throughput, the AMD EPYC 7643P is the stronger choice. Its 48-core configuration delivers consistently higher Cinebench multi-core scores and dominates in integer math, string sorting, and encryption, making it the better fit for high-density virtualization, big data analytics, and database servers. The 70.8% encryption advantage is particularly compelling for security-focused workloads. The data shows the AMD part also has a higher average benchmark score (144,824 versus 124,756), and it sits in a higher performance percentile (98th versus 97th).

For workloads that depend on single-thread performance or advanced instruction throughput, the Intel Xeon 6730P is the better pick. Its 11.4% lead in single-threaded PassMark and 29.9% lead in extended instructions make it the superior option for real-time analytics, high-frequency trading, and scientific computing that relies on vectorized code. The Intel part also wins in physics and floating-point math, which are critical for engineering simulation. Its lower core count (32 versus 48) is offset by higher base and boost clocks (2.50 GHz and 3.80 GHz versus 2.30 GHz and 3.60 GHz), allowing it to excel where per-core performance is the bottleneck.

Head-to-Head Benchmarks

The Cinebench suite shows a consistent pattern: the AMD EPYC 7643P wins every single test by exactly 4.3%. In R15 multi-core, AMD scores 6623 against Intel's 6349; in R15 single-core, 934 versus 896. The R20 results are 27598 versus 26458 for multi-core and 3895 versus 3735 for single-core. The R23 tests show 65710 versus 62996 for multi-core and 9276 versus 8893 for single-core. This uniformity suggests the AMD architecture provides a steady advantage across both single and multi-threaded rendering tasks.

The PassMark suite reveals a more polarized picture. The AMD EPYC 7643P wins five tests, with its largest margin being data encryption at 70.8% (95606 versus 55964). Integer math shows a 34.4% lead (390775 versus 290740), and random string sorting shows a 40.7% lead (160274 versus 113919). Data compression also favors AMD at 16.5% (1326051 versus 1138470), and the multithread test shows a 4.3% lead (77307 versus 74113).

The Intel Xeon 6730P wins six tests, with its biggest victory being extended instructions at 29.9% (96204 versus 67398). Single-thread performance shows an 11.4% lead (2995 versus 2655). Physics calculations favor Intel by 7% (8606 versus 8002), and floating-point math by 4.5% (226838 versus 216592). Prime number finding is a narrow 5.1% win for Intel (686 versus 651).

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7643P has 48 cores and 96 threads, while the Intel Xeon 6730P has 32 cores and 64 threads.

Q: Which processor has a higher boost clock speed?

A: The Intel Xeon 6730P has a higher boost clock at 3.80 GHz, compared to the AMD EPYC 7643P's 3.60 GHz.

Q: Which processor is better for data encryption workloads?

A: The AMD EPYC 7643P is significantly better, scoring 95606 in PassMark data encryption compared to 55964 for the Intel Xeon 6730P, a 70.8% advantage.

Q: Which processor wins in single-threaded performance?

A: The Intel Xeon 6730P wins in PassMark single-thread with a score of 2995, versus 2655 for the AMD EPYC 7643P, an 11.4% lead.

Q: Which processor supports faster memory bandwidth?

A: The Intel Xeon 6730P supports DDR5 with a memory bandwidth of 409.6 GB/s, while the AMD EPYC 7643P supports DDR4 with 204.8 GB/s.

Q: How does the average benchmark score compare?

A: The AMD EPYC 7643P has an average benchmark score of 144,824, while the Intel Xeon 6730P averages 124,756, making the AMD part approximately 16% higher on average.

Architecture Differences

The AMD EPYC 7643P uses the Zen 3 architecture, codenamed Milan, built on a 7 nm process at TSMC. It features 8 separate die, each measuring 81 mm², with a total of 33,200 million transistors. The Intel Xeon 6730P uses the Granite Rapids architecture, built on a 5 nm process at Intel, with 2 die measuring 598 mm² each. The transistor count for the Intel part is not recorded in the database.

Cache configurations differ significantly. The AMD part offers 64 KB of L1 cache per core, 512 KB of L2 per core, and a shared 256 MB of L3 cache. The Intel part offers 112 KB of L1 per core, 2 MB of L2 per core, and a larger 288 MB of shared L3 cache. The larger per-core caches on Intel support its single-thread performance advantage, while AMD's massive shared L3 helps with multi-threaded data sharing.

Memory architecture also diverges. The AMD EPYC 7643P supports DDR4 memory with an eight-channel bus and 204.8 GB/s bandwidth. The Intel Xeon 6730P supports DDR5 with an eight-channel bus and doubles the bandwidth to 409.6 GB/s. PCIe connectivity differs as well: AMD provides Gen 4 with 128 lanes (CPU only), while Intel provides Gen 5 with 88 lanes (CPU only). The Intel part also lists integrated graphics as "N/A", while the AMD part has no integrated graphics recorded.

Specification Differences

The AMD EPYC 7643P has a base clock of 2.30 GHz and a boost clock of 3.60 GHz, while the Intel Xeon 6730P runs at 2.50 GHz base and 3.80 GHz boost. The thermal design power (TDP) differs, with AMD rated at 225 watts and Intel at 250 watts. The AMD part uses AMD Socket SP3, while the Intel part uses Intel Socket 4710.

The AMD EPYC 7643P was released on September 4, 2023, with a launch MSRP of $2722. The Intel Xeon 6730P was released on February 23, 2025, with a launch MSRP of $3726. The AMD part's part number is 100-000001285, while the Intel part's part number is SRV5R. Neither processor has an unlocked multiplier. Both target the server/workstation market segment and are currently in active production.