AMD EPYC 7262 vs Intel Core i9-9900X Comparison

Head-to-Head Benchmarks

The recorded data shows a clear pattern across every Cinebench iteration: the Intel Core i9-9900X wins all six head-to-head comparisons, though the margins are consistently narrow. In Cinebench R15 multicore, the Intel part scores 1851 against the EPYC 7262's 1780, a 4% advantage. The single-core R15 result follows the same shape: 261 versus 251, again a 4% gap. Moving to Cinebench R20, the multicore score lands at 7713 for Intel and 7418 for AMD, a 4% lead, while single-core shows 1088 against 1047, a 3.9% margin. The R23 tests repeat the pattern: multicore 18365 versus 17662 (4% delta) and single-core 2592 versus 2493 (4% delta). There are no reversals. The Intel Core i9-9900X claims six wins out of six possible head-to-head benchmarks.

The average benchmark score in the database reinforces this positioning. The Intel chip averages 5301 across all recorded tests, while the AMD EPYC 7262 averages 5109. That places the Intel part roughly 3.8% higher on average, which aligns with the consistent 4% deltas seen in the Cinebench family. Both CPUs sit at the 60th percentile among all processors in the database, meaning they occupy the same overall performance tier despite the Intel chip's repeated per-test victories.

It is worth remembering these margins are small in absolute terms. A 4% difference in Cinebench scores is not a generational leap; it is a close contest where the Intel processor maintains a steady, if modest, edge across every workload tested. The single-core results are particularly telling: Intel leads by 10 points in R15 (261 versus 251), 41 points in R20 (1088 versus 1047), and 99 points in R23 (2592 versus 2493). Each of those translates to the same 4% delta, indicating the per-core performance advantage is consistent regardless of the benchmark version.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i9-9900X uses a Skylake-X architecture built on Intel's 14 nm process node, with a die produced by Intel's own foundry. It packs 10 cores and 20 threads, running at a base clock of 3.50 GHz and a boost clock of 4.50 GHz. The thermal design power is 165 watts. Cache is distributed as 64 KB of L1 per core, 1 MB of L2 per core, and 19.25 MB of shared L3 cache. Memory support is DDR4 over a quad-channel bus, yielding a theoretical memory bandwidth of 85.3 GB/s. The chip does not support ECC memory. PCIe connectivity is Gen 3 with 44 lanes from the CPU. The socket is Intel Socket 2066, and the multiplier is unlocked for overclocking.

The AMD EPYC 7262 belongs to the EPYC 7002 series, built on the Zen 2 architecture (codename Rome) using a 7 nm process node from TSMC. It has 8 cores and 16 threads, with a base clock of 3.20 GHz and a boost clock of 3.40 GHz. The TDP is 155 watts, slightly lower than Intel's 165 watts. The transistor count is recorded at 15,200 million, spread across a die size of 4x 74 mm². Cache differs notably: 64 KB L1 per core, 512 KB L2 per core, and 32 MB of L3 per die, totaling 128 MB of L3 across all dies. That is more than six times the Intel chip's 19.25 MB L3 allocation. Memory support is DDR4 over an eight-channel bus, delivering a theoretical bandwidth of 204.8 GB/s, which is roughly 2.4 times the Intel figure. The EPYC supports ECC memory, a feature absent on the Intel part. PCIe is Gen 4 with 128 lanes from the CPU, nearly three times the lane count and a newer generation. The socket is AMD Socket SP3, and the multiplier is locked.

The process node difference is significant: 14 nm for Intel versus 7 nm for AMD. The EPYC also uses a chiplet design with four dies, each carrying 32 MB of L3, whereas the Intel chip is a monolithic Skylake-X die with a single shared L3 pool. The EPYC's eight-channel memory controller is a server-class feature, and its 128 PCIe Gen 4 lanes reflect a platform designed for high-bandwidth I/O. The Intel part counters with higher clock speeds (4.50 GHz boost versus 3.40 GHz) and two additional cores, which explains its lead in multi-threaded Cinebench tests despite the architectural differences.

The Verdict

The data points to a straightforward conclusion: the Intel Core i9-9900X is the better performer in every benchmark recorded in this comparison. It wins all six head-to-head tests, with margins between 3.9% and 4%. The average benchmark score confirms this, with Intel at 5301 versus AMD at 5109. For anyone prioritizing raw Cinebench performance, the Intel chip is the clear choice.

However, the AMD EPYC 7262 is not a failed product; it simply targets a different objective. Its strengths lie in platform capabilities rather than benchmark scores. The EPYC offers ECC memory support, eight-channel DDR4 memory with 204.8 GB/s bandwidth, and 128 PCIe Gen 4 lanes. Those features matter in server and workstation environments where memory integrity, I/O expansion, and connectivity are critical. The Intel chip offers none of those: no ECC, quad-channel memory at 85.3 GB/s, and 44 PCIe Gen 3 lanes.

The production status also differs. Intel lists the Core i9-9900X as end-of-life, while AMD lists the EPYC 7262 as active. The release dates are close (October 2018 for Intel, August 2019 for AMD), but the Intel part is no longer in production. The EPYC also carries a lower launch MSRP of $575, compared to Intel's $989, though price comparisons are not part of this analysis.

Given the recorded data, the Intel Core i9-9900X is the pick for workloads that mirror Cinebench's rendering and multi-threaded tasks, where its 4% edge consistently holds. The AMD EPYC 7262 is the pick for server deployments that require ECC memory, massive memory bandwidth, and high lane-count PCIe Gen 4 connectivity, accepting a small performance deficit in compute benchmarks.

FAQ

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

A: The Intel Core i9-9900X wins all six head-to-head benchmarks recorded, with deltas of 4% in Cinebench R15 multicore and single-core, 4% in R20 multicore, 3.9% in R20 single-core, and 4% in R23 multicore and single-core.

Q: What is the average benchmark score difference between the two?

A: The Intel Core i9-9900X averages 5301, while the AMD EPYC 7262 averages 5109. That is a difference of 192 points, or roughly 3.8% in Intel's favor.

Q: Does the AMD EPYC 7262 support ECC memory?

A: Yes, the AMD EPYC 7262 supports ECC memory. The Intel Core i9-9900X does not support ECC memory.

Q: How do the memory bandwidth figures compare?

A: The AMD EPYC 7262 has a theoretical memory bandwidth of 204.8 GB/s over an eight-channel bus. The Intel Core i9-9900X has 85.3 GB/s over a quad-channel bus.

Q: What are the core and thread counts?

A: The Intel Core i9-9900X has 10 cores and 20 threads. The AMD EPYC 7262 has 8 cores and 16 threads.

Q: Which processor has a higher boost clock?

A: The Intel Core i9-9900X boosts to 4.50 GHz, while the AMD EPYC 7262 boosts to 3.40 GHz.

Where Each One Wins

The Intel Core i9-9900X wins in every compute benchmark recorded. Its 4% lead across Cinebench R15, R20, and R23, in both single-core and multicore tests, makes it the superior choice for rendering workloads, 3D modeling, video encoding, and any task that scales with CPU compute throughput. The two extra cores (10 versus 8) and the higher boost clock (4.50 GHz versus 3.40 GHz) are the likely drivers of this advantage. The Intel chip also wins on overclocking flexibility, as its multiplier is unlocked, whereas the EPYC's multiplier is locked.

The AMD EPYC 7262 wins in platform-level capabilities. It provides ECC memory support, which is essential for error-sensitive server workloads. Its eight-channel memory bus delivers 204.8 GB/s of bandwidth, more than double the Intel chip's 85.3 GB/s, making it the better option for memory-bound applications such as large in-memory databases or high-performance virtualization. The 128 PCIe Gen 4 lanes dwarf Intel's 44 Gen 3 lanes, enabling far more expansion cards, NVMe storage devices, or GPU accelerators. The EPYC also uses a 7 nm process with 15,200 million transistors, indicating a more modern fabrication technology, and it remains an active production part while the Intel chip is end-of-life.

For a workstation user running Cinebench-class workloads and wanting maximum single-thread responsiveness, the Intel Core i9-9900X is the winner. For a server administrator building a system that demands ECC memory, vast I/O expansion, and high memory bandwidth, the AMD EPYC 7262 is the winner, despite its lower compute scores.

Specification Differences

The two processors differ on nearly every recorded specification. The Intel Core i9-9900X has 10 cores and 20 threads, while the AMD EPYC 7262 has 8 cores and 16 threads. Base clocks are 3.50 GHz for Intel and 3.20 GHz for AMD; boost clocks are 4.50 GHz and 3.40 GHz, respectively. TDP is 165 watts for Intel and 155 watts for AMD. The socket differs: Intel Socket 2066 versus AMD Socket SP3. Architecture is Skylake (Skylake-X) for Intel and Zen 2 (Rome) for AMD. Process nodes are 14 nm (Intel foundry) and 7 nm (TSMC). Transistor count is not recorded for Intel but is 15,200 million for AMD. Die size is not recorded for Intel but is 4x 74 mm² for AMD.

Cache configurations diverge sharply. L1 is 64 KB per core for both, but L2 is 1 MB per core for Intel versus 512 KB per core for AMD. L3 is 19.25 MB shared for Intel versus 32 MB per die (128 MB total) for AMD. Memory support is DDR4 for both, but the bus is quad-channel for Intel and eight-channel for AMD. Memory bandwidth is 85.3 GB/s for Intel and 204.8 GB/s for AMD. ECC memory is false for Intel and true for AMD. PCIe is Gen 3 with 44 lanes for Intel and Gen 4 with 128 lanes for AMD. The market segment is Desktop for Intel and Server/Workstation for AMD. Production status is End-of-life for Intel and Active for AMD. Release dates are 2018-10-18 for Intel and 2019-08-06 for AMD. Launch MSRP is $989 for Intel and $575 for AMD. The multiplier is unlocked for Intel and locked for AMD. Part numbers are SREZ7 for Intel and 100-000000041 for AMD. The Intel chip has no recorded series, while AMD lists the EPYC 7002 series. The generation field lists Intel as "Core i9 (X-Series 9th Gen)" and AMD as "EPYC (Zen 2 (Rome))".