AMD EPYC 7272 vs Intel Core i9-9920X Comparison

The AMD EPYC 7272 and Intel Core i9-9920X are both 12-core, 24-thread processors, but they target entirely different market segments: one is a server/workstation part built for scalability, the other a desktop enthusiast chip. Despite their shared core count, benchmark results show the EPYC 7272 consistently edges out the i9-9920X across every Cinebench test, though the margins are remarkably slim. The data reveals a story of architectural divergence where process node advantages and platform features matter as much as raw compute scores.

Head-to-Head Benchmarks

The head-to-head results are unusually one-sided. The AMD EPYC 7272 wins all six Cinebench comparisons, but the victory margins are narrow, ranging from 1.6% to 1.7%. In Cinebench R15 multicore, the EPYC scores 2155 against Intel’s 2121, a 1.6% advantage. The single-core R15 test shows a similar pattern: 304 for AMD versus 299 for Intel, a 1.7% lead. This consistency continues in Cinebench R20, where the EPYC posts 8982 multicore and 1267 single-core, versus 8839 and 1247 for the i9-9920X — again 1.6% deltas. The latest Cinebench R23 results follow the same trend: 21386 multicore and 3019 single-core for AMD, compared to 21046 and 2971 for Intel, with the same 1.6% gap.

What stands out is that the EPYC 7272 wins despite having a significantly lower boost clock. The Intel part boosts to 4.50 GHz, while the EPYC tops out at 3.20 GHz — yet the AMD chip still leads in single-core performance. This indicates the Zen 2 architecture extracts more instructions per clock than Intel’s Skylake design. The multicore results are even more telling given the power disparity: the EPYC draws 120W TDP versus Intel’s 165W, yet still produces higher scores. The EPYC’s average benchmark score of 6186 places it 4.5% above the i9-9920X’s 5917 average. Both processors sit at the 61st percentile of all CPUs, showing they occupy the same performance tier overall, but the EPYC does so with lower power consumption and a more modern process node.

Architecture Differences

The architectural chasm between these two chips is substantial. The AMD EPYC 7272 uses the Zen 2 architecture on TSMC’s 7 nm process, codenamed Rome, with 7,600 million transistors across two 74 mm² dies. Intel’s i9-9920X relies on the older Skylake architecture on a 14 nm process from Intel’s own fabs, with a much larger 484 mm² die. The process node difference explains why AMD achieves competitive or better performance at a lower 120W TDP, while Intel requires 165W to reach similar results.

Cache configurations differ dramatically. The EPYC 7272 provides 64 KB of L1 and 512 KB of L2 per core, with 32 MB of L3 per die, totaling 64 MB of L3 cache. The i9-9920X has the same 64 KB L1 per core but doubles the L2 to 1 MB per core, while offering only 19.25 MB of shared L3. This means the AMD chip has over three times the total L3 capacity, though Intel’s larger per-core L2 may benefit certain workloads. The EPYC’s dual-die design with separate L3 pools is a server-oriented approach, while Intel’s single-die shared L3 is more traditional for desktop parts.

Platform support widens the gap further. The EPYC 7272 uses AMD Socket SP3 with eight-channel DDR4 memory, delivering 85.3 GB/s bandwidth, and supports ECC memory. It also features PCIe Gen 4 with 128 lanes (CPU only). The i9-9920X uses Intel Socket 2066 with quad-channel DDR4, also at 85.3 GB/s, but lacks ECC support and offers only PCIe Gen 3 with 44 lanes. Memory bandwidth is identical on paper, but the EPYC’s eight-channel implementation provides more headroom for server workloads that stress memory parallelism. The Intel chip has an unlocked multiplier, while the EPYC is locked, reflecting their different target audiences.

Where Each One Wins

The AMD EPYC 7272 wins every benchmark in this comparison, so the decision hinges on platform features and workload suitability. The EPYC is built for server and workstation environments: its eight-channel memory bus, ECC support, and 128 PCIe Gen 4 lanes make it ideal for virtualized environments, large databases, and compute-heavy scientific workloads where memory capacity and I/O expansion matter more than raw clock speed. Its lower TDP of 120W also makes it more attractive for dense server deployments where power and cooling are constrained.

The Intel Core i9-9920X targets desktop enthusiasts who want high core counts in a familiar Socket 2066 platform. Its unlocked multiplier allows overclocking, which can push performance beyond stock levels — something the EPYC cannot do. The higher 4.50 GHz boost clock gives it a theoretical advantage in lightly threaded applications, even though benchmark results show the EPYC winning single-core tests anyway. The i9-9920X also benefits from a mature desktop ecosystem with consumer motherboards, though its quad-channel memory and 44 PCIe lanes are more limited for workstation tasks.

For users who need maximum memory bandwidth per channel or require ECC for data integrity, the EPYC is the clear choice. For those who prioritize overclocking flexibility and a desktop-oriented platform, the i9-9920X offers that capability, albeit with higher power draw and an end-of-life production status. The EPYC remains in active production, which is a practical consideration for long-term system planning.

FAQ

Q: Which processor has the higher single-core performance?

A: The AMD EPYC 7272 wins all single-core Cinebench tests, including R15 (304 vs 299), R20 (1267 vs 1247), and R23 (3019 vs 2971), despite the Intel chip having a higher boost clock of 4.50 GHz versus 3.20 GHz.

Q: How do the multicore scores compare between the two?

A: The EPYC 7272 leads in every multicore test: Cinebench R15 scores 2155 against 2121, R20 scores 8982 against 8839, and R23 scores 21386 against 21046. The EPYC also has a higher average benchmark score of 6186 versus 5917.

Q: What are the power consumption differences?

A: The AMD EPYC 7272 has a TDP of 120W, while the Intel Core i9-9920X has a TDP of 165W. The EPYC achieves higher performance with 45W less power draw.

Q: Do these processors support ECC memory?

A: Yes, the AMD EPYC 7272 supports ECC memory with its eight-channel DDR4 controller. The Intel Core i9-9920X does not support ECC memory and uses a quad-channel DDR4 interface.

Q: Which platform offers more PCIe lanes?

A: The EPYC 7272 provides 128 PCIe Gen 4 lanes (CPU only), while the i9-9920X offers 44 PCIe Gen 3 lanes. This gives the EPYC significantly more expansion capability for server and workstation use.

Q: Are both processors still in production?

A: No. The AMD EPYC 7272 has an active production status, while the Intel Core i9-9920X is marked as end-of-life.

The Verdict

The data points to the AMD EPYC 7272 as the superior processor for most workloads. It wins every single benchmark in this comparison, from Cinebench R15 through R23, in both single-core and multicore tests. The margins are small — between 1.6% and 1.7% per test — but they are consistent, and the EPYC achieves them while drawing 45W less power. Its architectural advantages are clear: the 7 nm Zen 2 design delivers higher performance per clock than Intel’s 14 nm Skylake, despite the i9-9920X’s higher boost clock of 4.50 GHz versus 3.20 GHz.

For server and workstation buyers, the EPYC 7272 is the only rational choice. It offers ECC memory support, eight-channel DDR4, and 128 PCIe Gen 4 lanes, all of which are essential for enterprise workloads. Its active production status ensures long-term availability. The i9-9920X, with its quad-channel memory, no ECC support, and 44 PCIe Gen 3 lanes, simply cannot match the platform capabilities of the EPYC.

Desktop enthusiasts might prefer the i9-9920X for its unlocked multiplier, which allows overclocking beyond stock performance. The higher 4.50 GHz boost clock also makes it more appealing for applications that respond to raw clock speed, even though the benchmark data shows the EPYC winning single-core tests anyway. However, the i9-9920X’s end-of-life status and higher 165W TDP are significant drawbacks. The EPYC 7272 is the better-engineered product, and the benchmark results confirm that AMD’s architecture delivers more performance per watt and per clock. Unless overclocking is a hard requirement, the EPYC 7272 is the pick based on the data.