AMD EPYC 7251 vs Intel Core i5-11600T Comparison

The Verdict

The data presents an unusually clear hierarchy across every recorded benchmark: the AMD EPYC 7251 wins all six head-to-head Cinebench tests, with margins ranging from 2.2% to 2.5%. The Intel Core i5-11600T does not claim a single victory in the direct comparison. For workloads that rely primarily on multi-threaded throughput, the EPYC 7251 consistently posts higher scores: 1279 versus 1248 in Cinebench R15 multi-core, 5331 versus 5201 in R20 multi-core, and 12694 versus 12385 in R23 multi-core. Even in single-core tests, where the Core i5's 4.10 GHz boost clock might suggest an advantage, the EPYC 7251 edges ahead: 180 versus 176 in R15 single-core, 752 versus 734 in R20 single-core, and 1792 versus 1748 in R23 single-core.

The average benchmark score tells a slightly different story, however. The Core i5-11600T averages 3742 across its recorded tests, while the EPYC 7251 averages 3671. This discrepancy arises because the Core i5's benchmark suite includes Geekbench results (6653 multi-core, 1791 single-core), which the EPYC 7251 lacks in the database. The Core i5 also sits at the 56th percentile among all CPUs, identical to the EPYC 7251's 56th percentile. The nearest rivals for each processor reinforce their competitive positioning: the Core i5-11600T is within 0.9% of the Intel Core i5-1245U and within 0.6% of the Intel Core i5-11260H, while the EPYC 7251 is within 0.4% of the AMD EPYC 7301 and within 0.1% of the AMD Ryzen 7 PRO 1700X.

Who should pick which? For server or workstation deployments where sustained multi-core throughput matters most, the EPYC 7251 is the stronger choice based on its consistent Cinebench lead. For desktop users who want integrated graphics, a lower thermal envelope, and Geekbench results in the database, the Core i5-11600T offers a complete package: it includes UHD Graphics 750, runs at 35 W TDP, and supports DDR4 memory. The EPYC 7251 has no integrated graphics, a 120 W TDP, and requires a server platform. The Core i5-11600T also remains a capable option for single-threaded responsiveness, trailing by only 2.2% to 2.5% in single-core tests despite its much lower power target.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i5-11600T belongs to the Rocket Lake family, built on Intel's 14 nm process with a die size of 276 mm². It packs 6 cores and 12 threads, with a base clock of 1700 MHz and a boost clock of 4.10 GHz. Its thermal design power is 35 W, a remarkably low figure that reflects its desktop-oriented efficiency focus. The cache hierarchy consists of 80 KB of L1 per core, 512 KB of L2 per core, and 12 MB of shared L3 cache.

The AMD EPYC 7251, in contrast, is a Naples-generation Zen part manufactured by GlobalFoundries on a 14 nm process. It uses 4800 million transistors across a 213 mm² die, making it denser than the Intel chip despite the same process node. It offers 8 cores and 16 threads, with a base clock of 2.10 GHz and a boost clock of 2.90 GHz. The TDP is 120 W, which is substantially higher than the Core i5's 35 W figure, reflecting its server orientation. Its cache layout provides 96 KB of L1 per core, 512 KB of L2 per core, and 32 MB of shared L3 cache, giving it nearly three times the L3 capacity of the Core i5.

Memory architecture differs dramatically. The Core i5-11600T uses dual-channel DDR4 with 51.2 GB/s of memory bandwidth and no ECC support. The EPYC 7251 uses eight-channel DDR4 with 153.6 GB/s of memory bandwidth, exactly three times the bandwidth of the Intel part, and supports ECC memory. This makes the EPYC 7251 fundamentally better suited for memory-intensive server workloads, even though the Cinebench scores do not fully reflect that advantage.

Platform connectivity also diverges. The Core i5-11600T uses Intel Socket 1200 and provides PCIe Gen 4 with 20 lanes from the CPU. The EPYC 7251 uses AMD Socket SP3 and provides PCIe Gen 3, with no lane count specified in the database. The Core i5 includes integrated UHD Graphics 750, while the EPYC 7251 has no integrated graphics at all. The Core i5 is a desktop part with an unlocked multiplier? No, it is locked, while the EPYC 7251 has an unlocked multiplier. The Core i5 was released in March 2021 and is end-of-life, while the EPYC 7251 was released in June 2017 and remains active in production.

FAQ

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

A: The AMD EPYC 7251 wins all six recorded head-to-head Cinebench tests. It leads in R15 multi-core (1279 versus 1248), R15 single-core (180 versus 176), R20 multi-core (5331 versus 5201), R20 single-core (752 versus 734), R23 multi-core (12694 versus 12385), and R23 single-core (1792 versus 1748).

Q: How large is the performance gap between the two processors?

A: The EPYC 7251's advantage ranges from 2.2% to 2.5% across the six head-to-head benchmarks. The smallest margin is 2.2% in R15 single-core, while the largest is 2.5% in R23 single-core. Multi-core margins are consistently 2.4%.

Q: Which processor has more cores and threads?

A: The AMD EPYC 7251 has 8 cores and 16 threads, while the Intel Core i5-11600T has 6 cores and 12 threads. The EPYC therefore offers two additional cores and four additional threads.

Q: What are the memory bandwidth capabilities of each processor?

A: The EPYC 7251 supports eight-channel DDR4 with 153.6 GB/s of memory bandwidth and ECC memory. The Core i5-11600T supports dual-channel DDR4 with 51.2 GB/s of memory bandwidth and no ECC support. The EPYC provides three times the memory bandwidth.

Q: Does either processor include integrated graphics?

A: Only the Intel Core i5-11600T includes integrated graphics, specifically UHD Graphics 750. The AMD EPYC 7251 has no integrated graphics, which is typical for a server processor.

Q: What are the thermal design power ratings?

A: The Intel Core i5-11600T has a TDP of 35 W, while the AMD EPYC 7251 has a TDP of 120 W. The Core i5 draws significantly less power on paper, which aligns with its desktop efficiency focus.

Specification Differences

The recorded data shows distinct differences across nearly every specification category. The Core i5-11600T uses 6 cores and 12 threads, while the EPYC 7251 uses 8 cores and 16 threads. Base clocks differ: 1700 MHz for the Intel part versus 2.10 GHz for the AMD part. Boost clocks differ even more: 4.10 GHz for the Core i5 versus 2.90 GHz for the EPYC. TDP ratings are 35 W and 120 W respectively, a 85 W difference.

Cache configurations diverge in both per-core and shared capacities. The Core i5 provides 80 KB of L1 per core, while the EPYC provides 96 KB per core. Both share 512 KB of L2 per core. L3 cache is 12 MB shared on the Core i5 versus 32 MB shared on the EPYC, a 20 MB difference. The EPYC's larger L3 is consistent with its server role.

Memory channels and bandwidth differ substantially: dual-channel with 51.2 GB/s for the Core i5, eight-channel with 153.6 GB/s for the EPYC. ECC support is absent on the Core i5 and present on the EPYC. PCIe generations differ: Gen 4 with 20 lanes for the Intel part, Gen 3 for the AMD part. Integrated graphics exist only on the Core i5 (UHD Graphics 750). The sockets are incompatible: Intel Socket 1200 versus AMD Socket SP3.

Production status and release dates also differ. The Core i5-11600T was released in March 2021 and is end-of-life, while the EPYC 7251 was released in June 2017 and remains active. The Core i5 has a launch MSRP of $213, while the EPYC 7251 has no recorded launch MSRP. The multiplier is locked on the Core i5 and unlocked on the EPYC. The process node is 14 nm for both, but the foundries differ: Intel for the Core i5, GlobalFoundries for the EPYC. The die sizes are 276 mm² for the Intel part and 213 mm² for the AMD part, with the EPYC using 4800 million transistors.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a consistent, if modest, advantage for the AMD EPYC 7251 across all six Cinebench tests. No single test favors the Intel Core i5-11600T. The largest margin is in Cinebench R23 single-core, where the EPYC scores 1792 against the Core i5's 1748, a 2.5% difference. This is noteworthy because single-core performance typically favors higher boost clocks, and the Core i5's 4.10 GHz boost is significantly higher than the EPYC's 2.90 GHz. The data indicates the EPYC's Zen architecture extracts more work per clock in this test.

In multi-core workloads, the EPYC's advantage is uniform at 2.4% across R15, R20, and R23. The scores are: R15 multi-core 1279 versus 1248, R20 multi-core 5331 versus 5201, and R23 multi-core 12694 versus 12385. The absolute differences are 31 points in R15, 130 points in R20, and 309 points in R23. These margins are consistent despite the EPYC's 120 W TDP and the Core i5's 35 W TDP, which suggests the Core i5 achieves strong multi-threaded performance per watt even when trailing in absolute terms.

Single-core results follow a similar pattern. R15 single-core scores 180 for the EPYC versus 176 for the Core i5, a 2.2% difference. R20 single-core scores 752 versus 734, also 2.4%. The R23 single-core gap of 2.5% is the largest in the entire comparison. The EPYC's single-core advantage is surprising given its lower boost clock, but the data is unambiguous: the EPYC wins every single-core test.

The broader benchmark picture adds context. The Core i5-11600T has Geekbench results in the database: 6653 multi-core and 1791 single-core. The EPYC 7251 has no recorded Geekbench scores, so a direct comparison on that test is impossible. The average benchmark scores reflect this asymmetry: the Core i5 averages 3742, while the EPYC averages 3671. The Core i5's nearest rival, the Intel Xeon Silver 4116, scores 3733 with a delta of 0.2%, while the EPYC's nearest rival, the AMD Ryzen 7 PRO 1700X, scores 3673 with a delta of -0.1%. Both processors sit at the 56th percentile among all CPUs, indicating that despite their architectural differences, they occupy the same overall performance tier in the database.

For practical purposes, the EPYC 7251 is the better choice when multi-core Cinebench performance is the primary criterion, and it also wins single-core tests by a small margin. The Core i5-11600T remains competitive within 2.5% on every test while offering integrated graphics, lower power consumption, and Geekbench results that the EPYC cannot match in the recorded data. The choice between them depends on platform requirements: the EPYC demands a server socket and ECC memory support, while the Core i5 fits a desktop socket with integrated graphics and DDR4 memory.