AMD EPYC 75F3 vs Intel Core i5-1235U Comparison

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 75F3 has 32 cores and 64 threads, while the Intel Core i5-1235U has 10 cores and 12 threads.

Q: What are the single-core benchmark scores for each CPU?

A: In Cinebench R23 single-core, the AMD EPYC 75F3 scores 7740, while the Intel Core i5-1235U scores 1379. The EPYC leads by 461.3% in this test.

Q: Which processor supports ECC memory?

A: The AMD EPYC 75F3 supports ECC memory, while the Intel Core i5-1235U does not.

Q: What is the memory channel configuration for each?

A: The AMD EPYC 75F3 uses an eight-channel memory bus with DDR4 support, while the Intel Core i5-1235U uses a dual-channel bus supporting both DDR4 and DDR5.

Q: Does the Intel Core i5-1235U have integrated graphics?

A: Yes, the Intel Core i5-1235U includes Iris Xe 80EU integrated graphics. The AMD EPYC 75F3 has no integrated graphics listed in the database.

Q: What is the percentile ranking for both processors?

A: Both the AMD EPYC 75F3 and the Intel Core i5-1235U rank in the 70th percentile among all CPUs tracked in the database.

Architecture Differences

The AMD EPYC 75F3 and Intel Core i5-1235U represent fundamentally different design philosophies. The EPYC 75F3 is built on AMD's Zen 3 architecture, codenamed Milan, using a 7 nm process from TSMC. It packs 33,200 million transistors across a die size of 8x 81 mm². The Intel part uses Alder Lake architecture, specifically the Alder Lake-U variant, fabricated on Intel's 10 nm process.

The core counts diverge sharply. The EPYC 75F3 offers 32 cores and 64 threads, making it a high-core-count server part. The Core i5-1235U delivers 10 cores and 12 threads, a hybrid design typical of mobile processors. This difference in core topology drives nearly every benchmark comparison between the two.

Cache hierarchies also differ substantially. The EPYC 75F3 has 64 KB of L1 cache per core, 512 KB of L2 per core, and a massive 256 MB shared L3 cache. The Core i5-1235U has 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3. The EPYC's 256 MB L3 cache is particularly suited for server workloads with large working sets, while the Intel part's smaller cache reflects its mobile efficiency focus.

Process node and foundry differences matter. The EPYC 75F3 uses TSMC's 7 nm process, while Intel fabricates the Core i5-1235U on its own 10 nm node. The EPYC also has a much higher transistor count, though the Intel part's transistor count is not recorded in the database.

Memory support is another clear differentiator. The EPYC 75F3 supports DDR4 across eight channels, delivering 204.8 GB/s of memory bandwidth. The Core i5-1235U supports both DDR4 and DDR5 across dual channels, though the database does not record a bandwidth figure for it. ECC memory is supported on the EPYC but not on the Intel part.

PCIe lane counts also separate the two. The EPYC 75F3 provides 128 PCIe Gen 4 lanes, while the Core i5-1235U provides 20 PCIe Gen 4 lanes. The EPYC targets server/workstation platforms with extensive I/O requirements, whereas the Intel part is designed for thin-and-light mobile systems.

Socket and market segment reinforce their different roles. The EPYC 75F3 uses AMD Socket SP3 and is classified as a Server/Workstation part. The Core i5-1235U uses Intel BGA 1744 and is classified as a Mobile part. The EPYC's base clock is 2.95 GHz with a 4.00 GHz boost, while the Intel part has a 1300.00 MHz base clock and a 4.40 GHz boost.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a complete sweep for the AMD EPYC 75F3, winning all six recorded comparisons. The margins are enormous, consistently around 461% in the EPYC's favor.

In Cinebench R15 multicore, the EPYC 75F3 scores 5526 against the Core i5-1235U's 985, a 461% advantage. Single-core R15 shows a similar pattern: 780 versus 138, a 465.2% lead. These numbers indicate that the EPYC's advantage is not merely about core count; its per-core performance also outclasses the Intel mobile part.

Cinebench R20 results reinforce this trend. The EPYC 75F3 posts 23028 in multicore versus 4105 for the Core i5-1235U, again a 461% delta. Single-core R20 shows 3250 versus 579, a 461.3% difference. The consistency of the delta percentages across R15 and R20 suggests a stable performance relationship between the two processors.

Cinebench R23, the most recent rendering benchmark in the set, shows the same story. The EPYC 75F3 scores 54829 in multicore, while the Core i5-1235U scores 9774, a 461% lead. Single-core R23 has the EPYC at 7740 and the Intel part at 1379, a 461.3% margin.

The benchmark data indicates that the EPYC 75F3 is not just ahead in multi-threaded workloads, where its 32 cores would naturally dominate, but also in single-threaded tests. The Intel Core i5-1235U has a higher boost clock at 4.40 GHz versus 4.00 GHz, yet the EPYC still wins single-core comparisons by over four and a half times. This points to significant differences in instruction efficiency and memory subsystem design between the two architectures.

The Intel part does have additional benchmark entries in the database beyond the head-to-head set, including Geekbench and PassMark results. Its Geekbench multicore score is 5308 and single-core is 1609. PassMark results include data compression at 147450, encryption at 9347, extended instructions at 8176, prime numbers at 954, floating point math at 43303, integer math at 48553, multithread at 12923, physics at 686, random string sorting at 17050, and single thread at 3151. These figures are not directly compared in the head-to-head set, but they provide context for the Intel part's standalone capabilities.

Specification Differences

The specification table reveals stark contrasts across nearly every field. Core count is the most obvious: 32 cores for the AMD EPYC 75F3 versus 10 cores for the Intel Core i5-1235U. Thread count follows proportionally: 64 threads versus 12.

Base clocks differ in an unusual direction. The EPYC 75F3 has a base clock of 2.95 GHz, while the Core i5-1235U has a base clock of 1300.00 MHz. The Intel part's base clock is notably lower, though its boost clock of 4.40 GHz exceeds the EPYC's 4.00 GHz boost.

TDP ratings show an extreme divergence. The EPYC 75F3 has a TDP of 280, while the Core i5-1235U has a TDP of 15. This 265-point difference illustrates the power envelope gap between a server processor and a mobile processor.

Socket compatibility is entirely different: AMD Socket SP3 for the EPYC, Intel BGA 1744 for the Core i5. The EPYC's socket supports the massive 256 MB L3 cache and eight-channel memory, while the BGA 1744 socket is soldered for mobile use.

Memory support differs in both type and channel count. The EPYC supports DDR4 only, across eight channels, with 204.8 GB/s bandwidth. The Core i5-1235U supports DDR4 and DDR5 across dual channels, though its bandwidth is not recorded.

ECC memory is supported on the EPYC 75F3 but not on the Core i5-1235U. PCIe lanes also differ: 128 lanes for the EPYC versus 20 lanes for the Intel part, both Gen 4.

Integrated graphics appear only on the Intel part, with Iris Xe 80EU. The EPYC 75F3 has no integrated graphics listed.

Process node and foundry differ: 7 nm TSMC for the EPYC, 10 nm Intel for the Core i5. Transistor count is recorded for the EPYC at 33,200 million, while the Intel part's transistor count is not listed in the database. Die size shows 8x 81 mm² for the EPYC, with no die size recorded for the Intel part.

Release dates differ by roughly a year. The EPYC 75F3 was released on 2021-03-14, while the Core i5-1235U was released on 2022-02-22. The EPYC has a recorded launch MSRP of $4860, while the Intel part has no launch MSRP in the database.

The Verdict

The data points to a clear conclusion: the AMD EPYC 75F3 is the dominant processor in every recorded benchmark comparison. It wins all six head-to-head tests, with margins between 461% and 465.2%. No benchmark in the head-to-head set favors the Intel Core i5-1235U.

The EPYC 75F3's advantages stem from its core count, cache size, memory bandwidth, and per-core efficiency. Its 256 MB L3 cache and eight-channel memory subsystem provide a foundation for high-throughput workloads. The Core i5-1235U cannot match these resources.

However, the two processors serve entirely different markets. The EPYC 75F3 is a Server/Workstation part with a TDP of 280, designed for socketed platforms with extensive I/O. The Core i5-1235U is a Mobile part with a TDP of 15, built for battery-powered systems with integrated graphics and soldered packaging.

The benchmark deltas are so lopsided that comparing them as direct competitors is not meaningful for most use cases. The EPYC 75F3 belongs in servers and workstations where its 32 cores, 64 threads, and 204.8 GB/s memory bandwidth can be fully utilized. The Core i5-1235U belongs in laptops where its modest power draw and integrated graphics make it suitable for everyday mobile computing.

The percentile rankings place both at the 70th percentile among all CPUs, but this masks the vast differences in their benchmark distributions. The EPYC's average benchmark score is 15859, while the Intel part's average is 16770. The Intel part actually has a higher average score, despite losing every head-to-head test, because its additional Geekbench and PassMark entries raise its average. This illustrates how different benchmark suites can shift aggregate scores.

Buyers should choose based on platform requirements, not raw benchmark comparisons. The EPYC 75F3 is the clear choice for server racks and workstation builds that need maximum core counts and memory bandwidth. The Core i5-1235U is the appropriate choice for mobile devices that need integrated graphics, low power consumption, and a compact BGA package.

Where Each One Wins

The AMD EPYC 75F3 wins every recorded head-to-head benchmark. In Cinebench R15, R20, and R23, it leads by roughly 461% in multicore tests and by 461.3% to 465.2% in single-core tests. The EPYC is the winner for rendering workloads, server-side compilation, database operations, and any task that can leverage its 32 cores, 64 threads, and 256 MB L3 cache.

The EPYC 75F3 also wins in memory bandwidth, with 204.8 GB/s across eight DDR4 channels. Its 128 PCIe Gen 4 lanes support high-density storage and accelerator configurations. ECC memory support makes it suitable for error-sensitive enterprise workloads. The production status is Active, and its release date of 2021-03-14 means it has been on the market longer than the Intel part.

The Intel Core i5-1235U wins no head-to-head benchmarks, but it holds advantages in specific specification areas. Its boost clock of 4.40 GHz exceeds the EPYC's 4.00 GHz boost. It supports both DDR4 and DDR5 memory, giving platform designers flexibility. Its integrated Iris Xe 80EU graphics eliminate the need for a discrete GPU in basic display tasks. Its 15 TDP makes it suitable for fanless or low-power mobile designs.

The Core i5-1235U's standalone benchmarks show strengths in specific PassMark tasks. Its data compression score of 147450 and integer math score of 48553 indicate capable general-purpose computing. Its floating point math score of 43303 and extended instructions score of 8176 suggest reasonable performance for everyday productivity applications.

For mobile use cases, the Core i5-1235U's lower TDP, integrated graphics, and 10-core hybrid design make it the only viable choice between the two, since the EPYC 75F3 cannot fit in a mobile platform. The EPYC 75F3, conversely, is the only viable choice for socketed server platforms that require eight-channel memory and 128 PCIe lanes.

The database records no benchmark wins for the Intel part in head-to-head comparisons. The EPYC 75F3's sweep is comprehensive across all three Cinebench versions, covering both multicore and single-core tests. Users seeking rendering performance should select the EPYC 75F3 without hesitation, while users seeking a low-power mobile processor have only the Core i5-1235U as an option in this pairing.