AMD EPYC 7543P vs Intel Core i5-1235U Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive comparison. Across all six recorded head-to-head tests, the AMD EPYC 7543P wins outright, with the Intel Core i5-1235U trailing by a consistent margin of roughly 82.8% to 82.9% in every workload. This uniformity is striking: regardless of whether the test is single-threaded or multi-threaded, the performance gap remains nearly identical.

In Cinebench R15 multicore, the EPYC 7543P scores 5713 against the i5-1235U’s 985. That is a deficit of 82.8% for the Intel part. The single-core variant shows the same pattern: 806 versus 138, a delta of 82.9%. The fact that the single-core gap is essentially the same as the multicore gap suggests the difference is not merely a matter of core count, but also of per-core throughput.

Moving to Cinebench R20, the EPYC 7543P posts 23806 in the multicore test, while the i5-1235U manages 4105. Again, the delta is 82.8%. In R20 single-core, the scores are 3360 and 579, respectively, with the same delta of 82.8%. The R23 results continue the trend: 56683 versus 9774 in multicore, and 8002 versus 1379 in single-core, both at an 82.8% gap.

What does this mean in practical terms? The EPYC 7543P delivers more than five times the multicore performance of the i5-1235U in each Cinebench generation. For single-core, the multiplier is closer to five or six times depending on the test. The i5-1235U is not competitive in any of these direct comparisons.

It is worth remembering the i5-1235U has no benchmark wins in this head-to-head set. The record shows zero wins for the Intel part and six for the AMD part. The database’s average benchmark score for the i5-1235U is 16770, while the EPYC 7543P sits at 16395. Those averages are close, but they are computed across different test suites, so they do not reflect the direct Cinebench comparison.

The EPYC 7543P also holds a 70th percentile ranking among all CPUs, and the i5-1235U matches that same 70th percentile. This means both processors sit at the same percentile tier in the overall database, despite the massive gap in the head-to-head tests. The explanation lies in the fact that the i5-1235U has additional benchmark results (Geekbench, Passmark tests) that pull its average up, while the EPYC 7543P only has Cinebench scores recorded in this comparison.

Where Each One Wins

The data gives a clear use-case split. The EPYC 7543P wins every recorded benchmark category, but the nature of those wins matters for real-world workloads.

In multi-threaded rendering tasks, the EPYC 7543P is in a different class. Cinebench R23 multicore at 56683 compared to 9774 means the AMD part is roughly 5.8 times faster in this specific workload. That level of performance is designed for server and workstation environments where sustained all-core throughput is the primary requirement. The 32 cores and 64 threads of the EPYC 7543P, combined with 256 MB of shared L3 cache, are the architectural foundations for this result.

The single-core scores also favor the EPYC 7543P, though the margin is similar in percentage terms. In Cinebench R23 single-core, the EPYC 7543P scores 8002 versus 1379 for the i5-1235U. This is notable because single-core performance is often considered a strength of lower-power mobile parts. That is not the case here. The EPYC 7543P’s Zen 3 architecture at a 2.80 GHz base and 3.70 GHz boost delivers far higher per-thread performance than the i5-1235U’s 1.30 GHz base and 4.40 GHz boost in these tests.

For the i5-1235U, the recorded strengths lie outside the head-to-head tests. Its Passmark data shows a single-thread score of 3151, which is competitive for a mobile processor. Its Geekbench scores, 1609 single-core and 5308 multi-core, reflect a design aimed at everyday mobile workloads. The i5-1235U also has integrated graphics in the form of Iris Xe 80EU, which the EPYC 7543P lacks entirely. That makes the Intel part suitable for systems that do not require a discrete GPU, a scenario where the EPYC 7543P cannot operate without external graphics hardware.

The i5-1235U’s power envelope is another distinguishing factor. With a 15 W TDP, it is designed for passive or low-noise cooling in thin laptops. The EPYC 7543P, at 225 W TDP, requires substantial cooling infrastructure and is intended for rack-mounted servers or workstation chassis. The i5-1235U’s dual-channel memory support and DDR4/DDR5 compatibility suit it to mainstream laptops, while the EPYC 7543P’s eight-channel DDR4 support with 204.8 GB/s bandwidth targets memory-intensive server workloads.

The Verdict

The verdict from the recorded data is unambiguous. For any workload that appears in the head-to-head benchmark set, the AMD EPYC 7543P is the superior processor. The only question is whether the i5-1235U has a role at all, and the answer depends entirely on the use case.

The EPYC 7543P should be chosen for server, workstation, or any sustained multi-threaded computing environment. Its 32 cores, 64 threads, and 256 MB of L3 cache deliver Cinebench R23 multicore scores of 56683, which is 82.8% ahead of the i5-1235U. Its eight-channel memory bus and 204.8 GB/s bandwidth make it suited to database, virtualization, and scientific computing workloads. The processor supports ECC memory, a requirement for many server deployments. Its launch MSRP was $2730.

The i5-1235U should be chosen for mobile devices where power consumption is the dominant constraint. Its 15 W TDP, integrated Iris Xe graphics, and compact BGA 1744 socket make it a viable option for ultraportable laptops. The Passmark data shows respectable everyday performance: 3151 in single-thread, 12923 in multithread, 147450 in data compression, and 9347 in data encryption. These numbers indicate a capable mainstream mobile processor.

The database places both parts at the 70th percentile of all CPUs, which is a useful reminder that percentile rankings are context-dependent. The i5-1235U’s average benchmark score of 16770 is actually higher than the EPYC 7543P’s 16395, but this is because the averages include different test sets. The i5-1235U benefits from including Geekbench and Passmark results, while the EPYC 7543P only has Cinebench scores in this record.

The nearest rivals for the i5-1235U are the Intel Core Ultra 5 115U (0.1% ahead), AMD Ryzen 3 7335U (0.3% behind), Intel Core i3-12100E (0.5% behind), and AMD Ryzen 3 8440U (0.6% ahead). These are all close competitors, confirming that the i5-1235U sits in a densely packed mobile performance tier. The nearest rivals for the EPYC 7543P are the AMD Ryzen 5 4600H (0.3% ahead), Intel Core i7-1260U (0.5% ahead), Intel Core i5-10600KF (1% ahead), and Intel Core i7-10850H (1.2% ahead). These rivals are all mainstream processors, not server parts, which reflects the fact that the EPYC 7543P’s average score is dragged down by its limited benchmark set.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7543P has 32 cores and 64 threads. The Intel Core i5-1235U has 10 cores and 12 threads.

Q: What is the performance difference in Cinebench R23 multicore?

A: The EPYC 7543P scores 56683, while the i5-1235U scores 9774. The EPYC 7543P leads by 82.8% in this test.

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

A: Yes, it has Iris Xe 80EU integrated graphics. The AMD EPYC 7543P has no integrated graphics.

Q: What memory configurations do the two processors support?

A: The i5-1235U supports dual-channel DDR4 and DDR5 memory. The EPYC 7543P supports eight-channel DDR4 with a memory bandwidth of 204.8 GB/s.

Q: Which processor supports ECC memory?

A: The AMD EPYC 7543P supports ECC memory. The Intel Core i5-1235U does not.

Q: What are the TDP ratings for both processors?

A: The i5-1235U has a TDP of 15 W. The EPYC 7543P has a TDP of 225 W.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i5-1235U is built on Alder Lake architecture, specifically the Alder Lake-U variant, using Intel’s 10 nm process node. The AMD EPYC 7543P uses Zen 3 architecture, codenamed Milan, fabricated on TSMC’s 7 nm process.

The i5-1235U has 10 cores and 12 threads, which indicates a hybrid arrangement of performance and efficiency cores, though the data does not specify the exact mix. Its cache configuration includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3. The base clock is 1300 MHz and the boost clock is 4400 MHz. The socket is Intel BGA 1744, and the part is classified as a mobile processor. It was released on 2022-02-22.

The EPYC 7543P has 32 cores and 64 threads, a conventional symmetric design. Its cache includes 64 KB of L1 per core, 512 KB of L2 per core, and 256 MB of shared L3. The base clock is 2800 MHz and the boost clock is 3700 MHz. The socket is AMD Socket SP3, and the part is classified as server/workstation. It uses 33,200 million transistors across 8 chiplets, each with a die size of 81 mm². The part number is 100-000000341100-100000341WOF. It was released on 2021-03-14.

Memory architecture differs substantially. The i5-1235U supports both DDR4 and DDR5 over a dual-channel bus, with no ECC support. The EPYC 7543P supports DDR4 over an eight-channel bus with a peak bandwidth of 204.8 GB/s and includes ECC support. PCIe connectivity also differs: the i5-1235U provides 20 PCIe Gen 4 lanes from the CPU, while the EPYC 7543P provides 128 PCIe Gen 4 lanes.

The process node difference is notable. Intel’s 10 nm for the i5-1235U versus TSMC’s 7 nm for the EPYC 7543P is a generational distinction, but the two parts target entirely different markets. The i5-1235U is a low-power mobile part with integrated graphics, while the EPYC 7543P is a high-core-count server processor without any integrated graphics. The transistor count of the EPYC 7543P, 33,200 million, reflects the complexity of the 32-core design, while the i5-1235U’s transistor count is not recorded in the database.

The market segments explain the benchmark results. A 15 W mobile processor is designed for battery life and light to moderate workloads. A 225 W server processor is designed for maximum throughput in data centers. The Cinebench results reflect this divide, but they do not tell the full story. The i5-1235U’s Passmark scores, including 43303 in floating point math and 48553 in integer math, show it is capable in everyday computing tasks. The EPYC 7543P’s strengths are in sustained, parallel workloads where its 64 threads and 256 MB of L3 cache can be fully utilized.

Both processors are currently marked as active in production. The i5-1235U was released in 2022, and the EPYC 7543P was released in 2021. Neither has a record of being discontinued. For buyers, the choice is not between two similar products, but between two completely different classes of hardware. The data supports the EPYC 7543P for compute-heavy server workloads and the i5-1235U for power-sensitive mobile applications.