AMD EPYC 7443 vs Intel Core i7-1250U Comparison

Head-to-Head Benchmarks

The benchmark data presents a stark contrast between these two processors. Across every recorded Cinebench test, the AMD EPYC 7443 decisively outperforms the Intel Core i7-1250U. The database records six head-to-head benchmark comparisons, and the AMD EPYC 7443 wins all six. The magnitude of these victories varies considerably, from a 203.1% lead in Cinebench R15 single-core to a staggering 581.6% advantage in Cinebench R23 multi-core.

Starting with multi-core workloads, the results favor the server processor overwhelmingly. In Cinebench R15 multi-core, the EPYC 7443 scores 4856 against the i7-1250U's 1172.94, a 314% difference. The gap widens in Cinebench R20 multi-core, where the EPYC 7443 records 20236 points compared to 3983 points for the Intel chip, a 408.1% lead. The most extreme divergence appears in Cinebench R23 multi-core: the AMD processor scores 48183, while the Intel mobile chip manages only 7069, placing the EPYC 7443 581.6% ahead.

Single-core benchmarks tell a similar story, though with somewhat smaller margins. In Cinebench R15 single-core, the EPYC 7443 scores 685 versus 226 for the i7-1250U, a 203.1% advantage. The Cinebench R20 single-core test shows the AMD chip at 2856 points against 562 points for Intel, a 408.2% difference. Cinebench R23 single-core closes the gap slightly in relative terms, with the EPYC 7443 at 6802 and the i7-1250U at 1574, still a 332.1% lead.

These results indicate that the EPYC 7443 is not merely faster, it operates in a different performance class entirely. The Intel Core i7-1250U, designed for mobile efficiency, cannot compete with the raw throughput of a 24-core server processor. The data suggests that any workload reliant on sustained CPU performance would favor the AMD part by a wide margin.

Architecture Differences

The underlying architectures explain the performance gulf. The AMD EPYC 7443 belongs to the EPYC 7003 series, built on the Zen 3 architecture with the codename Milan. It uses a 7 nm process node fabricated by TSMC, containing 16,600 million transistors across a die size of 4x 81 mm². This server-class processor features 24 cores and 48 threads, with a base clock of 2.85 GHz and a boost clock of 4.00 GHz. The thermal design power is 200 watts, reflecting its workstation and server orientation. It operates on AMD Socket SP3.

The Intel Core i7-1250U is a fundamentally different product. It uses the Alder Lake architecture, specifically the Alder Lake-U codename, built on Intel's 10 nm process. It has 10 cores and 12 threads, with a base clock of 1100.00 MHz and a boost clock of 4.70 GHz. Its thermal design power is just 9 watts, an extreme contrast to the EPYC 7443. The i7-1250U uses Intel BGA 1781 socket and targets the mobile segment.

Cache configurations differ substantially. The EPYC 7443 provides 64 KB of L1 cache per core, 512 KB of L2 cache per core, and 128 MB of shared L3 cache. The i7-1250U offers 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 12 MB of shared L3 cache. The AMD part's massive L3 cache, over ten times larger, supports its server workloads.

Memory support also separates the two. The EPYC 7443 supports DDR4 memory with an eight-channel memory bus and a recorded memory bandwidth of 204.8 GB/s, along with ECC memory support. The i7-1250U supports both DDR4 and DDR5 across a dual-channel memory bus, with no ECC support and no memory bandwidth figure recorded in the database. The EPYC 7443 also offers PCIe Gen 4 with 128 lanes (CPU only), while the i7-1250U provides PCIe Gen 4 without a lane count listed. The Intel chip includes integrated Iris Xe 96EU graphics, while the AMD server processor has no integrated graphics.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core i7-1250U has a boost clock of 4.70 GHz, while the AMD EPYC 7443 has a boost clock of 4.00 GHz.

Q: What is the difference in multi-core performance in Cinebench R23?

A: The AMD EPYC 7443 scores 48183 in Cinebench R23 multi-core, while the Intel Core i7-1250U scores 7069. This places the AMD processor 581.6% ahead.

Q: How do the core counts compare?

A: The AMD EPYC 7443 has 24 cores and 48 threads. The Intel Core i7-1250U has 10 cores and 12 threads.

Q: Which processor supports ECC memory?

A: The AMD EPYC 7443 supports ECC memory. The Intel Core i7-1250U does not support ECC memory.

Q: What is the thermal design power of each processor?

A: The AMD EPYC 7443 has a thermal design power of 200 watts. The Intel Core i7-1250U has a thermal design power of 9 watts.

Q: Which processor has a larger L3 cache?

A: The AMD EPYC 7443 has 128 MB of shared L3 cache. The Intel Core i7-1250U has 12 MB of shared L3 cache.

The Verdict

The recorded data supports one clear conclusion: these processors serve entirely different markets and should be chosen based on workload requirements, not direct comparison. The AMD EPYC 7443 dominates every benchmark in the head-to-head comparison. Its scores in multi-core tests, particularly the 581.6% lead in Cinebench R23, demonstrate that it is built for sustained, heavy parallel processing. The 24-core, 48-thread configuration with 128 MB of L3 cache and eight-channel memory support positions it as a server and workstation processor for demanding enterprise applications.

The Intel Core i7-1250U, with its 10 cores, 12 threads, and 9-watt thermal design power, targets mobile computing where power efficiency matters more than raw throughput. Its integrated Iris Xe 96EU graphics provide capabilities the EPYC 7443 lacks entirely. The i7-1250U's boost clock of 4.70 GHz exceeds the EPYC 7443's 4.00 GHz, suggesting it can handle lighter, bursty workloads with responsiveness. However, its Cinebench R23 multi-core score of 7069 versus 48183 for the AMD part indicates it cannot sustain heavy compute loads.

Users who prioritize maximum CPU performance for server, virtualization, or workstation tasks should select the AMD EPYC 7443. Users who require a mobile processor with integrated graphics and minimal power consumption should select the Intel Core i7-1250U. The data does not support a crossover scenario where the Intel chip outperforms the AMD part in any recorded benchmark.

Specification Differences

The two processors differ in nearly every specification field recorded in the database. The AMD EPYC 7443 belongs to the EPYC 7003 series with a Zen 3 architecture and Milan codename. The Intel Core i7-1250U uses the Alder Lake architecture with the Alder Lake-U codename. The EPYC 7443 has 24 cores and 48 threads; the i7-1250U has 10 cores and 12 threads. Base clocks differ at 2.85 GHz for AMD and 1100.00 MHz for Intel. Boost clocks are 4.00 GHz for AMD and 4.70 GHz for Intel.

Thermal design power shows the largest gap: 200 watts for the EPYC 7443 versus 9 watts for the i7-1250U. The AMD processor uses AMD Socket SP3, while the Intel chip uses Intel BGA 1781. Process nodes differ at 7 nm for AMD (TSMC foundry) and 10 nm for Intel (Intel foundry). The EPYC 7443 contains 16,600 million transistors across a 4x 81 mm² die size; no transistor or die size data exists for the i7-1250U.

Cache layouts differ per core and in total. The EPYC 7443 provides 64 KB L1 per core, 512 KB L2 per core, and 128 MB shared L3. The i7-1250U provides 80 KB L1 per core, 1.25 MB L2 per core, and 12 MB shared L3. Memory support shows DDR4 for AMD versus DDR4 and DDR5 for Intel. Memory bus widths are eight-channel for AMD and dual-channel for Intel. Memory bandwidth is recorded as 204.8 GB/s for AMD, with no figure for Intel. ECC memory support exists on AMD only. PCIe configurations list Gen 4 with 128 lanes (CPU only) for AMD and Gen 4 with no lane count for Intel. Integrated graphics appear only on the Intel chip as Iris Xe 96EU. Market segments are Server/Workstation for AMD and Mobile for Intel.

Release dates differ: the EPYC 7443 launched on 2021-03-14, and the i7-1250U launched on 2022-02-22. The AMD processor has a launch MSRP of $2010, while no launch MSRP exists for the Intel chip. Both processors are active in production and have locked multipliers.

Where Each One Wins

The AMD EPYC 7443 wins all recorded benchmark comparisons against the Intel Core i7-1250U. Its largest victories appear in multi-core workloads, with a 581.6% lead in Cinebench R23 multi-core and a 408.1% lead in Cinebench R20 multi-core. These results indicate the EPYC 7443 is the choice for compute-heavy server workloads, database processing, virtualization, and any task that scales across many cores. Its 128 MB L3 cache and eight-channel memory with 204.8 GB/s bandwidth support data-intensive applications. The 200-watt thermal design power signals that this processor expects a robust cooling solution and a platform designed for sustained operation.

The Intel Core i7-1250U, despite losing every head-to-head benchmark, holds advantages in areas not captured by the Cinebench tests. Its 9-watt thermal design power makes it suitable for fanless or low-power mobile designs. The integrated Iris Xe 96EU graphics provide display output and basic GPU acceleration without a discrete graphics card. Its boost clock of 4.70 GHz exceeds the EPYC 7443's 4.00 GHz, offering faster single-thread bursts for responsive everyday tasks. The dual-channel memory support for both DDR4 and DDR5 provides flexibility in system design. The i7-1250U's average benchmark score of 13351 places it near the Intel Core i7-7700K, which scores 13291 with a 0.5% delta, and the Intel Core i5-9500 at 13452 with a -0.7% delta.

The EPYC 7443's average benchmark score of 13936 positions it close to the Intel Core i7-8750H at 13868 with a 0.5% delta and the Intel Core i5-10400 at 14037 with a -0.7% delta. Both processors share a 68th percentile ranking among all CPUs in the database. The data shows that the EPYC 7443 excels in raw throughput, while the i7-1250U excels in power efficiency and platform flexibility. The choice depends entirely on whether the workload demands maximum compute or maximum mobility.