AMD EPYC 7343 vs Intel Core Ultra 5 250KF Plus Comparison

The Intel Core Ultra 5 250KF Plus and the AMD EPYC 7343 occupy different corners of the processor market, yet their benchmark data places them within striking distance of each other in aggregate performance. The recorded measurements show the Intel part winning 13 of the 17 head-to-head tests, while the AMD EPYC takes 4. Both processors sit at the 93rd percentile among all CPUs in the database, with the Intel part averaging a benchmark score of 66159 and the EPYC averaging 64202. That gap of roughly 3% in average score is small enough that the real distinction comes down to workload type, platform features, and the specific strengths each design brings to the table.

Where Each One Wins

The Intel Core Ultra 5 250KF Plus demonstrates a clear advantage in single-threaded and lightly threaded workloads. The PassMark single-thread test shows the Intel part scoring 4698 against the EPYC's 2740, a 71.5% difference. Cinebench R23 single-core follows the same pattern, with Intel at 6030 and AMD at 5237, a 15.1% lead. This dominance extends into every Cinebench iteration recorded, from R15 through R23, where the Intel processor leads by roughly 15% in both single-core and multi-core runs. The floating-point math test is another area of Intel strength, with a score of 159824 against 86311, a massive 85.2% advantage. Extended instructions also favor Intel, 42880 versus 35626, a 20.4% margin.

The AMD EPYC 7343 counters in specific throughput-oriented tasks. Integer math is the largest win for the EPYC, scoring 156033 against Intel's 123030, a 21.2% advantage. Data compression also goes to AMD, with 589770 versus 553155, a 6.2% lead. The physics test shows EPYC ahead at 4774 versus 3183, a 33.3% margin, and random string sorting is essentially tied with AMD ahead by only 0.5% (67576 versus 67209). These wins point to a processor that handles integer-heavy parallel workloads and memory-bandwidth-sensitive tasks well, despite losing most other comparisons.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core Ultra 5 250KF Plus uses the Arrow Lake Refresh codename from the Core Ultra Series 2, built on a 3 nm process at TSMC. It packs 18 cores and 18 threads, meaning no hyperthreading, with a base clock of 4.20 GHz and a boost clock of 5.30 GHz. The thermal design power is 125 watts. The cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. It supports DDR5 memory over a dual-channel bus, with a recorded memory bandwidth of 115.2 GB/s. The PCIe interface is Gen 5 with 20 lanes from the CPU. ECC memory is supported. The processor uses Intel Socket 1851 and has an unlocked multiplier.

The AMD EPYC 7343 is a Zen 3 part from the EPYC 7003 series, codenamed Milan, built on a 7 nm process also at TSMC. It has 16 cores and 32 threads, with SMT enabled. Base clock is 3.20 GHz and boost clock is 3.90 GHz. The TDP is 190 watts. Cache configuration differs sharply: 64 KB L1 per core, 512 KB L2 per core, and a large 128 MB shared L3. Memory support is DDR4 over an eight-channel bus, giving a much higher memory bandwidth of 204.8 GB/s. PCIe is Gen 4 with 128 lanes from the CPU. ECC memory is supported. The socket is AMD Socket SP3, and the multiplier is locked. The EPYC uses a chiplet design with four dies, each 81 mm², totaling a die size that differs from Intel's monolithic 243 mm² piece.

Transistor counts are close, with Intel at 17,800 million and AMD at 16,600 million. The process node difference (3 nm versus 7 nm) explains how Intel fits similar transistor counts into a smaller, denser package. The EPYC's eight-channel memory interface and 128 PCIe lanes are clearly server-oriented, while Intel's dual-channel DDR5 and 20 Gen 5 lanes target desktop use.

The Verdict

The data paints a straightforward picture for most desktop users. The Intel Core Ultra 5 250KF Plus is the stronger all-around performer in the benchmark suite, winning the majority of tests with particularly large margins in single-threaded work, floating-point math, and encryption. Its 3 nm process, higher clocks, and modern platform make it the pick for anyone building a desktop system where responsiveness, gaming-adjacent workloads, and general productivity are the priorities. The 71.5% lead in single-thread PassMark and 85.2% lead in floating-point math are not minor edges; they represent a fundamentally faster core design for latency-sensitive tasks.

The AMD EPYC 7343 justifies its existence in server or workstation environments where its specific strengths matter. The 21.2% integer math advantage, 33.3% physics lead, and 6.2% compression win, combined with 128 PCIe Gen 4 lanes and 204.8 GB/s of memory bandwidth, make it suitable for database, virtualization, and high-throughput parallel integer workloads. The 16 cores with 32 threads provide more thread count than Intel's 18 non-hyperthreaded cores, which helps in heavily threaded integer tasks. The 128 MB L3 cache is a substantial resource for workloads that fit within it.

For a single-socket desktop build, the Intel part wins. For a rack server running integer-heavy parallel processes, the EPYC is the logical choice. The average benchmark scores are close, but the distribution of wins is not. Intel dominates where most desktop software spends its time. AMD dominates in a narrower set of server-oriented tasks.

FAQ

Q: Which processor has better single-thread performance?

A: The Intel Core Ultra 5 250KF Plus leads decisively. PassMark single-thread shows 4698 versus 2740 for the EPYC, a 71.5% margin. Cinebench R23 single-core also favors Intel, 6030 versus 5237, a 15.1% lead.

Q: Does the AMD EPYC 7343 have any benchmark wins?

A: Yes, it wins four head-to-head tests: data compression (589770 versus 553155), integer math (156033 versus 123030), physics (4774 versus 3183), and random string sorting (67576 versus 67209). The integer math win is the largest at 21.2%.

Q: How do the core and thread counts compare?

A: The Intel part has 18 cores and 18 threads, meaning no simultaneous multithreading. The AMD EPYC has 16 cores and 32 threads, using SMT. The EPYC has more threads despite fewer physical cores.

Q: What memory types do these processors support?

A: The Intel Core Ultra 5 250KF Plus supports DDR5 over a dual-channel bus with 115.2 GB/s bandwidth. The AMD EPYC 7343 supports DDR4 over an eight-channel bus with 204.8 GB/s bandwidth. Both support ECC memory.

Q: Which processor is newer?

A: The Intel part has a release date of March 10, 2026. The AMD EPYC 7343 was released on March 14, 2021. The Intel processor is much newer.

Q: How do the average benchmark scores compare?

A: The Intel Core Ultra 5 250KF Plus averages 66159 across all recorded benchmarks, while the AMD EPYC 7343 averages 64202. Both sit at the 93rd percentile of all CPUs in the database.

Head-to-Head Benchmarks

The largest single margin in the entire comparison belongs to the Intel part in floating-point math. The score of 159824 against 86311 represents an 85.2% advantage. This is not a subtle difference; it suggests a completely different class of floating-point execution capability. The PassMark single-thread test shows a similarly dramatic gap at 71.5%, with Intel at 4698 and AMD at 2740. These two results alone tell the story of a much faster single-core design.

The Cinebench suite is uniformly in Intel's favor. R15 multi-core shows 4305 versus 3739, a 15.1% lead. R15 single-core is 607 versus 527, a 15.2% lead. R20 multi-core gives 17941 versus 15580, again 15.2%. R20 single-core is 2532 versus 2199, a 15.1% margin. R23 multi-core shows 42718 versus 37097, a 15.2% lead, and R23 single-core is 6030 versus 5237, a 15.1% margin. The consistency of that roughly 15% gap across every Cinebench iteration is notable. It holds for both single and multi-core, indicating a generational efficiency advantage rather than a workload-specific quirk.

Data encryption goes to Intel with 41292 versus 37454, a 10.2% lead. Extended instructions favor Intel at 42880 versus 35626, a 20.4% margin. Finding prime numbers shows Intel at 452 versus 382, an 18.3% advantage. The multithread test gives Intel 50146 versus 43644, a 14.9% lead.

On the AMD side, the most substantial win is integer math at 156033 versus 123030, a 21.2% margin. This is a strong result for a server processor handling integer-heavy parallel code. Physics shows EPYC at 4774 versus Intel's 3183, a 33.3% lead, which is the largest AMD win in percentage terms. Data compression goes to AMD at 589770 versus 553155, a 6.2% edge. Random string sorting is nearly a tie, with AMD at 67576 and Intel at 67209, a 0.5% difference.

The overall count stands at 13 wins for Intel and 4 for AMD. The margin structure matters more than the raw count. Intel's wins include many of the most common productivity and general-purpose tests. AMD's wins are concentrated in specific parallel integer and memory-bound tasks.

Specification Differences

The core and thread counts differ meaningfully. Intel uses 18 cores with 18 threads, while AMD uses 16 cores with 32 threads. The EPYC's SMT doubles its thread count, which explains its wins in integer math and physics. Clock speeds favor Intel significantly, with a base of 4.20 GHz versus 3.20 GHz and a boost of 5.30 GHz versus 3.90 GHz. The TDP also differs, with Intel at 125 watts and AMD at 190 watts, a 65-watt gap that reflects the EPYC's server-oriented power budget.

Cache configurations are a major differentiator. Intel allocates 192 KB L1 and 3 MB L2 per core, with 30 MB shared L3. AMD allocates 64 KB L1 and 512 KB L2 per core, with 128 MB shared L3. The EPYC's L3 is over four times larger, which helps in workloads with large working sets. Intel's larger per-core L2 may help with latency-sensitive single-thread tasks.

Memory support shows the platform split clearly. Intel uses DDR5 on a dual-channel bus with 115.2 GB/s. AMD uses DDR4 on an eight-channel bus with 204.8 GB/s. The EPYC has nearly double the memory bandwidth, which supports its server role. PCIe connectivity also diverges: Intel offers Gen 5 with 20 lanes, while AMD offers Gen 4 with 128 lanes. The EPYC's lane count is six times higher, though on an older standard.

Process node and physical design differ as well. Intel is on 3 nm with a 243 mm² die. AMD is on 7 nm with four 81 mm² dies. Transistor counts are close at 17,800 million for Intel and 16,600 million for AMD. The EPYC's chiplet layout enables its massive core count and memory channels, while Intel's monolithic die allows higher clocks on a smaller node. The launch MSRP for the Intel part is $184, while the EPYC's launch MSRP is $1565. Both processors are currently active in production.