AMD EPYC 7543 vs Intel Core i3-10320 Comparison

The AMD EPYC 7543 and the Intel Core i3-10320 occupy opposite ends of the computing spectrum, yet both appear in the database with identical percentile rankings against all CPUs (69th). This coincidence masks a profound performance gap. The recorded data shows the EPYC 7543 winning every head-to-head benchmark, but the nature of those wins, and the architectural reasoning behind them, tells a more nuanced story than a simple sweep. The following analysis breaks down the raw numbers, the design philosophies, and the practical implications for different workloads.

Head-to-Head Benchmarks

The head-to-head results are unambiguous. In Cinebench R15 multi-core, the AMD EPYC 7543 scores 5393 against the Intel Core i3-10320's 855, a delta of 530.8%. The single-core test in the same suite shows a similar gap: 761 for the EPYC versus 120 for the i3, a 534.2% difference. Moving to Cinebench R20, the multi-core score for the EPYC is 22473, while the i3 manages 3564, again a 530.6% delta. The single-core R20 result mirrors this: 3172 versus 503, a 530.6% advantage.

The pattern persists in Cinebench R23. The EPYC 7543 posts a multi-core score of 53509, compared to 8486 for the i3-10320, a 530.6% gap. Single-core R23 shows 7554 versus 1198, also 530.6%. Across all six benchmarks, the AMD part wins, with deltas hovering around 530%. This consistency suggests a fixed performance ratio, not a workload-specific anomaly. The EPYC does not merely edge out the i3 in one test; it dominates every metric by a factor of roughly six.

What does this mean in practical terms? The data indicates that for any Cinebench render, the EPYC 7543 completes the task in a fraction of the time. The scores themselves, however, require context. The EPYC's average benchmark score sits at 15477, with the i3 at 14852. The nearest rivals for the EPYC include the Intel Core 5 211TE at 15370 (0.7% lower), the AMD Ryzen 3 7440U at 15682 (1.3% higher), and the Intel Core i5-11400H at 15749 (1.7% higher). For the i3, the closest competitors are the Intel Core i7-9750H at 14886 (0.2% lower), the AMD EPYC 74F3 at 14915 (0.4% lower), and the Intel Core i3-1315U at 15022 (1.1% higher). These averages show that the i3 is not a weak chip in its own right; it competes with older mobile and desktop parts. The EPYC, despite its massive thread count, lands in a similar average score range because its benchmarks are dominated by multi-threaded loads, while the i3's average is pulled by its single-thread and integer tasks. The head-to-head, however, isolates the Cinebench tests, where the EPYC's core count crushes the i3.

Architecture Differences

The core discrepancy is the thread count. The EPYC 7543 has 32 cores and 64 threads, built on AMD's Zen 3 architecture, codenamed Milan. The i3-10320 has 4 cores and 8 threads, using Intel's Comet Lake architecture. The process nodes differ substantially: the EPYC uses a 7 nm process from TSMC, while the i3 uses Intel's 14 nm process. This node advantage contributes to the EPYC's ability to pack 32 cores into a single socket.

Cache hierarchies diverge significantly. Both have 64 KB of L1 per core, but the L2 differs: the EPYC has 512 KB per core, the i3 has 256 KB per core. The L3 cache is the most striking difference. The EPYC offers 256 MB of shared L3, while the i3 has 8 MB shared. This 32x difference in L3 size is a primary driver of the EPYC's multi-threaded performance, as it can hold far more working data on-die.

Memory support also separates the two. The EPYC uses DDR4 over an eight-channel memory bus, achieving a bandwidth of 204.8 GB/s. The i3 uses DDR4 over a dual-channel bus, with only 42.7 GB/s. The EPYC also supports ECC memory, while the i3 does not. PCIe lanes present another gap: the EPYC provides Gen 4 with 128 lanes (CPU only), whereas the i3 offers Gen 3 with 16 lanes (CPU only). The i3 includes integrated UHD Graphics 630, while the EPYC has no integrated graphics, requiring a discrete GPU for display output.

The transistor count for the EPYC is listed as 33,200 million, spread across a die size of 8x 81 mm², using a chiplet design. The i3's transistor count and die size are not recorded in the database. The EPYC's release date is March 2021, while the i3 came out in April 2020. The EPYC's launch MSRP is $3761, stated here once as a reference point. The i3 has no recorded launch MSRP. Both processors have locked multipliers, meaning no overclocking via a multiplier adjustment.

Where Each One Wins

Given the benchmark data, the EPYC 7543 wins in every recorded Cinebench test. The multi-core tests favor the EPYC due to its 32 cores versus 4. For rendering, video encoding, scientific simulations, or any workload that scales with thread count, the EPYC's 64 threads provide a massive advantage. The single-core tests also favor the EPYC, which is notable because the i3 has a higher base clock (3.80 GHz versus 2.80 GHz) and boost clock (4.60 GHz versus 3.70 GHz). The EPYC's single-core score of 7554 in R23 versus 1198 for the i3 suggests that the Zen 3 architecture delivers higher instructions per clock, despite the lower clock speeds. The i3's higher clocks do not translate to a win in any benchmark.

The i3-10320, despite losing all head-to-head comparisons, still holds value in specific scenarios. Its integrated UHD Graphics 630 means it can run a desktop system without a discrete GPU. Its lower TDP of 91 watts (versus 225 for the EPYC) makes it suitable for compact or low-power builds. The i3's dual-channel memory support is simpler to implement on consumer motherboards, and its 16 PCIe Gen 3 lanes are sufficient for a single graphics card and an NVMe drive. The database shows the i3 winning in no benchmark against the EPYC, but its strengths lie in unmeasured areas like idle power consumption and platform cost (though price is not discussed here).

For the EPYC, the wins are not just about core count. The 256 MB L3 cache and eight-channel memory bandwidth make it ideal for database workloads, virtualization hosts, and high-performance computing. The ECC memory support is critical for servers where data integrity is paramount. The 128 PCIe Gen 4 lanes allow for multiple high-speed network adapters, storage controllers, and GPUs. The EPYC's production status is active, and it targets the server/workstation segment, while the i3 is an active desktop part.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7543 has 32 cores and 64 threads. The Intel Core i3-10320 has 4 cores and 8 threads.

Q: What is the difference in L3 cache size?

A: The EPYC 7543 has 256 MB of shared L3 cache. The i3-10320 has 8 MB of shared L3 cache.

Q: Does the Intel Core i3-10320 support ECC memory?

A: No, the i3-10320 does not support ECC memory. The AMD EPYC 7543 does support ECC memory.

Q: Which processor has a higher boost clock?

A: The Intel Core i3-10320 has a boost clock of 4.60 GHz, higher than the EPYC 7543's 3.70 GHz. Despite this, the EPYC wins in all single-core Cinebench benchmarks.

Q: What is the memory bandwidth for each processor?

A: The EPYC 7543 offers 204.8 GB/s via an eight-channel memory bus. The i3-10320 offers 42.7 GB/s via a dual-channel memory bus.

Q: Does either processor include integrated graphics?

A: The Intel Core i3-10320 includes UHD Graphics 630. The AMD EPYC 7543 has no integrated graphics.

The Verdict

The data points to a clear conclusion: the AMD EPYC 7543 is the superior processor for any workload measured in the database. Its 530.6% lead across all Cinebench tests, both multi-core and single-core, leaves no ambiguity. The EPYC's architecture, with 32 cores, 256 MB L3, and eight-channel DDR4, is designed for throughput. The i3-10320, with 4 cores and 8 MB L3, cannot compete in rendering or any parallel task.

A user should choose the EPYC 7543 if they are building a server or workstation that will run multi-threaded applications, virtual machines, or memory-intensive tasks. The ECC memory support and 128 PCIe Gen 4 lanes make it a platform for expansion and reliability. The i3-10320, however, serves a different purpose. Its integrated graphics and lower TDP make it a candidate for a basic desktop, a home theater PC, or a lightweight office machine. The i3's dual-channel memory and 16 PCIe Gen 3 lanes are adequate for everyday computing.

The identical 69th percentile rankings for both parts are misleading. The percentile is based on average benchmark scores across all CPUs, where the EPYC's average (15477) and the i3's average (14852) land in the same neighborhood. But the head-to-head reveals the true relationship: the EPYC is not 4% faster, it is over 500% faster in Cinebench. The i3's average is propped up by its PassMark scores, which are not in the head-to-head set. In the recorded comparison, the EPYC wins 6 out of 6 benchmarks. No recorded scenario favors the i3.

For a buyer with a server budget, the EPYC 7543 is the only choice based on performance. For a desktop user who needs a simple, low-power system, the i3-10320 is functional. The data does not support any other conclusion.

Specification Differences

The two processors differ in nearly every specification. The EPYC 7543 has 32 cores and 64 threads, while the i3-10320 has 4 cores and 8 threads. Base clocks are 2.80 GHz for the EPYC and 3.80 GHz for the i3. Boost clocks are 3.70 GHz for the EPYC and 4.60 GHz for the i3. TDP is 225 watts for the EPYC and 91 watts for the i3. Sockets are AMD Socket SP3 for the EPYC and Intel Socket 1200 for the i3.

The process node is 7 nm (TSMC) for the EPYC and 14 nm (Intel) for the i3. The L2 cache is 512 KB per core for the EPYC and 256 KB per core for the i3. L3 cache is 256 MB shared for the EPYC and 8 MB shared for the i3. Memory buses are eight-channel for the EPYC and dual-channel for the i3. Memory bandwidth is 204.8 GB/s versus 42.7 GB/s. ECC memory is supported on the EPYC but not the i3. PCIe is Gen 4 with 128 lanes for the EPYC and Gen 3 with 16 lanes for the i3. Integrated graphics are absent on the EPYC and present as UHD Graphics 630 on the i3.

Market segments differ: Server/Workstation for the EPYC, Desktop for the i3. Release dates are March 2021 for the EPYC and April 2020 for the i3. The EPYC has a launch MSRP of $3761; the i3 has none recorded. The EPYC's transistor count is 33,200 million, and its die size is 8x 81 mm²; the i3's values are not recorded. Both have locked multipliers. The EPYC's part number is 100-000000345100-100000345WOF, while the i3's is SRH3G.