AMD EPYC 7443 vs AMD Ryzen 3 4100 Comparison

The Verdict

The recorded benchmark data presents an unambiguous outcome: the AMD EPYC 7443 wins all six head-to-head comparisons against the AMD Ryzen 3 4100. The EPYC 7443 dominates every single benchmark in the database, with deltas ranging from 80.5% to 80.6% in favor of the server processor. There are no benchmark categories where the Ryzen 3 4100 takes a win, so any user requiring maximum compute throughput should select the EPYC 7443 without hesitation.

The Ryzen 3 4100 remains relevant only in contexts where its desktop-class characteristics matter: it uses AMD Socket AM4, draws 65 W TDP, and carries a launch MSRP of $99. The EPYC 7443 commands a launch MSRP of $2010, uses AMD Socket SP3, and consumes 200 W TDP. The data shows the EPYC 7443 delivers roughly five times the multi-threaded performance of the Ryzen 3 4100 across Cinebench R15, R20, and R23, which aligns with its 24 cores versus 4 cores and 48 threads versus 8 threads.

For buyers strictly evaluating compute performance per the recorded measurements, the EPYC 7443 is the only rational choice. The Ryzen 3 4100 exists in a different performance class entirely, with its 69th percentile standing among all CPUs versus the EPYC 7443's 68th percentile. Interestingly, the Ryzen 3 4100 actually holds a slightly higher percentile ranking despite losing every head-to-head test, which reflects the broader CPU population containing many lower-end server chips that the EPYC 7443 still outperforms.

Where Each One Wins

The EPYC 7443 wins everywhere in the recorded data. In Cinebench R15 multi-core, it scores 4856 against the Ryzen 3 4100's 946, a delta of 80.5%. In Cinebench R20 multi-core, the EPYC 7443 reaches 20236 versus 3945, again 80.5% ahead. The Cinebench R23 multi-core test shows 48183 versus 9394, maintaining the same 80.5% gap. Single-core tests follow the identical pattern: R15 single-core 685 versus 133, R20 single-core 2856 versus 556, and R23 single-core 6802 versus 1326, all with 80.5% or 80.6% deltas.

The Ryzen 3 4100 does not win a single recorded benchmark, so there is no use case where the data supports choosing it for raw performance. However, the Ryzen 3 4100 does offer characteristics that the EPYC 7443 lacks: an unlocked multiplier for overclocking, a desktop market segment designation, and a lower TDP of 65 W. These attributes do not appear in benchmark scores, but they define the product's intended usage scenario.

The EPYC 7443 targets server and workstation deployments, evidenced by its eight-channel memory bus, 204.8 GB/s memory bandwidth, ECC memory support, and 128 PCIe Gen 4 lanes. The Ryzen 3 4100 targets desktop builds with dual-channel memory, 51.2 GB/s bandwidth, no ECC support, and 8 PCIe Gen 3 lanes. Each processor wins in its own market segment, despite the EPYC 7443 winning every computational benchmark.

Architecture Differences

The two processors come from different AMD generations and designs. The Ryzen 3 4100 uses Zen 2 architecture with the Renoir codename, built on a 7 nm process at TSMC with 9,800 million transistors on a 156 mm² die. The EPYC 7443 uses Zen 3 architecture with the Milan codename, also on a 7 nm TSMC process, but with 16,600 million transistors spread across four 81 mm² dies.

Cache configurations differ substantially. Both have 64 KB L1 per core and 512 KB L2 per core, but the L3 cache diverges sharply: the Ryzen 3 4100 has 8 MB shared L3, while the EPYC 7443 has 128 MB shared L3. This 16-fold difference in L3 capacity directly impacts server workloads that rely on large working sets.

Memory architecture separates the two even further. The Ryzen 3 4100 supports dual-channel DDR4 with 51.2 GB/s bandwidth and no ECC. The EPYC 7443 supports eight-channel DDR4 with 204.8 GB/s bandwidth and ECC functionality. PCIe capabilities also differ: the Ryzen 3 4100 provides Gen 3 with 8 CPU lanes, while the EPYC 7443 provides Gen 4 with 128 CPU lanes. The EPYC 7443's multiplier is locked, whereas the Ryzen 3 4100 has an unlocked multiplier. Both share the same 4.00 GHz boost clock, though the Ryzen 3 4100 has a higher base clock at 3.80 GHz versus 2.85 GHz.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7443 has 24 cores and 48 threads, while the AMD Ryzen 3 4100 has 4 cores and 8 threads. The EPYC 7443 therefore provides six times the core count and six times the thread count.

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

A: The EPYC 7443 scores 48183 in Cinebench R23 multi-core, while the Ryzen 3 4100 scores 9394. The EPYC 7443 leads by 80.5%, representing roughly a fivefold advantage in this render workload.

Q: Do both processors support ECC memory?

A: No. The EPYC 7443 supports ECC memory, while the Ryzen 3 4100 does not. This makes the EPYC 7443 suitable for error-sensitive server environments where data integrity is critical.

Q: What are the socket requirements for each processor?

A: The Ryzen 3 4100 uses AMD Socket AM4, which is a desktop platform. The EPYC 7443 uses AMD Socket SP3, which is a server platform. These sockets are not interchangeable.

Q: How does memory bandwidth compare between the two?

A: The EPYC 7443 provides 204.8 GB/s memory bandwidth through an eight-channel memory bus, while the Ryzen 3 4100 provides 51.2 GB/s through a dual-channel bus. The EPYC 7443 offers four times the memory bandwidth.

Q: Which processor has a higher single-core score in Cinebench R23?

A: The EPYC 7443 scores 6802 in Cinebench R23 single-core, while the Ryzen 3 4100 scores 1326. The EPYC 7443 leads by 80.5%, showing that its Zen 3 architecture delivers superior single-thread performance despite its lower base clock.

Head-to-Head Benchmarks

The database records six head-to-head comparisons, and the EPYC 7443 wins all of them. The smallest delta appears in Cinebench R15 single-core, where the EPYC 7443 leads by 80.6% with a score of 685 versus 133. Every other test shows exactly 80.5% deltas in the EPYC 7443's favor.

Cinebench R15 multi-core shows the EPYC 7443 at 4856 versus the Ryzen 3 4100's 946. This 80.5% gap translates to the EPYC 7443 delivering approximately 4.1 times the multi-threaded rendering performance. The single-core R15 test results in 685 versus 133, an 80.6% delta, which means the EPYC 7443 outperforms by roughly 4.2 times even on a single thread.

Cinebench R20 multi-core repeats the pattern: 20236 for the EPYC 7443 versus 3945 for the Ryzen 3 4100. The 80.5% delta corresponds to a 4.1x performance ratio. Single-core R20 shows 2856 versus 556, again 80.5% ahead. Cinebench R23 multi-core delivers the largest absolute gap in points: 48183 versus 9394, a difference of 38789 points yet still the same 80.5% delta. Single-core R23 closes the set with 6802 versus 1326.

The consistency of the deltas across all six benchmarks is notable. Whether the workload is single-threaded or multi-threaded, the EPYC 7443 maintains an 80.5% to 80.6% advantage over the Ryzen 3 4100. This uniformity suggests the performance gap stems from fundamental architectural superiority (Zen 3 versus Zen 2) rather than core-count scaling alone. The EPYC 7443's 128 MB L3 cache and eight-channel memory bandwidth likely contribute to this consistent lead in both single and multi-threaded scenarios.

Specification Differences

The two processors differ across nearly every specification category. Core count: 4 cores for the Ryzen 3 4100 versus 24 cores for the EPYC 7443. Thread count: 8 versus 48. Base clock: 3.80 GHz versus 2.85 GHz, favoring the Ryzen 3 4100. Boost clock: identical at 4.00 GHz for both. TDP: 65 W versus 200 W, with the Ryzen 3 4100 consuming substantially less power.

Socket: AMD Socket AM4 for the Ryzen 3 4100 versus AMD Socket SP3 for the EPYC 7443. Architecture: Zen 2 versus Zen 3. Codename: Renoir versus Milan. Generation: Ryzen 3 (Zen 2 Renoir) versus EPYC (Zen 3 Milan). Process node: both 7 nm at TSMC, but transistors differ at 9,800 million versus 16,600 million, and die size differs at 156 mm² versus 4x 81 mm².

Cache: L1 and L2 are identical per core (64 KB and 512 KB), but L3 differs at 8 MB shared versus 128 MB shared. Memory support: both use DDR4, but memory bus differs at dual-channel versus eight-channel. Memory bandwidth: 51.2 GB/s versus 204.8 GB/s. ECC memory: not supported versus supported. PCIe: Gen 3 with 8 lanes versus Gen 4 with 128 lanes. Market segment: Desktop versus Server/Workstation. Release date: April 2022 versus March 2021. Launch MSRP: $99 versus $2010. Multiplier: unlocked versus locked. Part numbers also differ, with the Ryzen 3 4100 using 100-000000510100-100000510BOX and the EPYC 7443 using 100-000000340100-100000340WOF. Neither processor includes integrated graphics.