AMD Ryzen 3 3100 vs Intel Xeon E3-1280 v5 Comparison

Where Each One Wins

The recorded benchmark data splits cleanly along generational lines. The AMD Ryzen 3 3100 wins both head-to-head comparisons, taking the multi-core and single-core Cinebench R15 tests outright. The Intel Xeon E3-1280 v5, by contrast, does not register a single win in the shared test suite. This is not a close contest: the Ryzen 3 3100 leads by 40.2% in multi-core and by 79.8% in single-core, which indicates a fundamental performance gap rather than a marginal tuning difference.

Looking at the broader database averages, the Ryzen 3 3100 posts an average benchmark score of 2055, while the Xeon E3-1280 v5 sits at 2029. That is a 1.3% gap in the Ryzen’s favor, but the individual test results tell a far more dramatic story. The Cinebench R15 numbers are the only shared benchmarks, and they show the Ryzen dominating. The Xeon does have additional Cinebench R20 and R23 scores in its own record, but those have no matching Ryzen data for direct comparison. What the database does show is that the Ryzen 3 3100 lands in the 46th percentile of all CPUs, while the Xeon E3-1280 v5 lands in the 45th percentile. The percentile difference is small, but the head-to-head deltas are not.

For use-case splits, the Ryzen 3 3100 is the clear choice for any workload that relies on single-threaded responsiveness or lightly threaded tasks. Its 79.8% single-core advantage in Cinebench R15 suggests faster reaction times in daily computing, older games, and applications that do not scale well across cores. The Xeon E3-1280 v5, despite being a server and workstation part, does not offer any compensating advantage in the measured tests. Its only potential edge comes from ECC memory support, which the Ryzen lacks, but that is a reliability feature rather than a performance one.

Architecture Differences

The two processors come from different eras and different design philosophies. The AMD Ryzen 3 3100 uses the Zen 2 architecture on a 7 nm process manufactured by TSMC, while the Intel Xeon E3-1280 v5 uses the older Skylake architecture on Intel’s 14 nm process. The process node difference is substantial: 7 nm versus 14 nm means the Ryzen packs its 3,800 million transistors into a 74 mm² die, while the Xeon fits 1,750 million transistors into a 122 mm² die. The Ryzen is denser and more power-efficient on paper, with a 65 W TDP against the Xeon’s 80 W TDP.

Cache configurations also differ meaningfully. Both have 64 KB of L1 cache per core, but the Ryzen doubles the L2 cache to 512 KB per core versus the Xeon’s 256 KB per core. The L3 cache is twice as large on the Ryzen: 16 MB shared versus 8 MB shared on the Xeon. This larger cache hierarchy likely contributes to the Ryzen’s strong single-threaded showing, as more data can reside closer to the cores.

Memory support shows another divergence. Both support DDR4 and use a dual-channel memory bus, but the Ryzen has a listed memory bandwidth of 51.2 GB/s, while the Xeon’s bandwidth is not recorded in the database. The Xeon supports ECC memory, which is typical for its server and workstation market segment, while the Ryzen does not. PCIe capabilities also differ: the Ryzen offers Gen 4 with 16 lanes from the CPU, while the Xeon offers Gen 3 with 16 lanes. The Ryzen’s newer PCIe standard allows for faster peripheral communication, assuming compatible hardware.

The Ryzen 3 3100 has an unlocked multiplier, making it overclockable, while the Xeon E3-1280 v5 is locked. The Ryzen is still in active production, whereas the Xeon is end-of-life. Release dates underscore the generational gap: the Ryzen launched in April 2020, while the Xeon launched in October 2015. Nearly five years of architectural progress separate these two parts, and the benchmark data reflects that gap.

Head-to-Head Benchmarks

The database records two direct comparisons, both from Cinebench R15. In the multi-core test, the AMD Ryzen 3 3100 scores 991, while the Intel Xeon E3-1280 v5 scores 707. That is a 40.2% advantage for the Ryzen. This is a substantial lead in a test that stresses all cores and threads simultaneously. The Ryzen’s 4 cores and 8 threads match the Xeon’s configuration, so the performance difference comes down to architectural efficiency, clock speeds, and cache. The Ryzen boosts to 3.90 GHz, while the Xeon boosts to 4.00 GHz, so the Xeon actually has a slight clock advantage on paper. Despite that, the Ryzen wins by a wide margin, indicating that Zen 2’s instructions-per-clock (IPC) advantage over Skylake is decisive.

The single-core Cinebench R15 test is even more lopsided. The Ryzen scores 178, while the Xeon scores 99. That is a 79.8% delta. A nearly 80% single-threaded lead is remarkable, especially considering the Xeon has a higher boost clock. This result suggests the Ryzen’s newer architecture is far more efficient at executing single-threaded workloads, likely due to better branch prediction, wider execution units, and the larger L2 and L3 caches. The Xeon’s 99-point score looks particularly low compared to its multi-core result, hinting that Skylake’s single-thread performance has aged poorly relative to modern designs.

It is importantly the Xeon has additional recorded scores in Cinebench R20 and R23 that the Ryzen does not share. The Xeon’s R20 multi-core score is 2946, and its R23 multi-core score is 7015. Without matching Ryzen data, these cannot be directly compared, but they do show the Xeon operating in a similar performance envelope to its R15 results. The overall database average, which includes these extra tests, still ranks the Ryzen slightly higher: 2055 versus 2029.

FAQ

Q: Which processor has the higher single-core performance?

A: The AMD Ryzen 3 3100 wins the Cinebench R15 single-core test with a score of 178, compared to the Intel Xeon E3-1280 v5’s 99. That is a 79.8% advantage for the Ryzen.

Q: How do the two compare in multi-core workloads?

A: In Cinebench R15 multi-core, the Ryzen 3 3100 scores 991, while the Xeon E3-1280 v5 scores 707. The Ryzen leads by 40.2%.

Q: Do both processors have the same core and thread counts?

A: Yes, both have 4 cores and 8 threads. Any performance differences come from architecture, cache, and clock behavior rather than core count.

Q: Which processor supports ECC memory?

A: The Intel Xeon E3-1280 v5 supports ECC memory, while the AMD Ryzen 3 3100 does not. This makes the Xeon more suitable for workstation or server environments where memory error correction is required.

Q: What are the process nodes for each chip?

A: The Ryzen 3 3100 uses a 7 nm process from TSMC, while the Xeon E3-1280 v5 uses Intel’s 14 nm process. The Ryzen also has a larger cache: 16 MB L3 versus 8 MB L3 on the Xeon.

Q: Which chip is still in production?

A: The AMD Ryzen 3 3100 is listed as active in production, while the Intel Xeon E3-1280 v5 is end-of-life. The Ryzen also has an unlocked multiplier for overclocking, whereas the Xeon is locked.

Specification Differences

The two processors differ across several key specification fields. The Ryzen 3 3100 has a base clock of 3.60 GHz and a boost clock of 3.90 GHz, while the Xeon E3-1280 v5 has a base clock of 3.70 GHz and a boost clock of 4.00 GHz. The Xeon runs slightly faster on paper, but the benchmark results show the Ryzen outperforming it regardless.

The process node is a major split: 7 nm for the Ryzen versus 14 nm for the Xeon. Transistor counts differ as well: 3,800 million for the Ryzen versus 1,750 million for the Xeon. Die sizes are 74 mm² for the Ryzen and 122 mm² for the Xeon, meaning the Ryzen is both smaller and denser. The TDP is lower on the Ryzen at 65 W versus 80 W on the Xeon.

Cache hierarchies differ in L2 and L3. The Ryzen has 512 KB L2 per core and 16 MB shared L3, while the Xeon has 256 KB L2 per core and 8 MB shared L3. L1 is identical at 64 KB per core. Memory bandwidth is listed for the Ryzen at 51.2 GB/s, but no value is recorded for the Xeon. ECC support goes to the Xeon only. PCIe generation differs: Gen 4 on the Ryzen versus Gen 3 on the Xeon, both with 16 CPU lanes.

The socket and platform are entirely different. The Ryzen uses AMD Socket AM4, while the Xeon uses Intel Socket 1151. The Ryzen is a desktop part with an unlocked multiplier, while the Xeon is a server or workstation part with a locked multiplier. Production status, release date, and launch MSRP also differ: the Ryzen was released in April 2020 with a launch MSRP of $99, while the Xeon was released in October 2015 with a launch MSRP of $612.

The Verdict

The data points to a straightforward conclusion: the AMD Ryzen 3 3100 is the faster processor in every measured comparison. It wins the Cinebench R15 multi-core test by 40.2% and the single-core test by 79.8%. Its average benchmark score of 2055 edges out the Xeon’s 2029, and its 46th percentile ranking versus the Xeon’s 45th percentile confirms the overall standing. For anyone building a desktop system, the Ryzen 3 3100 offers superior performance, a more modern architecture, lower power consumption, and an unlocked multiplier for additional tuning.

The Intel Xeon E3-1280 v5 still has a niche. Its ECC memory support is the one feature the Ryzen cannot match, which matters for users who need error-correcting memory in a workstation or small server. Its higher base and boost clocks (3.70 GHz and 4.00 GHz) do not translate into benchmark wins, but they do not hurt either. The Xeon is also a 4-core, 8-thread part, so it can handle multi-threaded workloads adequately, just not as quickly as the Ryzen.

However, the Xeon’s end-of-life status, older 14 nm process, smaller cache, and locked multiplier make it a difficult recommendation for new builds. The Ryzen 3 3100 is active, overclockable, and demonstrably faster in the shared tests. The only reason to choose the Xeon E3-1280 v5 is the ECC memory requirement. For all other use cases, the benchmark data shows the Ryzen 3 3100 as the clear winner.