AMD Ryzen 7 5825C vs Intel Xeon W-2135 Comparison

The benchmark data presents a clear and consistent picture: the AMD Ryzen 7 5825C outperforms the Intel Xeon W-2135 in every single head-to-head test recorded. This is a decisive sweep, with the AMD part winning all six comparisons across the Cinebench R15, R20, and R23 suites. The margins are narrow, but they are uniform, indicating a fundamental performance advantage rather than a workload-specific outlier.

Head-to-Head Benchmarks

The most striking aspect of the head-to-head data is the absence of a single win for the Intel Xeon W-2135. In Cinebench R15, the AMD Ryzen 7 5825C scores 1247 in the multi-core test, edging out the Xeon's 1230 by a 1.4% margin. The single-core R15 test shows a similar pattern, with the AMD part scoring 175 versus 173, a 1.2% lead.

Moving to the R20 suite, the results remain consistent. The AMD Ryzen 7 5825C scores 5197 in multi-core, compared to the Xeon W-2135's 5126, again a 1.4% difference. The single-core R20 results are 733 for the AMD chip and 723 for the Intel chip, translating to a 1.4% advantage. The R23 benchmarks continue this trend, with the AMD part scoring 12376 versus 12205 in multi-core (1.4% delta) and 1747 versus 1723 in single-core (1.4% delta).

The uniformity of the deltaPct values is noteworthy. Every multi-core test and every single-core test shows a 1.4% or 1.2% difference. This suggests a clock-for-clock efficiency advantage for the AMD architecture, as the boost clocks for both processors are identical at 4.50 GHz. The AMD Ryzen 7 5825C's lead is small but absolute, meaning users can expect a slight but consistent performance edge across all Cinebench workloads.

Where Each One Wins

Based strictly on the benchmark results, the AMD Ryzen 7 5825C wins in every measured category. There is no workload in the Cinebench suite where the Intel Xeon W-2135 comes out ahead. The AMD processor holds a 1.4% lead in multi-core performance in R15, R20, and R23, which suggests it handles parallel workloads slightly better. This is despite having fewer physical cores than the Xeon, a point that will be explored in the architecture section.

For single-core tasks, the AMD chip also holds a consistent advantage. The lead is 1.2% in R15 and 1.4% in R20 and R23. This indicates that for lightly-threaded applications, the Ryzen 7 5825C is the more responsive part. The data does not show any scenario where the Xeon W-2135's higher base clock of 3.70 GHz (versus 2.00 GHz for the AMD) provides a benefit in the recorded tests, as both parts boost to the same 4.50 GHz ceiling.

The Intel Xeon W-2135 does not win any of the six recorded benchmarks. Its performance is close, but it is consistently behind. For users looking at raw Cinebench scores, the AMD Ryzen 7 5825C is the clear choice, offering a small but measurable performance advantage in every test.

Architecture Differences

The two processors are built on fundamentally different architectures. The AMD Ryzen 7 5825C uses the Zen 3 architecture, on the Cezanne-U codename, and is fabricated on a 7 nm process at TSMC. The Intel Xeon W-2135 uses the Skylake architecture, specifically Skylake-W, and is built on a 14 nm process at Intel. This process node difference is significant, as the 7 nm node allows for higher transistor density and efficiency.

The AMD chip packs 8 cores and 16 threads, while the Intel part offers 6 cores and 12 threads. Despite having two fewer cores, the Xeon W-2135 is able to stay within 1.4% of the AMD chip in multi-core tests, which highlights the impact of its higher base clock. The AMD Ryzen 7 5825C has a base clock of 2.00 GHz, while the Xeon W-2135 has a base clock of 3.70 GHz; both boost to 4.50 GHz.

Cache layouts also differ substantially. The AMD Ryzen 7 5825C has 64 KB of L1 cache per core, 512 KB of L2 cache per core, and a 16 MB shared L3 cache. The Intel Xeon W-2135 has 64 KB of L1 cache per core, but 1 MB of L2 cache per core, and a smaller 8.25 MB shared L3 cache. The AMD part's larger L3 cache is likely a factor in its single-core performance advantage.

The AMD chip includes integrated Radeon Vega 8 graphics, whereas the Intel Xeon W-2135 has no integrated graphics. The Intel part does support ECC memory, a feature absent from the AMD mobile processor. The production status also differs, with the AMD part listed as "Active" and the Intel part as "End-of-life".

Specification Differences

The specification sheet reveals stark contrasts between these two processors. The most dramatic difference is in TDP: the AMD Ryzen 7 5825C is rated at 15 watts, while the Intel Xeon W-2135 is rated at 140 watts. This is a 125-watt gap, making the AMD processor extraordinarily more power-efficient on paper.

Memory support also differs. Both support DDR4, but the AMD Ryzen 7 5825C uses a dual-channel memory bus with a bandwidth of 51.2 GB/s. The Intel Xeon W-2135 uses a quad-channel bus, offering a higher bandwidth of 85.3 GB/s. The Intel part also supports ECC memory, which the AMD chip does not.

PCIe capabilities are another differentiator. The AMD Ryzen 7 5825C provides Gen 3 with 8 lanes, while the Intel Xeon W-2135 provides Gen 3 with 48 lanes. This makes the Xeon far more expandable for workstation tasks. The sockets are incompatible, with the AMD part using AMD Socket FP6 and the Intel part using Intel Socket 2066.

The market segments tell the story of their intended use: the AMD Ryzen 7 5825C is a mobile processor, while the Intel Xeon W-2135 is a server/workstation part. The Intel chip has a launch MSRP of $835, while the AMD chip has no recorded launch MSRP. The AMD part has a process node of 7 nm and a die size of 180 mm², while the Intel part is on 14 nm with a die size of 484 mm².

FAQ

Q: Which processor has more cores?

A: The AMD Ryzen 7 5825C has 8 cores and 16 threads, while the Intel Xeon W-2135 has 6 cores and 12 threads.

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

A: The AMD Ryzen 7 5825C scores 12376, which is 1.4% higher than the Intel Xeon W-2135's score of 12205.

Q: Does the Intel Xeon W-2135 support ECC memory?

A: Yes, the Intel Xeon W-2135 has ECC memory support, a feature not found on the AMD Ryzen 7 5825C.

Q: Which processor has a higher TDP?

A: The Intel Xeon W-2135 has a TDP of 140 watts, compared to the AMD Ryzen 7 5825C's 15 watts.

Q: Are the benchmark scores close between the two?

A: Yes, the AMD Ryzen 7 5825C wins all six recorded benchmarks, but the margin is consistently narrow, with deltaPct values of 1.4% in most tests and 1.2% in the Cinebench R15 single-core test.

Q: What is the memory bandwidth of each processor?

A: The AMD Ryzen 7 5825C has a dual-channel memory bus with 51.2 GB/s bandwidth, while the Intel Xeon W-2135 has a quad-channel bus with 85.3 GB/s bandwidth.

The Verdict

The data is unambiguous: the AMD Ryzen 7 5825C wins every benchmark in the head-to-head comparison. Users seeking the highest Cinebench scores should choose the AMD part, as it leads in all six tests, albeit by a small margin. The AMD chip's 8 cores and 16 threads provide a slight edge in multi-core workloads, while its architecture also gives it a lead in single-core tests.

However, the Intel Xeon W-2135 should not be dismissed, despite its 0-6 loss record. Its quad-channel memory bus with 85.3 GB/s bandwidth and 48 PCIe Gen 3 lanes make it a vastly more capable platform for workstation expansion. The support for ECC memory is a critical feature for data integrity in server environments. The Intel part also has a higher base clock of 3.70 GHz, which could be beneficial in scenarios not captured by the Cinebench suite.

The choice ultimately depends on the user's priorities. For a mobile, power-efficient system that maximizes Cinebench performance, the AMD Ryzen 7 5825C is the clear winner. For a workstation requiring extensive memory bandwidth, PCIe expansion, and ECC support, the Intel Xeon W-2135 offers platform features that the AMD part lacks. The data shows the AMD chip is faster in the tested workloads, but the Intel chip is built for a different class of system.