Intel Xeon E3-1270 v5 vs Intel Xeon W-2123 Comparison

Head-to-Head Benchmarks

The benchmark results show a consistent, albeit narrow, victory for the Intel Xeon W-2123 across every recorded Cinebench test. The data records six wins for the W-2123 and zero for the E3-1270 v5, with all deltas falling in a tight band between 1.4% and 2.0%. This is not a lopsided contest, but it is a uniform one.

In Cinebench R15 multicore, the W-2123 scores 724 against 713 for the E3-1270 v5, a 1.5% advantage. The single-core R15 result shows the W-2123 at 102 versus 100, a 2% lead, the largest margin of any test in the suite. Moving to R20, the multicore gap remains at 1.5% (3019 vs 2974), while single-core narrows slightly to 1.4% (425 vs 419). The R23 results repeat the pattern: multicore 7189 vs 7082 (1.5%), single-core 1014 vs 999 (1.5%).

What does this mean in practical terms? The W-2123 is the faster chip in every rendering workload measured, but the differences are small enough that most workloads would not show a perceptible wall-clock difference. A 1.5% multicore margin in R23 translates to roughly one extra frame or a fraction of a second in a long render. The consistent direction of the wins, however, indicates the W-2123 holds a structural edge in both single-threaded and multi-threaded execution, not just a favorable outlier in one test.

The average benchmark score tells a similar story. The W-2123 averages 2079 across its recorded benchmark suite, while the E3-1270 v5 averages 2048. That is a raw difference of 31 points, about 1.5%. Both chips sit at the 46th percentile among all CPUs in the database, meaning they occupy the same performance tier relative to the broader market.

Looking at the nearest rivals for context, the W-2123's 2079 average sits nearly level with the Intel Core i3-9350KF (2082, a 0.1% difference) and the AMD Ryzen Embedded R2544 (2086, a 0.3% difference). It edges out the Intel Xeon E5-2628 v3 (2076, a 0.1% difference) and the Intel Xeon E3-1585 v5 (2067, a 0.6% difference). The E3-1270 v5's 2048 average matches the Intel Core i7-7820HK exactly (0% delta), sits 0.1% above the AMD Ryzen 5 7520U (2046), 0.2% above the Intel Xeon E3-1275 v5 (2043), and trails the AMD Ryzen 3 3100 (2055) by 0.3%. In short, both processors are mid-pack performers surrounded by similar-spec rivals.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Xeon E3-1270 v5 boosts to 4.00 GHz, while the Intel Xeon W-2123 boosts to 3.90 GHz. Despite the E3-1270 v5's 0.10 GHz advantage, the W-2123 wins every single-core benchmark in the recorded data.

Q: Do both processors support ECC memory?

A: Yes, both the Intel Xeon W-2123 and the Intel Xeon E3-1270 v5 support ECC memory.

Q: Which processor has more PCIe lanes?

A: The Intel Xeon W-2123 has 48 PCIe Gen 3 lanes (CPU only), while the Intel Xeon E3-1270 v5 has 16 PCIe Gen 3 lanes (CPU only). This is a major platform-level difference.

Q: Are these processors the same architecture?

A: Both use the Skylake architecture and are built on Intel's 14 nm process node. However, the W-2123 is from the Skylake-W generation (codename Skylake-W), while the E3-1270 v5 is from the Skylake-DT generation (codename Skylake-DT).

Q: What is the memory bandwidth difference?

A: The Intel Xeon W-2123 supports quad-channel DDR4 memory with a bandwidth of 85.3 GB/s. The Intel Xeon E3-1270 v5 supports dual-channel DDR3 and DDR4 memory with a bandwidth of 34.1 GB/s. The W-2123 has roughly 2.5 times the memory bandwidth on paper.

Q: Which processor has a larger L3 cache?

A: The Intel Xeon W-2123 has 8.25 MB of shared L3 cache, while the Intel Xeon E3-1270 v5 has 8 MB of shared L3 cache. The difference is small, 0.25 MB.

Architecture Differences

Both processors share the Skylake microarchitecture and the 14 nm process node from Intel, but they diverge significantly in platform design. The W-2123 belongs to the Skylake-W generation, targeting the Intel Socket 2066 platform. The E3-1270 v5 belongs to the Skylake-DT generation, targeting the Intel Socket 1151 platform. This socket difference dictates nearly every other architectural distinction.

The memory subsystem is the most consequential difference. The W-2123 uses a quad-channel memory bus with DDR4 support and a recorded bandwidth of 85.3 GB/s. The E3-1270 v5 uses a dual-channel memory bus, supports both DDR3 and DDR4, and records a bandwidth of 34.1 GB/s. In memory-heavy workloads, the W-2123's wider bus provides a substantial theoretical advantage, even if the Cinebench scores do not isolate this effect.

Cache geometry also differs. Both processors allocate 64 KB of L1 cache per core, but the L2 allocation diverges: the W-2123 has 1 MB of L2 per core, while the E3-1270 v5 has 256 KB per core. That is a fourfold difference in per-core L2 capacity. The shared L3 cache is nearly identical, 8.25 MB on the W-2123 versus 8 MB on the E3-1270 v5.

The PCIe implementation is another major architectural split. The W-2123 offers 48 PCIe Gen 3 lanes (CPU only), making it suitable for high-bandwidth expansion like multiple GPUs or NVMe storage. The E3-1270 v5 offers 16 PCIe Gen 3 lanes (CPU only), a typical single-slot configuration. The die size reflects this platform gap: the W-2123 measures 484 mm², while the E3-1270 v5 measures 122 mm². The transistor count for the E3-1270 v5 is recorded at 1,750 million; the W-2123's transistor count is not recorded in the database.

Specification Differences

The two processors differ in several recorded specifications. The W-2123 has a base clock of 3.60 GHz and a boost clock of 3.90 GHz. The E3-1270 v5 also has a base clock of 3.60 GHz but boosts to 4.00 GHz. Thermal design power differs substantially: the W-2123 is rated at 120 W, while the E3-1270 v5 is rated at 80 W.

Socket and platform are different, as noted: the W-2123 uses Intel Socket 2066, the E3-1270 v5 uses Intel Socket 1151. Memory support differs: the W-2123 supports DDR4 only with a quad-channel bus, while the E3-1270 v5 supports both DDR3 and DDR4 with a dual-channel bus. Recorded memory bandwidth is 85.3 GB/s for the W-2123 versus 34.1 GB/s for the E3-1270 v5. PCIe lane counts differ: 48 lanes on the W-2123 versus 16 on the E3-1270 v5.

The cache configuration differs in L2 size per core: 1 MB on the W-2123 versus 256 KB on the E3-1270 v5. L3 cache is 8.25 MB on the W-2123 versus 8 MB on the E3-1270 v5. The process node is the same (14 nm), and both are end-of-life products from Intel's Server/Workstation market segment. Neither has integrated graphics, and neither has an unlocked multiplier. The release dates differ: the W-2123 launched in August 2017, the E3-1270 v5 in October 2015.

The Verdict

The benchmark data points to the Intel Xeon W-2123 as the faster processor in every measured test. It wins all six head-to-head Cinebench comparisons, with margins ranging from 1.4% to 2.0%. The average benchmark score favors it as well: 2079 versus 2048. If the decision rests purely on raw rendering performance, the W-2123 is the correct choice.

But the E3-1270 v5 has its own arguments. It boosts higher (4.00 GHz vs 3.90 GHz), runs at a lower TDP (80 W vs 120 W), and fits the more common Socket 1151 platform. The recorded data does not show this boost advantage translating into a single-core win, but the lower power draw and smaller die (122 mm² vs 484 mm²) could matter in dense server environments where cooling and power budgets are tight.

The platform decision is the real fork in the road. The W-2123's quad-channel memory, 48 PCIe lanes, and much larger memory bandwidth make it the more capable foundation for a workstation with heavy I/O or expansion needs. The E3-1270 v5's dual-channel bus and 16 PCIe lanes are sufficient for a simpler build but limit headroom. Neither chip is a performance outlier: both sit at the 46th percentile among all CPUs.

Where Each One Wins

Intel Xeon W-2123 wins on: all recorded Cinebench benchmarks, including multicore and single-core tests in R15, R20, and R23. It also wins on memory bandwidth (85.3 GB/s vs 34.1 GB/s), PCIe lane count (48 vs 16), L2 cache per core (1 MB vs 256 KB), and L3 cache size (8.25 MB vs 8 MB). Its quad-channel memory bus and larger die suggest it is built for heavier workstation workloads, even though the benchmark margins over the E3-1270 v5 are modest.

Intel Xeon E3-1270 v5 wins on: boost clock (4.00 GHz vs 3.90 GHz) and thermal design power (80 W vs 120 W). It also supports both DDR3 and DDR4 memory, offering broader memory compatibility than the W-2123's DDR4-only support. Its smaller die size and lower TDP make it a more power-efficient option in constrained environments. The Socket 1151 platform is more widely used, which could simplify motherboard availability.

For a builder prioritizing rendering throughput and platform expansion, the W-2123 is the pick. For a builder prioritizing power efficiency and memory flexibility, the E3-1270 v5 holds its ground. The recorded data does not show a large performance gap, so the decision should hinge on platform requirements rather than the 1.5% average score difference.