Intel Xeon D-1531 vs Intel Xeon E3-1270L v4 Comparison

The Intel Xeon D-1531 and Intel Xeon E3-1270L v4 are two Broadwell-era server processors that, on paper, look like very different chips—one is a 6-core SoC on a BGA package, the other a 4-core LGA socket part—yet their benchmark results are nearly identical. The data shows a 6-0 sweep in the head-to-head for the D-1531, but the actual score deltas are so small (0.0% to 0.3%) that they are functionally equivalent in Cinebench workloads. This makes the choice between them a matter of platform, memory support, and physical integration rather than raw performance.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Xeon D-1531 has 6 cores and 12 threads, while the Intel Xeon E3-1270L v4 has 4 cores and 8 threads.

Q: How do their single-core benchmark scores compare?

A: In Cinebench R23 single-core, the D-1531 scores 920, and the E3-1270L v4 scores 919, a difference of 0.1% in favor of the D-1531. The R20 single-core test shows a similar 0.3% lead for the D-1531 (386 vs 385).

Q: What is the difference in their memory support?

A: The D-1531 supports both DDR3 and DDR4 memory in a dual-channel configuration, whereas the E3-1270L v4 supports only DDR3 and has a listed memory bandwidth of 29.9 GB/s.

Q: Which processor has a lower TDP?

A: The Intel Xeon D-1531 has a TDP of 35 watts, which is lower than the E3-1270L v4's 45-watt TDP.

Q: Are these CPUs unlocked for overclocking?

A: No. Both the D-1531 and the E3-1270L v4 have their multipliers locked (multiplierUnlocked: false).

Q: How does the D-1531's launch MSRP compare to the E3-1270L v4?

A: The D-1531 has a launch MSRP of $348. The FACT PACK does not list a launch MSRP for the E3-1270L v4.

Architecture Differences

Both processors are built on Intel's 14 nm process node and share the Broadwell microarchitecture, but they belong to different sub-families. The D-1531 is part of the Xeon D (Broadwell-DE) generation, designed as a system-on-chip for dense, low-power networking and edge devices. The E3-1270L v4 is from the Xeon E3 (Broadwell-DT) line, a more traditional server CPU for socketed motherboards.

The core counts differ significantly: the D-1531 packs 6 cores and 12 threads, while the E3-1270L v4 offers 4 cores and 8 threads. This gives the D-1531 a theoretical multi-threading advantage, which is confirmed by its slightly higher multi-core scores. Clock speeds tell the opposite story: the E3-1270L v4 runs at a 3.00 GHz base and 3.60 GHz boost, compared to the D-1531's 2.20 GHz base and 2.70 GHz boost. The higher clocks help the E3-1270L v4 nearly match the D-1531 in single-core tests despite having fewer cores.

Cache layouts also differ. The D-1531 uses a per-core L3 design of 1.5 MB per core, while the E3-1270L v4 uses a shared 6 MB L3 pool. Both have 64 KB of L1 and 256 KB of L2 per core. The D-1531 has a larger die size at 246 mm² with 3,200 million transistors, while the E3-1270L v4 has a smaller 182 mm² die; the FACT PACK does not list a transistor count for the latter.

Platform support is a major divider. The D-1531 uses the Intel BGA 1667 socket, meaning it is soldered to the board, and offers 24 PCIe Gen 3 lanes. The E3-1270L v4 uses the Intel Socket 1150, a standard LGA mounting, and provides 16 PCIe Gen 3 lanes. Both support ECC memory, but the D-1531's DDR3/DDR4 flexibility contrasts with the E3-1270L v4's DDR3-only limitation.

The Verdict

Pick the Intel Xeon D-1531 if your priority is a low-power, integrated platform. Its 35-watt TDP is 10 watts lower than the E3-1270L v4's 45-watt TDP, and its BGA 1667 socket suggests a compact, soldered-on-board design typical of embedded or networking applications. The D-1531 also wins every head-to-head benchmark, albeit by margins of 0.0% to 0.3%, and offers DDR4 memory support plus 24 PCIe lanes for more I/O flexibility.

Pick the Intel Xeon E3-1270L v4 if you need a socketed, serviceable CPU for a standard LGA 1150 motherboard. Its higher base and boost clocks (3.00/3.60 GHz vs 2.20/2.70 GHz) make it the better choice for lightly threaded tasks that rely on raw clock speed, even though the benchmark data shows the D-1531 edging it out in single-core Cinebench runs. The E3-1270L v4 also has a smaller die size (182 mm² vs 246 mm²), which may matter for manufacturing economics, but its DDR3-only memory support is a limitation.

The data shows these are effectively equal in performance. The D-1531's 6-0 head-to-head sweep is technically a win, but deltas of 0.1% and 0.3% are within run-to-run noise. The choice comes down to platform: BGA vs LGA, DDR4 vs DDR3, 24 vs 16 PCIe lanes. For a new build, the D-1531's modern memory and I/O are compelling. For an upgrade to an existing LGA 1150 system, the E3-1270L v4 is the natural fit.

Specification Differences

The core configuration is the most obvious difference: the D-1531 has 6 cores and 12 threads, while the E3-1270L v4 has 4 cores and 8 threads. Clock speeds favor the E3-1270L v4, with a 3.00 GHz base and 3.60 GHz boost versus the D-1531's 2.20 GHz base and 2.70 GHz boost. TDP also differs: 35 watts for the D-1531, 45 watts for the E3-1270L v4.

The sockets are incompatible: the D-1531 uses Intel BGA 1667, and the E3-1270L v4 uses Intel Socket 1150. Memory support is a key differentiator—the D-1531 accepts both DDR3 and DDR4, while the E3-1270L v4 is limited to DDR3. The E3-1270L v4 has a listed memory bandwidth of 29.9 GB/s; the D-1531's bandwidth is not specified in the FACT PACK. PCIe lane counts differ as well: 24 lanes for the D-1531 versus 16 lanes for the E3-1270L v4, both Gen 3.

Cache topology varies: the D-1531 has 1.5 MB of L3 per core, whereas the E3-1270L v4 has a shared 6 MB L3 cache. Die size is 246 mm² for the D-1531 and 182 mm² for the E3-1270L v4. The D-1531 has a listed transistor count of 3,200 million; none is listed for the E3-1270L v4. The D-1531's release date is 2015-10-31, while the E3-1270L v4's is 2015-06-01. The D-1531 has a launch MSRP of $348; the E3-1270L v4 has no listed MSRP. Both are locked multipliers and lack integrated graphics.

Head-to-Head Benchmarks

The head-to-head results are remarkably close, with the D-1531 winning all six Cinebench tests. In Cinebench R15 multicore, both CPUs score exactly 656, a 0.0% delta. The R15 single-core test is also a tie at 92 points each. These are the only two tests with a perfect dead heat.

The R20 multicore test shows the D-1531 ahead at 2737 versus 2735, a 0.1% margin. The R20 single-core test gives the D-1531 a 386 to 385 win, a 0.3% delta—the largest gap in the entire comparison. In R23 multicore, the D-1531 scores 6517 against 6512, another 0.1% lead. The R23 single-core test is again a 0.1% difference, with 920 for the D-1531 and 919 for the E3-1270L v4.

The pattern is clear: the D-1531's extra two cores and four threads provide a slight multi-core edge, while its lower clocks are almost exactly compensated by the E3-1270L v4's higher frequency in single-core tests. The E3-1270L v4 never wins a single test. However, the maximum delta of 0.3% is so small that these chips are effectively interchangeable for Cinebench workloads. The average benchmark scores confirm this: the D-1531 averages 1885, and the E3-1270L v4 averages 1883, a 0.1% difference. Both sit at the 43rd percentile among all CPUs, and each lists the other as a nearest rival with deltas of 0.1% or -0.1%.

Where Each One Wins

The D-1531 wins on multi-threaded performance by a hair. In Cinebench R15, R20, and R23 multicore tests, it scores 0.0% to 0.1% higher than the E3-1270L v4. This makes it the marginally better choice for workloads that scale with core count, such as virtualization with many light VMs or software-defined networking, where its 6 cores and 12 threads provide a slight throughput advantage over the E3-1270L v4's 4 cores and 8 threads. The D-1531 also wins on platform features: DDR4 memory support, 24 PCIe lanes versus 16, and a 35-watt TDP that is 22% lower than the E3-1270L v4's 45-watt TDP. For embedded or edge deployments where power draw and I/O density matter more than raw clock speed, the D-1531 is the clear pick.

The E3-1270L v4 wins on clock speed and socket compatibility. Its 3.00 GHz base and 3.60 GHz boost clocks are significantly higher than the D-1531's 2.20/2.70 GHz, which helps it nearly tie in single-core benchmarks despite the D-1531's official wins. In real-world single-threaded tasks—like legacy application servers or lightly threaded database queries—the higher frequency should translate to lower latency, even if Cinebench shows a 0.1% delta. The LGA 1150 socket makes it a drop-in upgrade for existing motherboards, whereas the D-1531's BGA 1667 requires a dedicated board design. The E3-1270L v4 also has a smaller die size (182 mm² vs 246 mm²) and a shared 6 MB L3 cache, which may offer better cache locality for certain single-threaded access patterns. Its 45-watt TDP is higher, but still within the range of a capable air cooler.

In summary, the D-1531 wins the benchmark sweep and the platform war, while the E3-1270L v4 wins on frequency and serviceability. The data shows no meaningful performance gap between them, so your decision should hinge on which socket and memory type you can support.