CPU Comparison

The Intel Xeon E-2314 and the Intel Xeon E3-1575M v5 are two server-class processors separated by five years of platform evolution, yet they deliver nearly identical benchmark results. Both are 4-core Xeon parts aimed at workstations, but the E-2314 is a socketed Rocket Lake-E chip for modern Socket 1200 boards, while the E3-1575M v5 is a soldered Skylake-H mobile part in BGA 1440 form. Their average benchmark scores sit at 1911 and 1910 respectively, placing both in the 43rd percentile of all CPUs. The data reveals a near-parity matchup where architectural differences matter more than raw performance.

Where Each One Wins

The Intel Xeon E-2314 wins every single head-to-head benchmark in the Cinebench suite. It takes the R15 multicore test with a score of 666 against 665, a 0.2% lead. It edges out the R15 singlecore test at 93 points versus 93, though this is a tie with zero delta. In R20 multicore, the E-2314 scores 2775 against 2774, and in R20 singlecore both hit 391. The R23 multicore test shows 6609 for the E-2314 versus 6607, and R23 singlecore is 933 against 932, a 0.1% margin. Across all six tests, the E-2314 claims the win, but the largest delta is a mere 0.2%, making these effectively identical in compute throughput.

The Intel Xeon E3-1575M v5 wins in no benchmark category. However, its advantage lies outside the Cinebench suite. It includes integrated Iris Pro Graphics P580, whereas the E-2314 has no integrated graphics, requiring a discrete GPU for display output. The E3-1575M v5 also supports both DDR3 and DDR4 memory, whereas the E-2314 is limited to DDR4 only. The older chip’s 45 W TDP is lower than the E-2314’s 65 W, making it more power-efficient on paper, though the E-2314’s platform uses a larger die (276 mm² vs 171 mm²) and newer PCIe Gen 4 support versus the E3-1575M v5’s PCIe Gen 3.

The E-2314 wins on platform modernity: it has 20 CPU PCIe lanes at Gen 4 speeds and a dual-channel memory bus delivering 51.2 GB/s, compared to the E3-1575M v5’s 16 lanes at Gen 3 and 34.1 GB/s memory bandwidth. The E-2314 also has a higher boost clock at 4.50 GHz versus 3.90 GHz, and a newer release date of September 2021 versus January 2016. The E3-1575M v5 counters with 8 threads versus 4, achieved through Hyper-Threading, and a higher base clock of 3.00 GHz versus 2.80 GHz.

The Verdict

The benchmark data shows a statistical dead heat. The E-2314 wins all six Cinebench tests, but the largest margin is 0.2%, which falls within normal run-to-run variance. The average scores, 1911 for the E-2314 and 1910 for the E3-1575M v5, differ by a single point. Both CPUs sit at the 43rd percentile of all processors, and the nearest rival data confirms this: the AMD Ryzen 5 PRO 2400GE matches the E3-1575M v5 at 1910 with 0% delta, while the E-2314 leads the E3-1285 v4 by 0.2% and the E5-2620 v3 by 0.2%.

For users choosing between them, the decision rests entirely on platform and feature requirements. The E-2314 is the correct pick for anyone building a Socket 1200 system with PCIe Gen 4 devices, faster memory bandwidth, and a higher boost clock. It is also the only one still in active production, while the E3-1575M v5 is end-of-life. The E3-1575M v5 makes sense only for those who need its integrated graphics or can leverage its lower 45 W TDP in a compact, soldered BGA form factor, or who require DDR3 memory compatibility. The E-2314’s 4.50 GHz boost clock gives it a theoretical single-thread advantage, confirmed by its 933 R23 singlecore score versus 932, but the practical difference is negligible.

The production status is decisive: the E-2314 remains active, while the E3-1575M v5 is end-of-life. For any new design, the E-2314 is the rational choice. For legacy systems or applications needing integrated graphics, the E3-1575M v5 remains a functional, if obsolete, option. Neither chip offers a meaningful performance edge, so socket and feature compatibility should drive the purchase.

Head-to-Head Benchmarks

The six Cinebench results paint a picture of engineered parity. The R15 multicore test shows the E-2314 at 666 points against the E3-1575M v5’s 665, a 0.2% lead that is the largest delta of the entire comparison. This is notable because the E3-1575M v5 has 8 threads versus the E-2314’s 4, yet still loses by a hair, suggesting the E-2314’s higher boost clock compensates for its lack of Hyper-Threading. The R15 singlecore test is a perfect tie at 93 points each, with a 0% delta.

Moving to R20, the multicore result is 2775 versus 2774, a single-point difference that rounds to 0% delta. The singlecore test is another exact tie at 391 points. The R23 multicore test shows 6609 for the E-2314 and 6607 for the E3-1575M v5, a 0% delta after rounding, while the R23 singlecore test gives 933 versus 932, a 0.1% advantage for the E-2314. Across all three Cinebench versions, the E-2314’s singlecore scores are consistently 0 to 1 point higher, while its multicore scores are 1 to 2 points higher.

The pattern suggests that the E-2314’s architectural advantages, Rocket Lake-E versus Skylake, 512 KB per-core L2 cache versus 256 KB, and a 4.50 GHz boost versus 3.90 GHz, are just enough to offset the E3-1575M v5’s two extra threads. The E3-1575M v5 has 2,300 million transistors on a 171 mm² die, while the E-2314’s transistor count is not listed but its die is 276 mm². The E-2314 also has larger per-core L1 cache at 80 KB versus 64 KB. These differences manifest as a 0.2% multicore win and a 0.1% singlecore win, but no benchmark exceeds that margin.

FAQ

Q: Which CPU is faster in multi-core workloads?

A: The Intel Xeon E-2314 wins all three multicore tests, but by tiny margins: 666 vs 665 in R15, 2775 vs 2774 in R20, and 6609 vs 6607 in R23. The largest delta is 0.2%.

Q: Does the E3-1575M v5’s extra threads help it in single-core tests?

A: No. The E3-1575M v5 has 8 threads versus 4, but it still loses or ties in every singlecore test. The R15 and R20 singlecore tests are exact ties at 93 and 391, while R23 singlecore is 933 vs 932 in favor of the E-2314.

Q: What is the main performance difference between these two?

A: There is essentially no meaningful performance difference. The average benchmark scores are 1911 for the E-2314 and 1910 for the E3-1575M v5, and both rank in the 43rd percentile of all CPUs. The E-2314 wins all six head-to-head tests, but the maximum delta is 0.2%.

Q: Which CPU has better memory bandwidth?

A: The E-2314 has a memory bandwidth of 51.2 GB/s using dual-channel DDR4, while the E3-1575M v5 has 34.1 GB/s on dual-channel DDR3 or DDR4. The E-2314’s bandwidth is roughly 50% higher.

Q: Does either CPU have integrated graphics?

A: Only the Intel Xeon E3-1575M v5 includes integrated graphics, specifically Iris Pro Graphics P580. The Intel Xeon E-2314 has no integrated graphics, so it requires a discrete GPU.

Q: Are these CPUs still available for purchase?

A: The Intel Xeon E-2314 is listed as active in production, while the Intel Xeon E3-1575M v5 is end-of-life. This means the E-2314 is the only one with ongoing availability for new systems.

Architecture Differences

The two CPUs represent different generations of Intel’s Xeon E3 lineup. The E-2314 is built on Rocket Lake-E architecture using a 14 nm process, while the E3-1575M v5 uses Skylake-H, also on 14 nm. Both are manufactured by Intel, but the E-2314’s die is 276 mm², whereas the E3-1575M v5’s die is 171 mm² with 2,300 million transistors, the E-2314’s transistor count is not specified. The core counts are identical at 4, but the E3-1575M v5 supports 8 threads via Hyper-Threading, while the E-2314 is limited to 4 threads.

Cache hierarchy differs significantly. The E-2314 has 80 KB of L1 cache per core and 512 KB of L2 per core, compared to 64 KB and 256 KB respectively on the E3-1575M v5. Both share 8 MB of L3 cache. The E-2314’s larger L1 and L2 caches help its single-thread performance, which is why it edges out the E3-1575M v5 in singlecore tests despite having fewer threads.

Memory support is another divider. The E-2314 supports only DDR4 on a dual-channel bus with 51.2 GB/s bandwidth. The E3-1575M v5 supports both DDR3 and DDR4, also dual-channel, but tops out at 34.1 GB/s. Both support ECC memory, which is expected for Xeon parts. The E-2314 uses a Socket 1200 interface, while the E3-1575M v5 is soldered to a BGA 1440 package, meaning the latter is not upgradeable.

PCIe capabilities show a generational leap. The E-2314 provides 20 CPU lanes at PCIe Gen 4, while the E3-1575M v5 offers 16 lanes at PCIe Gen 3. This gives the E-2314 double the bandwidth per lane and more total lanes. The E-2314’s boost clock is 4.50 GHz versus 3.90 GHz, but the E3-1575M v5 has a higher base clock at 3.00 GHz versus 2.80 GHz. Thermal design power favors the older chip at 45 W versus 65 W. Neither CPU is multiplier unlocked, and the E-2314 has a launch MSRP of $182, while the E3-1575M v5 had a launch MSRP of $1207. The E-2314 was released on September 7, 2021, with part number SRKN8, while the E3-1575M v5 came out on January 23, 2016, with part number SR2QV. The E3-1575M v5’s integrated Iris Pro Graphics P580 is its only feature absent from the E-2314.