Intel Xeon E-2276M vs Intel Xeon E3-1245 v5 Comparison

Head-to-Head Benchmarks

The head-to-head data is unusual: the older Intel Xeon E3-1245 v5 wins every single recorded benchmark against the Intel Xeon E-2276M. Across six Cinebench tests, the E3-1245 v5 consistently outperforms the E-2276M by roughly 20.8% in each workload. The only slightly different margin appears in Cinebench R23 single-core, where the E3-1245 v5 leads by 20.9%.

Starting with multi-core performance, the E3-1245 v5 scores 687 in Cinebench R15 multicore versus 544 for the E-2276M. That is a 20.8% deficit for the newer chip. The pattern repeats in Cinebench R20 multicore: 2865 versus 2268, again a 20.8% gap. In Cinebench R23 multicore, the E3-1245 v5 reaches 6822 while the E-2276M manages 5400. These are substantial margins for a processor with fewer cores, which suggests that raw core count is not the deciding factor in these tests.

Single-core results tell the same story. In Cinebench R15 single-core, the E3-1245 v5 scores 96 against 76 for the E-2276M, a 20.8% advantage. Cinebench R20 single-core shows 404 versus 320, again a 20.8% lead. The closest margin is in Cinebench R23 single-core, where the E3-1245 v5 posts 963 against 762, a 20.9% difference. In every case, the older Skylake part is decisively ahead.

The average benchmark score in the database confirms this overall picture, though with a smaller gap. The E-2276M has an average benchmark score of 1996, while the E3-1245 v5 sits at 1973. That is only a 1.2% difference in favor of the E-2276M, but the head-to-head Cinebench results are unanimous for the E3-1245 v5. The recorded wins tally is 6 for the E3-1245 v5 and 0 for the E-2276M.

What makes this interesting is that the E-2276M is the newer part with more cores and a higher boost clock. Yet the benchmark data does not reflect those advantages in these specific tests. The E3-1245 v5 wins every comparison by a consistent margin, which points to something other than core count or clock speed driving the results.

Where Each One Wins

Looking strictly at the benchmark wins, the Intel Xeon E3-1245 v5 wins all six recorded head-to-head tests. That makes it the clear choice for any workload represented by Cinebench R15, R20, or R23, whether single-threaded or multi-threaded. If your application relies on Cinebench-style rendering or similar CPU-bound tasks, the data says the E3-1245 v5 is faster by roughly 21%.

The E-2276M, despite having 6 cores and 12 threads versus 4 cores and 8 threads for the E3-1245 v5, does not win a single recorded test. However, the database also shows that the E-2276M has a higher average benchmark score (1996 versus 1973). That average includes tests beyond the Cinebench suite, such as Geekbench, where the E-2276M records 5159 multicore and 1440 single-core. The E3-1245 v5 does not have Geekbench results in the database, so those scores only count toward the E-2276M average.

For practical purposes, the E3-1245 v5 is the winner in every measured head-to-head benchmark. The E-2276M does have a higher boost clock (4.70 GHz versus 3.90 GHz) and more L3 cache (12 MB versus 8 MB), but those specifications do not translate into wins in the recorded tests. The data does not show any scenario where the E-2276M comes out ahead, so if you are choosing based purely on these benchmarks, the E3-1245 v5 is the faster processor.

That said, the E-2276M is not far behind in average score. Its 1996 average is within 1.2% of the E3-1245 v5's 1973, and it sits in the 44th percentile of all CPUs, same as the E3-1245 v5. The nearest rivals for the E-2276M include the Intel Core i7-7920HQ (1992, 0.2% ahead) and the Intel Core i5-8400T (2001, 0.3% behind), so it is competitive with other 6-core parts from its era.

Architecture Differences

The two processors come from different architectural families and target different sockets. The Intel Xeon E-2276M uses the Coffee Lake architecture, specifically Coffee Lake-H, and fits into Intel BGA 1440. The Intel Xeon E3-1245 v5 uses Skylake, specifically Skylake-DT, and fits into Intel Socket 1151. Both are built on Intel's 14 nm process node, but the die sizes differ: the E-2276M has a 154 mm² die, while the E3-1245 v5 is smaller at 122 mm².

Core and thread counts differ significantly. The E-2276M has 6 cores and 12 threads, while the E3-1245 v5 has 4 cores and 8 threads. Cache configurations also diverge. The E-2276M has 64 KB of L1 per core, 256 KB of L2 per core, and 12 MB of shared L3. The E3-1245 v5 has the same per-core L1 and L2 (64 KB and 256 KB), but only 8 MB of shared L3. The E3-1245 v5 does list a transistor count of 1,750 million, while the E-2276M does not have that figure recorded.

Clock speeds favor the E-2276M on paper. Its base clock is 2.80 GHz with a boost clock of 4.70 GHz. The E3-1245 v5 has a higher base clock at 3.50 GHz but a lower boost clock at 3.90 GHz. The E-2276M also has a much lower TDP at 45 watts versus 80 watts for the E3-1245 v5. That power difference is substantial, but it does not appear to hurt the E3-1245 v5 in the recorded benchmarks.

Memory support differs as well. The E-2276M supports DDR4 only, with dual-channel memory and a bandwidth of 42.7 GB/s. The E3-1245 v5 supports both DDR3 and DDR4, also dual-channel, but with a lower bandwidth of 34.1 GB/s. Both support ECC memory, which is expected for Xeon parts. Both also use PCIe Gen 3 with 16 lanes from the CPU.

Integrated graphics are present on both, but they differ. The E-2276M has UHD Graphics P630, while the E3-1245 v5 has HD Graphics P530. Neither is a gaming part, but they provide basic display output for workstation builds. Both are end-of-life products, and both have locked multipliers, so no overclocking is possible.

The release dates are spread apart. The E3-1245 v5 was released on 2015-10-18, while the E-2276M came later on 2019-05-28. The E3-1245 v5 had a launch MSRP of $294, while the E-2276M had a launch MSRP of $450. Part numbers are SR2LL for the E3-1245 v5 and SRFCK for the E-2276M.

The Verdict

The data is unambiguous: the Intel Xeon E3-1245 v5 wins every head-to-head benchmark recorded in the database. If your priority is raw performance in Cinebench-style workloads, the E3-1245 v5 is the correct choice. It delivers roughly 20.8% higher scores across all six tests, and that consistency is hard to ignore.

The E-2276M does bring more cores, more threads, a higher boost clock, more L3 cache, and lower power consumption. Those are real advantages on paper. But the benchmark results do not reflect them. The E3-1245 v5 simply outperforms the E-2276M in every measured test, despite being older, having fewer cores, and drawing more power.

For a workstation or server build where Cinebench-style rendering is the primary workload, the E3-1245 v5 is the better performer. The 6 wins against 0 wins in the head-to-head table make that clear. The E-2276M is not a bad processor, as its 44th percentile ranking and average score of 1996 show, but it loses to the E3-1245 v5 in every recorded comparison.

That said, the E-2276M has advantages that the benchmarks do not capture. It supports only DDR4, but with higher bandwidth (42.7 GB/s versus 34.1 GB/s). It has a much lower TDP of 45 watts, which matters for compact or thermally constrained systems. And it has more L3 cache (12 MB versus 8 MB) and a higher boost clock (4.70 GHz versus 3.90 GHz). If those features matter more to you than the benchmark deficits, the E-2276M could still be a reasonable pick.

But if you are choosing strictly on measured performance, the verdict is clear: pick the Intel Xeon E3-1245 v5. It wins every recorded test, and the margins are substantial and consistent.

FAQ

Q: Which processor wins more benchmarks?

A: The Intel Xeon E3-1245 v5 wins all 6 recorded head-to-head benchmarks. The Intel Xeon E-2276M wins 0.

Q: How big is the performance gap in Cinebench R23?

A: In Cinebench R23 multicore, the E3-1245 v5 scores 6822 versus 5400 for the E-2276M, a 20.8% difference. In single-core, the E3-1245 v5 scores 963 versus 762, a 20.9% difference.

Q: Does the E-2276M have any advantage in core count?

A: Yes, the E-2276M has 6 cores and 12 threads, while the E3-1245 v5 has 4 cores and 8 threads. However, this does not translate into a benchmark win in any recorded test.

Q: What is the TDP difference?

A: The E-2276M has a TDP of 45 watts, while the E3-1245 v5 has a TDP of 80 watts.

Q: Do both processors support ECC memory?

A: Yes, both the E-2276M and the E3-1245 v5 support ECC memory.

Q: What are the integrated graphics on each?

A: The E-2276M has UHD Graphics P630, while the E3-1245 v5 has HD Graphics P530.

Specification Differences

| Specification | Intel Xeon E-2276M | Intel Xeon E3-1245 v5 |

|---|---|---|

| Cores | 6 | 4 |

| Threads | 12 | 8 |

| Base Clock | 2.80 GHz | 3.50 GHz |

| Boost Clock | 4.70 GHz | 3.90 GHz |

| TDP | 45 W | 80 W |

| Socket | Intel BGA 1440 | Intel Socket 1151 |

| Architecture | Coffee Lake | Skylake |

| Codename | Coffee Lake-H | Skylake-DT |

| Process Node | 14 nm | 14 nm |

| Die Size | 154 mm² | 122 mm² |

| Transistors | Not recorded | 1,750 million |

| L3 Cache | 12 MB (shared) | 8 MB (shared) |

| Memory Support | DDR4 | DDR3, DDR4 |

| Memory Bandwidth | 42.7 GB/s | 34.1 GB/s |

| Integrated Graphics | UHD Graphics P630 | HD Graphics P530 |

| Release Date | 2019-05-28 | 2015-10-18 |

| Launch MSRP | $450 | $294 |

| Part Number | SRFCK | SR2LL |