Intel Core i7-1185G7E vs Intel Xeon E5-2640 v3 Comparison

# Intel Xeon E5-2640 v3 vs Intel Core i7-1185G7E

The data shows a surprisingly one-sided matchup: the Xeon E5-2640 v3 wins all six head-to-head benchmark comparisons, yet both processors land at exactly the same average benchmark score of 2703 and the same 50th percentile against all CPUs. This creates an unusual dynamic—the older server chip consistently edges out the mobile part in every Cinebench test, but the overall performance picture is far closer than the win count suggests.

Head-to-Head Benchmarks

The Xeon E5-2640 v3 takes every single benchmark in this comparison, with margins that remain remarkably consistent across all six tests. The largest gap appears in Cinebench R15 multicore, where the Xeon scores 942 against the Core i7-1185G7E's 836—a 12.7% advantage. That pattern holds almost exactly through the rest of the suite: R15 singlecore shows 132 versus 118 (11.9% delta), R20 multicore shows 3926 versus 3487 (12.6%), and R20 singlecore shows 553 versus 492 (12.4%).

The Cinebench R23 results reinforce the trend. In multicore, the Xeon posts 9348 compared to 8303 for the Core i7, a 12.6% edge. Singlecore R23 sees the Xeon at 1319 versus 1172, a 12.5% delta. These margins are tight enough that in real-world workloads, users would likely perceive the difference as modest rather than transformative. Still, the consistency is notable—the Xeon wins every round by essentially the same 12-13% spread, suggesting a fundamental throughput advantage rather than a workload-specific quirk.

There is one important caveat: the Core i7-1185G7E has two additional Geekbench results in its benchmark list (5459 multicore, 1756 singlecore) that the Xeon does not have. Those scores are not part of the head-to-head comparison, but they contribute to the Core i7's average score. Because both processors share the same 2703 average benchmark score and the same 50th percentile ranking, the overall performance picture is effectively a dead heat despite the Xeon's clean sweep in the Cinebench suite.

Architecture Differences

These two processors come from completely different eras and design philosophies. The Xeon E5-2640 v3 is a Haswell-EP server part built on Intel's 22 nm process, using the older Haswell architecture. It packs 8 cores and 16 threads with a base clock of 2.60 GHz and a boost clock of 3.40 GHz. The die is substantial at 356 mm², containing 2,600 million transistors, and it runs at a 90 W TDP.

The Core i7-1185G7E is a Tiger Lake-U mobile chip on Intel's 10 nm process, using the Willow Cove architecture. It has just 4 cores and 8 threads, but its clocks are far more aggressive: a base of 1800.00 MHz (which appears to be a typo in the data—likely 1.80 GHz) and a boost of 4.40 GHz. The die is much smaller at 144 mm², and the TDP is drastically lower at 15 W.

Cache configurations differ substantially. The Xeon provides 64 KB of L1 per core, 256 KB of L2 per core, and a large 20 MB shared L3 cache. The Core i7 offers a larger L1 at 80 KB per core, a much bigger L2 at 1.25 MB per core, but a smaller 12 MB shared L3. Despite the smaller total L3, the per-core cache capacity on the Tiger Lake part is significantly higher, which helps offset its lower core count.

Memory support also diverges. The Xeon uses DDR4 with a quad-channel memory bus and 59.7 GB/s of bandwidth, plus ECC support. The Core i7 supports both DDR4 and LPDDR4X over a dual-channel bus, with no ECC capability and no bandwidth figure listed. The Xeon also offers PCIe Gen 3 with 40 CPU lanes, while the Core i7 provides PCIe Gen 4 but only 4 CPU lanes—a massive difference in expansion capability.

Where Each One Wins

The Xeon E5-2640 v3 wins in every measured benchmark, but the nature of its victories points to specific strengths. Its 8-core/16-thread configuration with a 20 MB shared L3 cache and quad-channel memory makes it the clear choice for heavily threaded workloads that can use all available cores. The consistent 12-13% edge across both single and multicore tests suggests the Xeon's higher base clock (2.60 GHz versus the Core i7's heavily power-limited base) and larger cache pool provide a steady advantage regardless of thread count.

The Core i7-1185G7E's wins are not in the benchmark numbers but in the broader specification sheet. Its 4.40 GHz boost clock is substantially higher than the Xeon's 3.40 GHz, which would matter in bursty, short-duration workloads that can hit boost frequencies before thermal limits kick in. The integrated Iris Xe-LP Graphics G7 96EU is a significant feature the Xeon lacks entirely—any workload requiring GPU acceleration or display output without a discrete card favors the Core i7 immediately.

Power efficiency is another clear differentiator. The Core i7's 15 W TDP versus the Xeon's 90 W TDP means the mobile chip can operate in fanless or passively cooled systems, thin laptops, and embedded designs where the Xeon's power draw would be prohibitive. The Core i7's active production status and 2020 release date also indicate an ongoing platform, while the Xeon is end-of-life and released in 2014.

Specification Differences

| Specification | Intel Xeon E5-2640 v3 | Intel Core i7-1185G7E |

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

| Cores | 8 | 4 |

| Threads | 16 | 8 |

| Base Clock | 2.60 GHz | 1800.00 MHz |

| Boost Clock | 3.40 GHz | 4.40 GHz |

| TDP | 90 W | 15 W |

| Socket | Intel Socket 2011-3 | Intel BGA 1449 |

| Process Node | 22 nm | 10 nm |

| Die Size | 356 mm² | 144 mm² |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 256 KB (per core) | 1.25 MB (per core) |

| L3 Cache | 20 MB (shared) | 12 MB (shared) |

| Memory Support | DDR4 | DDR4, LPDDR4X |

| Memory Bus | Quad-channel | Dual-channel |

| ECC Support | Yes | No |

| PCIe | Gen 3, 40 Lanes | Gen 4, 4 Lanes |

| Integrated Graphics | None | Iris Xe-LP Graphics G7 96EU |

| Production Status | End-of-life | Active |

| Release Date | 2014-09-07 | 2020-09-01 |

| Launch MSRP | $939 | $431 |

FAQ

Q: Which processor is faster in single-core performance?

A: The Xeon E5-2640 v3 wins all three single-core Cinebench tests. It scores 132 versus 118 in R15 (11.9% delta), 553 versus 492 in R20 (12.4%), and 1319 versus 1172 in R23 (12.5%).

Q: Does the Core i7-1185G7E have any performance advantage at all?

A: In the head-to-head benchmark suite, no—the Xeon wins all six tests. However, the Core i7 has additional Geekbench scores (5459 multicore, 1756 singlecore) that are not part of the comparison, and both processors share the same average benchmark score of 2703.

Q: Can the Core i7-1185G7E use ECC memory?

A: No. The Core i7-1185G7E does not support ECC memory, while the Xeon E5-2640 v3 does. This makes the Xeon the only option for error-correcting memory in server or workstation environments.

Q: What are the memory bandwidth differences?

A: The Xeon E5-2640 v3 uses a quad-channel DDR4 memory bus with 59.7 GB/s of bandwidth. The Core i7-1185G7E uses a dual-channel bus supporting DDR4 and LPDDR4X, with no bandwidth figure listed in the data.

Q: Which processor is better for a small, low-power system?

A: The Core i7-1185G7E is the clear choice for power-constrained designs. Its 15 W TDP is one-sixth of the Xeon's 90 W TDP, and it includes integrated Iris Xe-LP Graphics, allowing for compact systems without a discrete GPU.

Q: Why do both processors have the same average benchmark score?

A: The average benchmark score of 2703 is identical for both parts, and both sit at the 50th percentile against all CPUs. The nearest rival data shows the Core i7-8700T at 2701 (0.1% delta) and the Core i5-1345UE at 2698 (0.2%), while the Xeon E-2226G scores 2709 (-0.2%). This suggests the overall performance class is the same, even though the Xeon wins the specific Cinebench tests.

The Verdict

The benchmark data says the Xeon E5-2640 v3 is faster in every measured Cinebench test, with a consistent 12-13% margin across both single and multicore workloads. If raw CPU throughput in that specific benchmark suite is the only criterion, the Xeon is the pick. Its 8 cores, 16 threads, 20 MB L3 cache, and quad-channel memory with ECC support make it a legitimate server/workstation part for multi-threaded compute tasks.

But the selection is not that simple. The Core i7-1185G7E matches the Xeon's overall average benchmark score exactly, meaning the broader performance picture is a tie. The Core i7 is also six years newer, actively in production, and consumes only 15 W—a fraction of the Xeon's 90 W. It has integrated graphics, a much higher 4.40 GHz boost clock, and PCIe Gen 4 support. The Xeon offers vastly more PCIe lanes (40 versus 4), ECC memory, and quad-channel bandwidth.

The decision hinges on the use case. For rack servers, workstations, or any environment where ECC memory, massive expansion capacity, and sustained multi-threaded throughput matter, the Xeon E5-2640 v3 is the better choice. For mobile systems, embedded designs, or any power-sensitive application where integrated graphics and a live production roadmap are essential, the Core i7-1185G7E is the only sensible option. The 12% benchmark advantage of the Xeon is real but narrow, and it comes with a 6x power penalty and a platform that has been end-of-life for years. The data does not declare a universal winner—it declares two different tools for two different jobs.