Intel Xeon E-2176M vs Intel Xeon E5-2640 v3 Comparison

FAQ

Q: Which processor has the higher boost clock speed?

A: The Intel Xeon E-2176M boosts to 4.40 GHz, while the Intel Xeon E5-2640 v3 reaches 3.40 GHz. The E-2176M has a 1.0 GHz advantage in peak frequency.

Q: How do the two CPUs compare in Cinebench R23 multi-core performance?

A: The Xeon E5-2640 v3 scores 9348, which is 2.2% higher than the E-2176M’s 9140. The older 8-core chip wins this test despite its lower clock speed.

Q: Which processor supports more PCIe lanes?

A: The Xeon E5-2640 v3 provides 40 PCIe Gen 3 lanes (CPU only), while the Xeon E-2176M offers 16 lanes. The E5-2640 v3 has 24 additional lanes for expansion.

Q: Do both processors support ECC memory?

A: Yes, both the Xeon E-2176M and the Xeon E5-2640 v3 support ECC memory. Both are listed with ECC memory as true.

Q: What is the process node difference between the two?

A: The Xeon E-2176M is built on a 14 nm process, while the Xeon E5-2640 v3 uses a 22 nm node. The newer process allows the E-2176M to operate at a much lower TDP of 45 W versus 90 W for the E5-2640 v3.

Q: Which chip has the higher average benchmark score?

A: The Xeon E-2176M has an average benchmark score of 2751, compared to 2703 for the Xeon E5-2640 v3. The E-2176M edges ahead by 1.8% in the aggregate metric.

Architecture Differences

The two processors come from different Intel generations and design philosophies. The Xeon E-2176M belongs to the Coffee Lake-H family, built on a 14 nm process node with a die size of 154 mm². It uses the Coffee Lake architecture and is packaged in an Intel BGA 1440 socket, indicating a mobile-oriented design despite its server/workstation market segment. In contrast, the Xeon E5-2640 v3 is a Haswell-EP part, fabricated on a 22 nm process with a significantly larger die of 356 mm² and 2,600 million transistors. It uses the Intel Socket 2011-3, a traditional high-end desktop and server platform.

Core configuration differs substantially. The E-2176M has 6 cores and 12 threads, while the E5-2640 v3 has 8 cores and 16 threads, giving the older chip a 2-core and 4-thread advantage. Cache hierarchies also diverge: both share 64 KB L1 and 256 KB L2 per core, but the E5-2640 v3 has 20 MB of shared L3 cache, while the E-2176M has 12 MB. That 8 MB difference favors the older chip in cache-sensitive workloads.

Memory architecture is another differentiator. The E-2176M uses dual-channel DDR4 with a memory bandwidth of 42.7 GB/s. The E5-2640 v3 uses quad-channel DDR4, doubling the memory channels and raising bandwidth to 59.7 GB/s, a 39.8% higher theoretical throughput. PCIe connectivity also favors the E5-2640 v3, which offers 40 lanes versus 16 lanes on the E-2176M.

Integrated graphics are present only on the E-2176M, which includes UHD Graphics P630. The E5-2640 v3 has no integrated graphics, requiring a discrete GPU for display output. Clock speeds differ as well: the E-2176M has a base clock of 2.70 GHz and a boost of 4.40 GHz, while the E5-2640 v3 runs at 2.60 GHz base and 3.40 GHz boost. Power envelopes are starkly different, with the E-2176M rated at 45 W TDP versus 90 W for the E5-2640 v3.

Release timing shows a four-year gap. The E5-2640 v3 launched in September 2014, while the E-2176M arrived in April 2018. Both are now end-of-life in production status.

Head-to-Head Benchmarks

The recorded benchmark data covers six Cinebench tests, and the Xeon E5-2640 v3 wins all six. The margins are consistent but narrow, clustering around 2.2% to 2.3% in favor of the older chip.

In Cinebench R15 multi-core, the E5-2640 v3 scores 942 against 921 for the E-2176M, a delta of negative 2.2% for the E-2176M. The single-core R15 result is similar: 132 versus 129, a 2.3% deficit. Moving to Cinebench R20, the multi-core scores are 3926 for the E5-2640 v3 and 3838 for the E-2176M, again a 2.2% gap. Single-core R20 shows 553 versus 541, another 2.2% difference.

Cinebench R23 multi-core sees the E5-2640 v3 post 9348, while the E-2176M reaches 9140, a 2.2% margin. The R23 single-core test shows 1319 versus 1290, also 2.2%. Across all six tests, the E5-2640 v3 maintains a nearly uniform lead of 2.2% to 2.3%, suggesting a consistent performance advantage that is not workload-dependent within the Cinebench suite.

The E-2176M does have one additional benchmark category in the database: Geekbench. It scores 4787 in multi-core and 1362 in single-core. The E5-2640 v3 has no Geekbench results recorded, so no direct comparison is possible there.

The win count is decisive: the E5-2640 v3 wins 6 head-to-head benchmark comparisons, while the E-2176M wins 0. However, the average benchmark score tells a different story when including all recorded tests. The E-2176M averages 2751, which is 1.8% higher than the E5-2640 v3’s 2703. This discrepancy arises because the Geekbench scores for the E-2176M pull its average up, while the E5-2640 v3 lacks those additional data points.

The Verdict

The data presents a nuanced picture. In pure Cinebench performance, the Xeon E5-2640 v3 holds a small but consistent edge across all tested versions, from R15 to R23, in both single-core and multi-core modes. Its 8 cores and 16 threads, combined with 20 MB of L3 cache and quad-channel memory, deliver a 2.2% to 2.3% advantage in every rendering test. For workloads that rely heavily on Cinebench-style rendering, the older chip is the better performer according to the measurements.

The Xeon E-2176M counters with a higher average benchmark score of 2751 versus 2703, thanks to its Geekbench results. It also offers a dramatically lower TDP of 45 W versus 90 W, integrated graphics, and a much higher boost clock of 4.40 GHz. The E-2176M is built on a newer 14 nm process, which explains its efficiency gains.

For a server or workstation that prioritizes multi-threaded throughput and memory bandwidth, the E5-2640 v3 is the data-supported choice. Its quad-channel memory and 40 PCIe lanes make it suitable for memory-intensive and expansion-heavy environments. For a compact or power-constrained deployment where integrated graphics and lower heat output matter, the E-2176M is the better fit, even though it loses the Cinebench comparisons.

Neither chip is a clear winner overall. The E5-2640 v3 wins every head-to-head rendering test, but the E-2176M wins the average score metric. The decision hinges on whether the workload resembles Cinebench rendering or benefits from the newer architecture’s features and efficiency.

Specification Differences

The two processors differ across nearly every major specification category. Core counts differ: the E-2176M has 6 cores and 12 threads, while the E5-2640 v3 has 8 cores and 16 threads. Base clocks are close, 2.70 GHz versus 2.60 GHz, but boost clocks diverge significantly: 4.40 GHz versus 3.40 GHz. TDP is a major gap, with 45 W for the E-2176M and 90 W for the E5-2640 v3.

Sockets are incompatible: Intel BGA 1440 for the E-2176M versus Intel Socket 2011-3 for the E5-2640 v3. The process node is 14 nm versus 22 nm, and die sizes are 154 mm² versus 356 mm². The E5-2640 v3 lists 2,600 million transistors, while the E-2176M has no recorded transistor count.

Cache sizes differ in L3 only: 12 MB shared for the E-2176M, 20 MB shared for the E5-2640 v3. L1 and L2 are identical at 64 KB and 256 KB per core. Memory channels are dual-channel versus quad-channel, with bandwidths of 42.7 GB/s and 59.7 GB/s, respectively. PCIe lanes are 16 versus 40, both Gen 3.

Integrated graphics are present only on the E-2176M (UHD Graphics P630). The E5-2640 v3 has none. Release dates differ by about 3.5 years: April 2018 versus September 2014. The launch MSRP for the E-2176M is $450, while the E5-2640 v3 has a launch MSRP of $939. Both support ECC memory and are end-of-life. Neither has an unlocked multiplier.

Where Each One Wins

The Xeon E5-2640 v3 wins in all six Cinebench head-to-head tests. Its victory is consistent across R15, R20, and R23, in both single-core and multi-core modes. The margin is always 2.2% or 2.3%. This chip is the better choice for rendering workloads that mirror Cinebench, where the extra two cores and larger 20 MB L3 cache provide a measurable advantage. Additionally, the quad-channel memory interface delivers 59.7 GB/s of bandwidth, which is 39.8% higher than the E-2176M’s 42.7 GB/s, favoring memory-heavy server tasks. The 40 PCIe lanes also make it superior for systems requiring many expansion cards, NVMe drives, or GPU accelerators.

The Xeon E-2176M wins in other recorded metrics. Its average benchmark score of 2751 exceeds the E5-2640 v3’s 2703, largely due to Geekbench results where the E-2176M posts 4787 multi-core and 1362 single-core. The E5-2640 v3 has no Geekbench data, so the E-2176M is the only chip with a verified score in that suite. The E-2176M also wins on efficiency, with a 45 W TDP that is exactly half of the E5-2640 v3’s 90 W rating. Its 4.40 GHz boost clock is 29.4% higher than the E5-2640 v3’s 3.40 GHz, giving it an edge in lightly threaded tasks that benefit from raw frequency. The integrated UHD Graphics P630 means the E-2176M can run without a discrete GPU, unlike the E5-2640 v3.

In practical terms, the E5-2640 v3 is the pick for dense multi-threaded compute and memory-bandwidth-sensitive applications, while the E-2176M suits lower-power systems, single-threaded responsiveness, and environments where a GPU is not desired. Both are end-of-life server/workstation parts, but they serve different niches within that market.