Intel Core i7-7740X vs Intel Xeon E5-4620 v3 Comparison

Head-to-Head Benchmarks

The benchmark data paints a remarkably consistent picture: the Intel Xeon E5-4620 v3 wins every single head-to-head comparison in the database, taking all six recorded tests. The Intel Core i7-7740X, despite its much higher clock speeds, trails in every workload category. This is not a case of narrow margins either; the deltas are uniform and decisive.

In Cinebench R15 multicore, the Xeon scores 901 against the Core i7's 831, a 7.8% deficit for the desktop chip. The single-core test tells the same story, with the Xeon at 127 and the Core i7 at 117, again a 7.9% gap. These results are counterintuitive given the clock speed disparity, but they hold up across every iteration of the Cinebench suite.

Moving to Cinebench R20, the pattern repeats. The Xeon posts 3757 in multicore versus 3465 for the Core i7, a 7.8% difference. In single-core, the Xeon's 530 beats the Core i7's 488 by 7.9%. The most recent Cinebench R23 results show no change in the hierarchy: the Xeon leads 8946 to 8250 in multicore and 1263 to 1164 in single-core, both at 7.8% margins.

The consistency of these deltas is notable. Every single-core test shows the Xeon ahead by either 7.8% or 7.9%, and every multicore test shows the same range. This suggests a fundamental architectural advantage rather than a workload-specific quirk. The Core i7-7740X, with its 4.30 GHz base and 4.60 GHz boost clocks, simply cannot overcome the Xeon's broader execution resources despite the frequency deficit.

Looking at the broader database context, the Core i7-7740X sits at the 50th percentile of all CPUs, with an average benchmark score of 2648. Its nearest rivals include the Intel Xeon E-2274G at 2643 (0.2% behind), the Intel Core i7-5820K at 2642 (0.2% behind), the Intel Core i9-8950HK at 2641 (0.3% behind), and the Intel Core i7-1195G7 at 2638 (0.4% behind). These are all extremely close scores, indicating the Core i7 is clustered with a tight group of similarly performing processors.

The Xeon E5-4620 v3, by contrast, holds the 49th percentile with an average score of 2587. Its nearest rivals include the Intel Xeon E-2174G at 2588 (essentially tied), the AMD Ryzen 3 PRO 4355GE at 2596 (0.3% ahead), the AMD Ryzen 9 4900HS at 2573 (0.5% behind), and the Intel Core i7-8850H at 2604 (0.7% ahead). The Xeon's position in this cluster is slightly lower than the Core i7's, yet it wins every head-to-head matchup between the two. This is a reminder that percentile rankings and direct comparisons can diverge.

The data shows no scenario where the Core i7-7740X takes a win. The Xeon's advantage is not limited to multi-threaded workloads where its 10 cores and 20 threads would naturally dominate; it also wins in single-threaded tests, which typically favor higher clock speeds. This is a significant finding for anyone comparing these two processors.

The Verdict

From the recorded data, the Intel Xeon E5-4620 v3 is the superior processor in every measured category. It wins all six head-to-head benchmarks, with consistent 7.8% to 7.9% margins across both single-core and multi-core tests. There is no workload in the database where the Core i7-7740X takes the lead.

The Xeon's profile suggests it is designed for server and workstation deployments. It carries a launch MSRP of $1668, supports ECC memory, and offers 40 PCIe Gen 3 lanes. The Core i7-7740X, in contrast, is a desktop part with an unlocked multiplier and no ECC support. Its production status is listed as active, while the Xeon is end-of-life.

For users prioritizing raw benchmark performance, the Xeon E5-4620 v3 is the clear choice based on the data. Its 10-core, 20-thread configuration with 25 MB of shared L3 cache delivers higher scores in every test. The Core i7-7740X, with 4 cores and 8 threads, cannot match this throughput despite its significantly higher clock speeds.

However, the choice is not solely about benchmark scores. The Core i7-7740X targets a different market segment, offering an unlocked multiplier for overclocking and a newer Kaby Lake architecture. The Xeon is locked, runs on the older Haswell-EP design, and is aimed at stability and reliability in server environments. Users building a desktop workstation with overclocking in mind would find the Core i7 more aligned with their needs, even though it loses every recorded benchmark.

The percentile data adds nuance. The Core i7-7740X sits at the 50th percentile of all CPUs, while the Xeon sits at the 49th. This means the Core i7 performs better relative to the entire CPU landscape, even though it loses this specific matchup. The Xeon's average score of 2587 is dragged down by its position in a dense cluster of processors, while the Core i7's 2648 average places it slightly higher in the distribution.

For buyers who need ECC memory, multi-threaded rendering, or server-grade reliability, the Xeon E5-4620 v3 is the data-backed pick. For those who want a desktop processor with an unlocked multiplier and a more modern architecture, the Core i7-7740X offers those features despite its benchmark deficit. The verdict depends on which factors matter more: raw scores or platform attributes.

Architecture Differences

The architectural gap between these two processors is substantial. The Core i7-7740X uses Kaby Lake, specifically the Kaby Lake-X variant, built on Intel's 14 nm process. The Xeon E5-4620 v3 uses Haswell, specifically Haswell-EP, on Intel's older 22 nm node. This process difference explains why the Core i7 can achieve much higher clock speeds while the Xeon relies on more cores to deliver performance.

The Xeon's die is physically large, with 356 mm² of silicon and 2,600 million transistors. The Core i7's die size and transistor count are not recorded in the database, but the 14 nm process implies a smaller, denser design. The Xeon's larger die accommodates 10 cores and 20 threads, while the Core i7 packs only 4 cores and 8 threads.

Cache configurations differ significantly. Both processors allocate 64 KB of L1 and 256 KB of L2 per core, but the shared L3 cache tells the story: the Xeon has 25 MB shared, while the Core i7 has only 8 MB shared. This threefold difference in L3 capacity gives the Xeon a substantial advantage in workloads that benefit from large working sets.

The Xeon's memory subsystem also stands out. It supports DDR4 with quad-channel memory and has a recorded memory bandwidth of 59.7 GB/s. The Core i7 also supports DDR4 with quad-channel memory, but its bandwidth figure is not recorded. Both support the same memory type, but the Xeon's server-oriented design includes ECC memory support, which the Core i7 lacks.

PCIe capabilities differ as well. The Xeon provides Gen 3 with 40 lanes from the CPU, while the Core i7 also uses Gen 3 but does not have a lane count recorded. The Xeon's 40 lanes are typical for a server processor, enabling extensive expansion options. The Core i7's lane count is unknown from the data.

The production status and lifecycle also diverge. The Core i7 is active, while the Xeon is end-of-life. The Core i7 was released in June 2017, while the Xeon came out in May 2015. This two-year gap explains the architectural differences: the Core i7 benefits from a newer process and microarchitecture, yet it still loses to the older Xeon in every benchmark.

Specification Differences

The recorded specifications show several clear distinctions between the two processors. The most obvious is core count: the Core i7-7740X has 4 cores and 8 threads, while the Xeon E5-4620 v3 has 10 cores and 20 threads. This 2.5x core advantage for the Xeon is the primary driver of its multicore performance lead.

Clock speeds are starkly different. The Core i7 runs at 4.30 GHz base and 4.60 GHz boost, while the Xeon runs at 2.00 GHz base and 2.60 GHz boost. The Core i7's base clock is more than double the Xeon's base clock, yet it still loses in single-core benchmarks. This indicates that raw clock speed alone does not determine performance.

Thermal design power is close, with the Core i7 rated at 112 W and the Xeon at 105 W. The Core i7's higher TDP is notable given its far fewer cores, reflecting the energy cost of high clock speeds on the 14 nm process. The Xeon's lower TDP for 2.5x the cores shows the efficiency of its wider, slower design.

Sockets differ: the Core i7 uses Intel Socket 2066, while the Xeon uses Intel Socket 2011-3. These are incompatible platforms, meaning users cannot swap between the two without changing motherboards. The market segments also differ, with the Core i7 listed as Desktop and the Xeon as Server/Workstation.

The Xeon supports ECC memory, while the Core i7 does not. The Xeon also has a recorded memory bandwidth of 59.7 GB/s, a figure not available for the Core i7. The Xeon's part number is SR22K, while the Core i7 has no part number recorded.

The multiplier is unlocked on the Core i7 but locked on the Xeon. This means the Core i7 can be overclocked, while the Xeon runs at fixed clocks. The Xeon's launch MSRP is $1668, while the Core i7 has no recorded launch MSRP.

FAQ

Q: Which processor wins more benchmarks in the database?

A: The Intel Xeon E5-4620 v3 wins all six head-to-head tests, including every Cinebench R15, R20, and R23 single-core and multi-core benchmark. The Core i7-7740X wins zero tests.

Q: How large is the performance gap between the two?

A: The Xeon leads by 7.8% in multicore tests and 7.9% in single-core tests across all Cinebench versions. The margins are consistent, ranging from 7.8% to 7.9% in every recorded comparison.

Q: Does the Core i7's higher clock speed help it win any benchmark?

A: No. Despite running at 4.30 GHz base and 4.60 GHz boost versus the Xeon's 2.00 GHz base and 2.60 GHz boost, the Core i7 loses every single-core test. The Xeon's architectural efficiency overcomes the clock disadvantage.

Q: Which processor supports ECC memory?

A: The Intel Xeon E5-4620 v3 supports ECC memory, while the Intel Core i7-7740X does not. This makes the Xeon suitable for error-sensitive server and workstation workloads.

Q: What are the core and thread counts for each processor?

A: The Core i7-7740X has 4 cores and 8 threads. The Xeon E5-4620 v3 has 10 cores and 20 threads, giving it 2.5 times the cores and threads of the Core i7.

Q: Is the Xeon E5-4620 v3 still in production?

A: No, the Xeon is listed as end-of-life in the database. The Core i7-7740X is listed as active, meaning it is still in production.