Intel Core i5-7640X vs Intel Xeon E5-4648 v3 Comparison

Head-to-Head Benchmarks

The recorded data presents a remarkably one-sided comparison. Across all six shared Cinebench tests, the Intel Xeon E5-4648 v3 takes the win, and the margins are strikingly consistent. In the Cinebench R15 multicore test, the Xeon scores 776 against the Core i5-7640X's 607, a 27.8% advantage. The single-core R15 result tells the same story: 109 for the Xeon versus 85 for the Core i5, a 28.2% lead. That the server chip wins single-threaded performance at all is notable, given the Core i5's much higher base and boost clocks.

The pattern holds in newer workloads. Cinebench R20 multicore shows the Xeon at 3234 versus 2533, a 27.7% gap. The single-core R20 result is 456 against 357, again 27.7%. Moving to Cinebench R23, the Xeon posts 7701 in multi-core, while the Core i5 manages 6031, a 27.7% difference. The R23 single-core test follows with 1087 versus 851, another 27.7% margin. Every head-to-head benchmark lands within a narrow band of 27.7% to 28.2%, which suggests the performance relationship is nearly uniform regardless of workload generation or thread count.

The Core i5-7640X does have one benchmark in its own record that the Xeon lacks: Geekbench. Here it scores 5137 in multi-core and 1736 in single-core. But since the Xeon has no recorded Geekbench result, this cannot be compared directly. The database's averaged benchmark score places the Xeon at 2227 and the Core i5 at 2167, a modest overall difference of about 2.8%. Both processors sit at the 47th percentile among all CPUs, meaning their aggregate standing in the database is identical, even though the direct Cinebench comparisons favor the Xeon by a wide margin.

The Xeon's nearest rivals in average score are the Intel Core i7-8559U at 2225 (0.1% behind), the Intel Core i7-5775C at 2224 (0.1% behind), the Intel Xeon D-1548 at 2231 (0.2% ahead), and the Intel Xeon D-1715TER at 2238 (0.5% ahead). The Core i5-7640X's nearest rivals are the Intel Core i5-1145G7E at 2174 (0.3% ahead), the AMD Ryzen 5 3400GE at 2175 (0.3% ahead), the Intel Core i7-5950HQ at 2158 (0.4% behind), and the Intel Core i7-1185GRE at 2178 (0.5% ahead). Neither chip shows a dramatic separation from its immediate neighbors, indicating that the average score hides the stark divergence seen in the direct Cinebench tests.

FAQ

Q: Which processor wins the most shared benchmarks?

A: The Intel Xeon E5-4648 v3 wins all six shared Cinebench tests. It leads in every single-core and multi-core variant from R15 through R23, with deltas ranging from 27.7% to 28.2%.

Q: Is the Xeon faster in single-core performance despite its lower clock speed?

A: Yes. The Xeon's base clock is 1700 MHz and boost is 2.20 GHz, while the Core i5 runs at 3900 MHz base and 4.30 GHz boost. Yet the Xeon still wins single-core Cinebench R15 by 28.2%, R20 by 27.7%, and R23 by 27.7%.

Q: What is the average benchmark score difference between the two?

A: The Xeon's average score is 2227, and the Core i5's average is 2167. That is a difference of 60 points, roughly 2.8% in the Xeon's favor, which is far smaller than the direct Cinebench gaps.

Q: Do both processors occupy the same percentile rank?

A: Yes, both are at the 47th percentile among all CPUs in the database. Their aggregate standing is identical, even though their direct head-to-head results show the Xeon substantially ahead.

Q: Does the Core i5 have any benchmark result the Xeon does not?

A: Yes, the Core i5 has Geekbench scores of 5137 multi-core and 1736 single-core. The Xeon has no Geekbench entry in the database, so no direct comparison is possible for that test.

Q: How close are the nearest rivals for each chip?

A: The Xeon's closest rival, the Intel Core i7-8559U, is only 0.1% behind in average score, while the Intel Xeon D-1715TER is 0.5% ahead. The Core i5's closest rival, the Intel Core i7-5950HQ, is 0.4% behind, and the Intel Core i7-1185GRE is 0.5% ahead.

Where Each One Wins

The Xeon E5-4648 v3 is the clear choice for any workload represented by the shared Cinebench tests. Its 12 cores and 24 threads deliver a 27.8% lead in R15 multi-core and a 27.7% lead in both R20 and R23 multi-core. For rendering, video encoding, or any heavily threaded task in the Cinebench family, the data points unambiguously to the Xeon. Even in single-core tests, which typically favor high clock speeds, the Xeon wins by the same margin. This suggests the Core i5's higher clocks do not translate into a performance advantage in these specific benchmarks.

The Core i5-7640X does hold a unique position in the database: it has a Geekbench multi-core score of 5137 and a single-core score of 1736. Since the Xeon lacks any Geekbench result, the Core i5 is the only one of the two that can be assessed in that benchmark suite. Users relying on Geekbench as their primary metric would have to consider the Core i5, but the absence of a Xeon score means no comparative statement can be made.

The Core i5 also has an unlocked multiplier, which is not something the Xeon offers. That makes the Core i5 the only one of the pair that can be overclocked, at least in principle. For workloads outside the measured Cinebench tests, the Core i5's higher base and boost clocks could matter, but the recorded data does not support a claim that it wins any measured test.

Specification Differences

The two processors differ in almost every core specification. The Xeon has 12 cores and 24 threads, while the Core i5 has 4 cores and 4 threads. Base clocks are 1700 MHz for the Xeon and 3900 MHz for the Core i5. Boost clocks are 2.20 GHz and 4.30 GHz, respectively. The Xeon's TDP is 105 watts, while the Core i5's is 112 watts.

The Xeon uses the Intel Socket 2011-3, while the Core i5 uses Intel Socket 2066. The Xeon's architecture is Haswell with the codename Haswell-EP, and its generation is listed as Xeon E5 (Haswell-EP). The Core i5 uses Kaby Lake with the codename Kaby Lake-X, generation Core i5 (X-Series 7th Gen). The process node is 22 nm for the Xeon and 14 nm for the Core i5. The Xeon lists 2,600 million transistors and a die size of 356 mm², while the Core i5 has no transistor count or die size recorded.

Cache structures differ sharply. Both have 64 KB L1 per core and 256 KB L2 per core, but the shared L3 is 30 MB on the Xeon versus 6 MB on the Core i5. Memory support is DDR4 for both, and both use a quad-channel memory bus. The Xeon's memory bandwidth is listed at 59.7 GB/s, while the Core i5 has no memory bandwidth figure. ECC memory is supported on the Xeon but not on the Core i5. PCIe is Gen 3 with 40 lanes (CPU only) for the Xeon, while the Core i5 simply lists Gen 3 without a lane count.

Neither processor has integrated graphics. The Xeon targets the Server/Workstation market segment and is end-of-life, with a launch MSRP of $2405. The Core i5 targets the Desktop segment, has no production status listed, and has no launch MSRP recorded. The Xeon's multiplier is locked, while the Core i5's is unlocked. The Xeon has a part number (SR26R), while the Core i5 has none listed.

Architecture Differences

The Xeon E5-4648 v3 is built on the Haswell-EP architecture, a 22 nm design from Intel with 2,600 million transistors on a 356 mm² die. The Core i5-7640X uses the Kaby Lake-X architecture on a 14 nm process, with no transistor or die size data recorded. The process node difference is significant: 22 nm versus 14 nm, which typically implies the newer node offers better power efficiency per transistor, though the Xeon still manages a lower TDP of 105 watts versus 112 watts for the Core i5.

The Xeon's cache hierarchy is much larger, with 30 MB of shared L3 compared to 6 MB on the Core i5. Both share the same per-core L1 and L2 sizes, but the Xeon's thread count doubles its core count, giving it 24 threads against the Core i5's 4. The Xeon also supports ECC memory, a feature absent from the Core i5, which aligns with its server/workstation positioning.

The Xeon's PCIe implementation includes 40 lanes from the CPU, while the Core i5's PCIe is listed only as Gen 3 with no lane count. The Xeon's memory bandwidth is recorded at 59.7 GB/s, while the Core i5 has no such figure. The release dates differ by about two years, with the Xeon appearing in mid-2015 and the Core i5 in mid-2017, but the architecture lineage is clearly different: Haswell-EP is a server-oriented design, while Kaby Lake-X is a desktop enthusiast part.

The Xeon's generation label explicitly ties it to the Haswell-EP family, whereas the Core i5 belongs to the X-Series 7th Gen Kaby Lake lineup. The Xeon's production status is end-of-life, while the Core i5 has no production status listed. The multiplier unlock on the Core i5 is a notable architectural feature for overclocking, something the Xeon does not offer.

The Verdict

The data makes one thing clear: in every shared benchmark, the Intel Xeon E5-4648 v3 outperforms the Intel Core i5-7640X by a consistent margin of roughly 28%. That holds for both single-core and multi-core tests across Cinebench R15, R20, and R23. Anyone choosing between these two for Cinebench-style workloads should pick the Xeon without hesitation.

The Core i5-7640X is not without its own merits. It has a Geekbench result in the database, which the Xeon lacks, and its unlocked multiplier offers overclocking potential that the Xeon cannot match. Its higher base and boost clocks are recorded, but those clocks do not produce a win in any measured test against the Xeon.

For server and workstation tasks, the Xeon's ECC memory support, 30 MB of L3 cache, 40 PCIe lanes, and 59.7 GB/s memory bandwidth make it the obvious choice. For desktop users who prioritize overclocking and rely on Geekbench, the Core i5 is the only one of the two with recorded data in that area. The average scores are close, with the Xeon at 2227 and the Core i5 at 2167, but the head-to-head results tell a different story. The Xeon wins every direct comparison, and the verdict follows the data: the Xeon is the stronger processor in all measured shared tests.