Intel Pentium Gold G5500 vs Intel Xeon E5640 Comparison

The Intel Xeon E5640 and Intel Pentium Gold G5500 represent two very different approaches to processor design, separated by eight years of silicon evolution. The Xeon E5640 is a server-focused Westmere part from 2010, built for a different era of computing, while the Pentium Gold G5500 is a desktop Coffee Lake chip from 2018. Despite their generational gap and divergent architectures, the benchmark data reveals a surprisingly tight contest, with the older Xeon winning every single head-to-head test, albeit by extremely narrow margins. The data suggests that raw core count and thread count can offset a significant clock speed disadvantage, but the overall performance envelope is nearly identical.

Where Each One Wins

The head-to-head benchmark results are remarkably one-sided in terms of victory count, yet the margins tell a story of near-parity. The Intel Xeon E5640 wins all five Cinebench comparisons, but the largest margin of victory is a mere 0.6%. This is not a case of one processor dominating another; it is a case of one processor consistently edging out the other by a hair in every workload tested.

The Xeon E5640’s wins come in both multi-core and single-core tests. In multi-core workloads like Cinebench R15, R20, and R23, its advantage is likely attributable to its 4 cores and 8 threads, which provide more parallel processing capacity than the Pentium Gold G5500’s 2 cores and 4 threads. The Xeon’s larger 12 MB shared L3 cache may also help in these scenarios, providing more room for frequently accessed data. However, the fact that the Xeon also wins the single-core tests, where its lower 2.67 GHz base clock (versus 3.80 GHz) should be a handicap, suggests that the architectural efficiency of the newer Pentium Gold is not enough to overcome the older Westmere design's per-core strength.

The Pentium Gold G5500, despite losing all tests, has its own sphere of influence. Its 3.80 GHz base clock is significantly higher, and it features a newer 14 nm process node versus the Xeon’s 32 nm node. This translates to lower power consumption (54 W TDP versus 80 W) and a more modern feature set, including integrated graphics and DDR4 memory support. The data shows that the Pentium Gold is not a performance winner, but it is a platform winner, offering a more modern foundation with better efficiency and features that the Xeon simply lacks.

Architecture Differences

The architectural chasm between these two processors is vast. The Xeon E5640 is built on Intel’s Westmere architecture, specifically the Westmere-EP die, fabricated on a 32 nm process. It packs 1,170 million transistors into a 239 mm² die. In contrast, the Pentium Gold G5500 uses the Coffee Lake architecture on a 14 nm node, with a much smaller 126 mm² die. The transistor count for the Pentium Gold is not listed, but the process node difference alone highlights a massive generational leap in manufacturing efficiency.

Core configurations differ fundamentally. The Xeon E5640 offers 4 cores and 8 threads, with a base clock of 2.67 GHz and a boost clock of 2.93 GHz. The Pentium Gold G5500 is a dual-core part with 4 threads, running at a fixed 3.80 GHz with no boost clock listed. This means the Pentium Gold relies on a high constant frequency, while the Xeon uses a more modest clock speed supplemented by extra threads and a larger cache.

Cache hierarchies also diverge. Both have 64 KB of L1 and 256 KB of L2 per core, but the shared L3 cache is dramatically different: the Xeon has 12 MB shared, while the Pentium Gold has only 4 MB shared. Memory support is another key divider. The Xeon uses triple-channel DDR3, while the Pentium Gold uses dual-channel DDR4 with a listed memory bandwidth of 38.4 GB/s. The Xeon’s memory bandwidth is not specified, but the platform differences are clear. The Pentium Gold also integrates UHD Graphics 630, whereas the Xeon has no integrated graphics, and it supports PCIe Gen 3 with 16 lanes, while the Xeon is limited to Gen 2.

The Verdict

The benchmark data presents a clear, if narrow, verdict. The Intel Xeon E5640 is the performance winner, taking all five head-to-head Cinebench tests. However, the margins are so slim—0.5% to 0.6%—that the difference is effectively negligible for real-world use. Both processors land in the 32nd percentile of all CPUs, and their average benchmark scores are nearly identical: 1137 for the Xeon versus 1130 for the Pentium Gold.

For a user prioritizing raw multi-threaded performance, even by a marginal amount, the Xeon E5640 is the choice based on the data. Its 8 threads and larger cache provide a slight edge in rendering and heavily threaded tasks. For a user prioritizing modern features, efficiency, and a more recent platform, the Pentium Gold G5500 is the logical pick. It offers a much higher clock speed, lower TDP, integrated graphics, DDR4 support, and PCIe Gen 3, all of which are absent from the aging Xeon. The data shows the Xeon wins on performance, but the Pentium Gold wins on platform modernity and operational efficiency. The choice depends entirely on whether the user values a marginal performance edge or a significantly more modern feature set.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon E5640 has 4 cores and 8 threads, while the Intel Pentium Gold G5500 has 2 cores and 4 threads.

Q: What is the performance difference in multi-core workloads?

A: In Cinebench R23 multi-core, the Xeon E5640 scores 3303 versus the Pentium Gold’s 3285, a delta of 0.5%. In Cinebench R15 multi-core, the Xeon scores 332 versus 330, a 0.6% advantage.

Q: Does the Pentium Gold have a higher clock speed?

A: Yes, the Pentium Gold G5500 has a base clock of 3.80 GHz, while the Xeon E5640 has a base clock of 2.67 GHz and a boost clock of 2.93 GHz.

Q: Which processor supports faster memory technology?

A: The Pentium Gold G5500 supports DDR4 memory with a dual-channel bus and a listed bandwidth of 38.4 GB/s, while the Xeon E5640 supports DDR3 with a triple-channel bus.

Q: Is there any difference in integrated graphics?

A: Yes, the Pentium Gold G5500 includes integrated UHD Graphics 630, while the Xeon E5640 has no integrated graphics.

Q: Which processor has a lower power draw?

A: The Pentium Gold G5500 has a TDP of 54 W, which is lower than the Xeon E5640’s 80 W TDP.

Head-to-Head Benchmarks

The head-to-head results are a study in consistency. Across five Cinebench tests, the Intel Xeon E5640 wins every time, but the victory margins are incredibly tight. In Cinebench R15 multi-core, the Xeon scores 332 against the Pentium Gold’s 330, a 0.6% lead. The story repeats in Cinebench R20 multi-core, where the Xeon scores 1387 versus 1379, again a 0.6% difference. The multi-core trend continues in Cinebench R23, with the Xeon scoring 3303 against the Pentium Gold’s 3285, a 0.5% margin.

Single-core tests follow the same pattern. In Cinebench R20 single-core, the Xeon scores 195, and the Pentium Gold scores 194, a 0.5% lead for the Xeon. In Cinebench R23 single-core, the Xeon scores 466, and the Pentium Gold scores 463, a 0.6% advantage. The fact that the Xeon wins these single-core tests despite having a 1.13 GHz lower base clock is significant. It suggests that the Westmere architecture’s single-core performance, even at a lower frequency, is slightly more efficient than Coffee Lake’s at a higher frequency, at least in this specific benchmark suite.

The average benchmark score reinforces this parity. The Xeon E5640 has an average score of 1137, while the Pentium Gold G5500 sits at 1130. This 7-point difference is minuscule and places both processors in the same performance class. Their nearest rivals also overlap, with the Xeon’s rivals including the Intel Core i5-2550K and AMD Athlon Silver PRO 3125GE, while the Pentium Gold’s rivals include the Intel Core i3-4370 and Intel Core i5-4690T. The data shows that, for all intents and purposes, these two CPUs deliver nearly identical Cinebench performance.

Specification Differences

The specification sheet highlights the generational divide between these two processors. The most obvious difference is in core count: the Xeon E5640 has 4 cores and 8 threads, while the Pentium Gold G5500 has 2 cores and 4 threads. Clock speeds are also starkly different, with the Xeon’s base clock of 2.67 GHz and boost clock of 2.93 GHz contrasting with the Pentium Gold’s fixed 3.80 GHz base clock and no boost clock listed.

The process node is a clear differentiator. The Xeon uses a 32 nm process, while the Pentium Gold uses a 14 nm process. This leads to a significant difference in die size, with the Xeon measuring 239 mm² and the Pentium Gold measuring 126 mm². The transistor count also differs, with the Xeon having 1,170 million transistors, while the Pentium Gold’s count is not listed.

Cache allocation shows the Xeon’s server heritage. Both have 64 KB L1 and 256 KB L2 per core, but the Xeon’s 12 MB shared L3 cache dwarfs the Pentium Gold’s 4 MB shared L3 cache. Memory support is another major split: the Xeon uses triple-channel DDR3, while the Pentium Gold uses dual-channel DDR4 with a specified bandwidth of 38.4 GB/s. The Xeon’s memory bandwidth is not listed.

Platform features differ entirely. The Xeon uses Intel Socket 1366 and supports PCIe Gen 2, while the Pentium Gold uses Intel Socket 1151 and supports PCIe Gen 3 with 16 lanes. The Pentium Gold includes integrated UHD Graphics 630, while the Xeon has no integrated graphics. TDP also varies, with the Xeon rated at 80 W and the Pentium Gold at 54 W. The Xeon is a server/workstation part, while the Pentium Gold is a desktop part, and the Xeon has a launch MSRP of $75, which is the only price data available. Both processors are end-of-life and have locked multipliers.