Intel Core i7-8086K vs Intel Xeon Silver 4116 Comparison

This comparison pits two very different Intel processors against each other: the Core i7-8086K, a desktop part built for high clock speeds, and the Xeon Silver 4116, a server chip designed for core-heavy workloads. The benchmark data shows a clear, consistent winner across every test, but the reasons behind that result and the platform implications are what matter for a builder. While the i7-8086K is an unlocked, end-of-life desktop processor, the Xeon Silver 4116 is a locked, server-grade chip with double the cores. The performance gap is uniform, and the architecture and platform choices are fundamentally different.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Xeon Silver 4116 has 12 cores and 24 threads, while the Intel Core i7-8086K has 6 cores and 12 threads. This means the Xeon has exactly double the core and thread count of the Core i7.

Q: How does the single-core performance compare?

A: Despite the Core i7-8086K's much higher boost clock of 5.00 GHz, the Xeon Silver 4116 wins every single-core benchmark. In Cinebench R23 single-core, the Xeon scores 1822 versus the Core i7's 1690, a delta of -7.2% for the i7.

Q: What is the difference in their memory support?

A: Both support DDR4 memory, but the Core i7-8086K uses a dual-channel memory bus with a bandwidth of 42.7 GB/s and does not support ECC memory. The Xeon Silver 4116 supports ECC memory, but its memory bus and bandwidth are not specified in the data.

Q: Are these processors from the same generation?

A: No. The Core i7-8086K is from the Coffee Lake generation (Core i7 40th), released in 2018. The Xeon Silver 4116 is from the Skylake-SP generation, released a year earlier in 2017. Both use a 14 nm process node from Intel.

Q: Do both processors have integrated graphics?

A: No. The Core i7-8086K includes UHD Graphics 630, while the Xeon Silver 4116 has no integrated graphics listed. This means the Xeon will require a discrete GPU for any display output.

Q: Which processor has a higher average benchmark score?

A: The Core i7-8086K has a slightly higher average benchmark score of 3800, compared to the Xeon Silver 4116's 3733. However, both sit at the 56th percentile of all CPUs.

Architecture Differences

The architectural split between these two is stark. The Core i7-8086K is built on the Coffee Lake architecture, a refinement of the mainstream desktop design, while the Xeon Silver 4116 uses the Skylake-SP architecture, which is the foundation for Intel's scalable server platforms. This is not a minor tweak; it is a fundamental difference in design goals.

The most significant difference lies in core and cache configuration. The Core i7-8086K has 6 cores and 12 threads, with a 12 MB shared L3 cache and 256 KB of L2 cache per core. The Xeon Silver 4116 doubles the core count to 12 cores and 24 threads, and it also increases the L3 cache to 16.5 MB shared. The L2 cache is a major divergence: the Xeon has a massive 1 MB of L2 cache per core, which is four times larger than the Core i7's 256 KB per core. Both share the same 64 KB L1 cache per core.

The process node is identical at 14 nm, and both are manufactured by Intel. However, the transistor count is only listed for the Xeon, at 8,000 million. The Core i7's transistor count is not provided. The sockets are also completely different: the Core i7 uses Intel Socket 1151, while the Xeon uses Intel Socket 3647. This alone dictates that they cannot be used in the same motherboards.

Memory architecture further separates them. The Core i7-8086K uses a dual-channel memory bus with a listed bandwidth of 42.7 GB/s and does not support ECC memory. The Xeon Silver 4116 supports ECC memory, which is critical for server reliability, but its memory bus and bandwidth figures are not listed. The Core i7 also includes integrated UHD Graphics 630, while the Xeon has no integrated graphics at all. The Core i7 has an unlocked multiplier for overclocking, whereas the Xeon's multiplier is locked.

Head-to-Head Benchmarks

The benchmark results are remarkably one-sided. The Intel Xeon Silver 4116 wins all six head-to-head tests, with a consistent performance advantage over the Core i7-8086K. The delta is nearly identical across the board, hovering around -7.2% or -7.3% for the Core i7 in every single test.

In Cinebench R15, the Xeon Silver 4116 scores 1301 in multi-core, beating the Core i7's 1206 by a margin that registers as -7.3% for the Core i7. The single-core test is tighter but still a win for the Xeon: 183 versus 170, a -7.1% delta for the Core i7. Moving to Cinebench R20, the Xeon again wins multi-core with 5421 against 5029 (-7.2%), and single-core with 765 against 709 (-7.3%).

The pattern continues in Cinebench R23, the most demanding of the tests. The Xeon Silver 4116 scores 12908 in multi-core, which is 933 points higher than the Core i7's 11975, a -7.2% difference. In single-core, the Xeon's 1822 beats the Core i7's 1690, again a -7.2% delta. This consistency is notable. The Xeon's advantage is not specific to one type of workload; it is a uniform lead across all rendering tests.

What is particularly striking is that the Core i7-8086K loses the single-core tests despite its 5.00 GHz boost clock, which is significantly higher than the Xeon's 3.00 GHz. This suggests the Xeon's architecture, or perhaps its larger L2 cache, provides a per-clock efficiency advantage that overcomes the raw clock speed deficit. The data does not explain why, but the result is unambiguous.

Specification Differences

The specification sheets for these two processors highlight their different purposes. The most obvious difference is in core count: 6 cores for the Core i7-8086K versus 12 cores for the Xeon Silver 4116. Threads follow suit, with 12 and 24 respectively.

Clock speeds are a major point of divergence. The Core i7-8086K has a base clock of 4.00 GHz and a boost clock of 5.00 GHz. The Xeon Silver 4116 is much slower on paper, with a base clock of 2.10 GHz and a boost clock of 3.00 GHz. However, the benchmark results show that the Xeon's lower clocks do not translate to lower actual performance in these tests.

The TDP figures are also interesting. The Core i7-8086K has a TDP of 95 watts, while the Xeon Silver 4116 has a TDP of 85 watts. This means the Xeon, with twice the cores, is rated for a lower power draw than the Core i7. The Core i7 has an unlocked multiplier, while the Xeon's is locked.

Other differences are more about platform support. The Core i7 uses Intel Socket 1151 and has 16 PCIe Gen 3 lanes (CPU only). The Xeon uses Intel Socket 3647, and its PCIe configuration is not listed. The Core i7 has integrated UHD Graphics 630 and does not support ECC memory. The Xeon has no integrated graphics but does support ECC memory. The Core i7 has a listed launch MSRP of $425, while the Xeon's price is not provided. The Core i7 is marked as end-of-life, while the Xeon's production status is not specified.

Where Each One Wins

Given the benchmark data, the Intel Xeon Silver 4116 is the clear winner in every measured category. It wins all six Cinebench tests, covering both single-core and multi-core workloads in R15, R20, and R23. This is a comprehensive sweep. For any workload that relies on rendering performance, whether it is single-threaded or multi-threaded, the Xeon Silver 4116 provides better results.

The Xeon's advantage is consistent, but the margin is not huge. A delta of about 7% means that in a long render, the Xeon will finish noticeably sooner, but it is not a night-and-day difference. The Xeon also offers ECC memory support, which is a critical feature for data integrity in server and workstation environments. Its larger L2 cache per core and bigger shared L3 cache may contribute to its performance lead.

The Core i7-8086K does have some advantages, but they are not reflected in the benchmark scores. It has integrated graphics, so it can run without a discrete GPU. It has an unlocked multiplier, allowing for overclocking potential, though the data does not include any overclocked results. It also has a higher boost clock of 5.00 GHz, which could theoretically help in lightly threaded tasks, but the data shows the Xeon still wins in single-core tests. The Core i7 is also a desktop part, so it can be paired with standard consumer motherboards and memory, whereas the Xeon requires a server platform.

The Verdict

The data is unambiguous: the Intel Xeon Silver 4116 outperforms the Intel Core i7-8086K in every benchmark recorded. Across Cinebench R15, R20, and R23, in both single-core and multi-core tests, the Xeon holds a steady lead of roughly 7%. If the only metric is raw benchmark performance, the Xeon Silver 4116 is the better processor.

Who should pick the Xeon Silver 4116? Anyone building a server or workstation where ECC memory support is a requirement, and where the 12-core, 24-thread configuration can be fully utilized. The consistent performance advantage in both single and multi-threaded tests makes it a solid choice for rendering tasks, and its lower TDP of 85 watts compared to the Core i7's 95 watts is a point in its favor for dense systems.

Who should pick the Core i7-8086K? A builder looking for a desktop processor with integrated graphics and an unlocked multiplier for overclocking. The Core i7 is an end-of-life product, but it offers a 5.00 GHz boost clock and the ability to run without a discrete GPU. Its dual-channel memory and 42.7 GB/s bandwidth are standard for consumer platforms. The data shows it loses in pure performance, but its platform characteristics are completely different.

If you are building a new system and do not require ECC memory or a server platform, the Core i7-8086K's higher clock speeds and overclocking potential might be attractive. However, the benchmark results are clear: the Xeon Silver 4116 delivers better Cinebench performance across the board. The choice comes down to platform needs versus raw benchmark scores. The Xeon wins the performance battle, but the Core i7 wins on desktop flexibility.