Intel Core i9-10900 vs Intel Core i9-10900E Comparison

The Intel Core i9-10900E and Intel Core i9-10900 are nearly identical twins on paper, sharing the same 10-core/20-thread Comet Lake design, 65W TDP, and Intel Socket 1200 platform. However, the benchmark data reveals a consistent, if modest, performance gap between the two, with the non-E variant pulling ahead in every single measured test. This analysis breaks down exactly where the differences manifest.

Head-to-Head Benchmarks

The head-to-head results are unambiguous: the Intel Core i9-10900 wins all eight benchmark comparisons. The margins, however, tell a nuanced story about where the performance advantage is concentrated.

In Cinebench R15, the i9-10900 scores 1634 versus 1622 for the i9-10900E in multi-core, a delta of -0.7%. The single-core result is similarly close at 230 versus 228, a -0.9% gap. These are essentially rounding errors in real-world usage, but they establish a pattern that holds across the entire Cinebench suite. The R20 multi-core test shows 6811 against 6759 (-0.8%), while single-core lands at 961 versus 954 (-0.7%). R23 continues the trend with multi-core at 16219 versus 16093 (-0.8%) and single-core at 2289 versus 2272 (-0.7%).

The picture shifts dramatically in Geekbench. Here, the i9-10900’s advantage widens to -4.9% in multi-core (8585 versus 8162) and -4.6% in single-core (1651 versus 1575). This is the single largest discrepancy in the entire benchmark set, suggesting that the i9-10900’s higher boost clock has a more pronounced effect on Geekbench’s workload patterns than on Cinebench’s sustained rendering tasks.

The average benchmark scores reflect this overall dominance. The i9-10900E carries an average score of 4708 across all tests, while the i9-10900 sits at 4614. The i9-10900E lands at the 59th percentile of all CPUs, while the i9-10900 sits at the 58th percentile. The i9-10900E’s nearest rivals include the Intel Core i9-11900T (deltaPct 0.5) and the Intel Core i7-6950X (deltaPct -0.5), while the i9-10900’s rivals include the Intel Core i9-9900KF (deltaPct -0.8) and the Intel Xeon W-2145 (deltaPct 0.8). Both parts are clearly in the same performance class, but the data consistently favors the standard i9-10900.

Where Each One Wins

Given that the i9-10900 wins every head-to-head test, the use-case split is less about categorical advantages and more about the magnitude of the gap in different scenarios.

For heavily threaded rendering workloads like Cinebench R15, R20, and R23 multi-core tests, the i9-10900’s advantage is present but minimal, hovering around 0.7-0.8%. In these scenarios, both CPUs will deliver nearly identical performance, and the i9-10900E is a perfectly capable choice for sustained multi-threaded productivity. The 10-core/20-thread configuration and 20 MB of shared L3 cache ensure that neither part becomes a bottleneck in content creation tasks.

The i9-10900’s clearest win comes in Geekbench, where it leads by nearly 5% in both single-core and multi-core tests. This suggests that the i9-10900 is better suited for applications that are sensitive to peak frequency bursts, such as general desktop responsiveness, lightly threaded software, and certain types of simulation work. The i9-10900E’s lower 4.70 GHz boost clock versus the i9-10900’s 5.20 GHz boost clock is the likely driver of this difference, even though both share the same 2.80 GHz base clock.

For users prioritizing maximum single-threaded performance from the Comet Lake generation, the i9-10900 is the clear pick. The i9-10900E remains a solid option for those who need the same core count and platform but can accept slightly lower peak clocks. The data shows no scenario where the i9-10900E outperforms the i9-10900; the only question is whether the sub-1% Cinebench margins matter against the ~5% Geekbench margins.

FAQ

Q: Which CPU has the higher boost clock?

A: The Intel Core i9-10900 has a boost clock of 5.20 GHz, while the Intel Core i9-10900E has a boost clock of 4.70 GHz. Both share the same 2.80 GHz base clock.

Q: Are there any benchmark tests where the i9-10900E wins?

A: No. The head-to-head data shows the i9-10900 winning all eight tests, including Cinebench R15, R20, R23 (multi-core and single-core) and Geekbench (multi-core and single-core).

Q: What is the most significant performance difference between the two?

A: The largest gap is in Geekbench single-core, where the i9-10900 scores 1651 versus 1575 for the i9-10900E, a delta of -4.6%. The multi-core Geekbench gap is nearly as large at -4.9% (8585 versus 8162).

Q: Do both CPUs have the same core and thread counts?

A: Yes, both the Intel Core i9-10900E and Intel Core i9-10900 feature 10 cores and 20 threads.

Q: What are the production statuses of these two parts?

A: The Intel Core i9-10900E is listed as "Active" in production status, while the Intel Core i9-10900 is listed as "End-of-life."

Q: How do their average benchmark scores compare?

A: The i9-10900E has an average benchmark score of 4708, while the i9-10900 has an average score of 4614. The i9-10900E sits at the 59th percentile of all CPUs, and the i9-10900 sits at the 58th percentile.

Specification Differences

The two processors differ in a small set of specifications. The most important is the boost clock: the i9-10900 reaches 5.20 GHz, while the i9-10900E tops out at 4.70 GHz. The base clock is identical at 2.80 GHz for both.

The die size is listed as 206 mm² for the i9-10900E, while no die size is provided for the i9-10900. The launch MSRP differs slightly: the i9-10900E launched at $488, and the i9-10900 launched at $483.

Production status is another differentiator. The i9-10900E remains "Active," while the i9-10900 is "End-of-life." The part numbers also differ: the i9-10900E is SRJFD, and the i9-10900 is SRH8Z.

All other specifications are identical: 10 cores, 20 threads, 65W TDP, Intel Socket 1200, dual-channel DDR4 memory support with 46.9 GB/s bandwidth, PCIe Gen 3 with 16 lanes (CPU only), and integrated UHD Graphics 630.

Architecture Differences

Both processors are built on the same Comet Lake architecture and 14 nm process node from Intel. They share the same codename, "Comet Lake," and belong to the same Core 10th Gen series.

The cache hierarchy is identical. Each core has 64 KB of L1 cache and 256 KB of L2 cache, with a shared 20 MB L3 cache across all cores. Neither part supports ECC memory, and neither has an unlocked multiplier.

The integrated graphics are the same UHD Graphics 630 in both cases. The memory controller and PCIe configuration are also identical, supporting DDR4 in dual-channel mode and PCIe Gen 3 with 16 lanes from the CPU.

The only architectural difference that can be inferred from the data is the boost clock behavior, which is a firmware or binning distinction rather than a fundamental architecture change. The i9-10900’s higher 5.20 GHz boost clock gives it the edge in single-threaded and lightly threaded workloads, while the i9-10900E’s 4.70 GHz clock is more conservative. Both parts were released on the same date, 2020-04-29, and share the same 65W TDP envelope, indicating that the performance difference is not driven by power allocation but by the maximum frequency each chip can sustain.