Intel Core i7-10875H vs Intel Core i9-9900T Comparison

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core i7-10875H boosts up to 5.10 GHz, while the Intel Core i9-9900T tops out at 4.40 GHz. The mobile chip holds a 0.70 GHz advantage in maximum frequency.

Q: How do the two chips compare in raw multi-threaded rendering performance?

A: In Cinebench R23 multi-core, the Core i7-10875H scores 12234 versus 11091 for the Core i9-9900T, a 9.3% lead. The same pattern holds in Cinebench R20 multi-core, where the i7-10875H records 5138 against 4658.

Q: Does the desktop chip win any benchmark categories?

A: Yes. The Core i9-9900T wins both Geekbench tests. It scores 7298 in multi-core versus 6511 for the i7-10875H (a 12.1% advantage) and 1452 in single-core versus 1384 (a 4.9% lead).

Q: What are the power envelopes of these two CPUs?

A: The Core i9-9900T is rated at 35W TDP, while the Core i7-10875H is rated at 45W TDP. The desktop part consumes less power despite having the same 8-core, 16-thread configuration.

Q: Are both processors built on the same manufacturing process?

A: Yes, both use Intel's 14 nm process node. They also share the same 64 KB L1 cache per core and 256 KB L2 cache per core, plus 16 MB of shared L3 cache.

Q: Which chip is still in production?

A: The Core i7-10875H is listed as Active, while the Core i9-9900T is End-of-life. The i9-9900T was released in April 2019, and the i7-10875H followed in April 2020.

Architecture Differences

Both processors are built on Intel's 14 nm process and share the same core configuration: 8 cores and 16 threads. They also have identical cache hierarchies, with 64 KB of L1 per core, 256 KB of L2 per core, and 16 MB of shared L3. The similarities end there, as the two chips come from different architectural families and target different market segments.

The Core i9-9900T belongs to the Coffee Lake generation, specifically the Coffee Lake-R refresh. It is a desktop processor using the Intel Socket 1151, and its die size measures 180.3 mm². The Core i7-10875H, by contrast, is a Comet Lake-H mobile part, built on the newer Comet Lake architecture. It uses the Intel BGA 1440 socket, which is designed for laptops, and its die is slightly smaller at 177.5 mm².

Clock behavior separates the two significantly. The Core i9-9900T has a base clock of 2.10 GHz and a boost clock of 4.40 GHz. The Core i7-10875H starts higher at 2.30 GHz base and reaches 5.10 GHz boost. This 0.70 GHz boost advantage for the mobile chip is substantial and explains much of its lead in frequency-sensitive workloads.

Power delivery is another differentiator. The Core i9-9900T is rated at 35W TDP, which is unusually low for an 8-core desktop part. The Core i7-10875H carries a 45W TDP rating. Both are locked processors, so neither offers an unlocked multiplier for overclocking.

Memory support is similar in type. Both use DDR4 memory with a dual-channel bus, and neither supports ECC. However, the measured memory bandwidth differs: the Core i9-9900T delivers 42.7 GB/s, while the Core i7-10875H reaches 46.9 GB/s. PCIe support is identical, with Gen 3 and 16 lanes from the CPU.

Integrated graphics are present on both, but with different branding. The Core i9-9900T uses UHD Graphics 630, while the Core i7-10875H lists simply UHD Graphics. Both are desktop and mobile respectively, and the production status differs: the i9-9900T is end-of-life, whereas the i7-10875H remains active.

The Verdict

The benchmark data paints a clear split between these two processors. In every Cinebench test, the Core i7-10875H wins. The margins are consistent, ranging from 9.3% to 9.8% across R15, R20, and R23, in both single-core and multi-core runs. The mobile chip's higher boost clock of 5.10 GHz gives it a decisive edge in all rendering workloads, and its 45W TDP allows it to sustain that performance advantage.

The Core i9-9900T, however, takes both Geekbench tests. Its multi-core score of 7298 beats the i7-10875H's 6511 by 12.1%, and its single-core score of 1452 beats 1384 by 4.9%. This suggests that in Geekbench's specific workload mix, the desktop chip's architecture or memory configuration provides an advantage that Cinebench does not capture.

For users who prioritize rendering performance in Cinebench-style applications, the Core i7-10875H is the better choice. It wins six of the eight head-to-head benchmarks and posts double-digit leads in some Cinebench multi-core tests. For users who value Geekbench performance, the Core i9-9900T is the pick, as it wins both Geekbench categories by meaningful margins.

The data also shows that the i9-9900T achieves its wins at a lower 35W TDP compared to the i7-10875H's 45W. This makes the desktop part more power-efficient in the benchmarks where it leads. The overall average benchmark scores are close, with the i9-9900T at 3499 and the i7-10875H at 3432, a difference of less than 2%. The percentile rankings are nearly identical as well, at 55 for the i9-9900T and 54 for the i7-10875H.

Specification Differences

The two processors diverge in several key specification areas. The Core i9-9900T has a base clock of 2.10 GHz, while the Core i7-10875H starts at 2.30 GHz. The boost clocks differ even more, with the i9-9900T reaching 4.40 GHz and the i7-10875H hitting 5.10 GHz.

TDP ratings separate them as well: the i9-9900T is rated at 35W, the i7-10875H at 45W. The sockets are incompatible, with the i9-9900T using Intel Socket 1151 and the i7-10875H using Intel BGA 1440. The architectures differ, with Coffee Lake-R on the desktop part and Comet Lake-H on the mobile part.

Die sizes are close but not identical: 180.3 mm² for the i9-9900T and 177.5 mm² for the i7-10875H. Memory bandwidth favors the mobile chip at 46.9 GB/s versus 42.7 GB/s. The integrated graphics are branded differently, with UHD Graphics 630 on the i9-9900T and UHD Graphics on the i7-10875H.

Market segments differ as expected: the i9-9900T is a desktop part, the i7-10875H is mobile. Production status also differs, with the i9-9900T marked End-of-life and the i7-10875H Active. Release dates are about a year apart, with the i9-9900T launching in April 2019 and the i7-10875H in April 2020. Launch MSRP for the i9-9900T is $423, and for the i7-10875H it is $450.

Head-to-Head Benchmarks

The Cinebench suite is a complete sweep for the Core i7-10875H. In Cinebench R15 multi-core, the mobile chip scores 1233 against 1117 for the i9-9900T, a 9.4% margin. The single-core R15 test shows 174 versus 157, a 9.8% lead. Moving to Cinebench R20, the i7-10875H posts 5138 in multi-core versus 4658, a 9.3% advantage, and 725 in single-core versus 657, another 9.4% gap.

Cinebench R23 follows the same trajectory. The i7-10875H scores 12234 in multi-core, beating the i9-9900T's 11091 by 9.3%. In single-core, the i7-10875H records 1727 against 1565, a 9.4% lead. Across all six Cinebench tests, the i7-10875H's advantage is remarkably consistent, hovering between 9.3% and 9.8%. This uniformity suggests the higher boost clock of 5.10 GHz provides a steady performance uplift across the entire test suite.

The Geekbench results flip the narrative. The Core i9-9900T wins multi-core with a score of 7298, while the i7-10875H manages 6511. That is a 12.1% swing in favor of the desktop chip. In single-core, the i9-9900T scores 1452 versus 1384, a 4.9% win. These are not marginal victories; the multi-core gap of nearly 800 points is the largest head-to-head margin in the entire comparison.

The overall win tally favors the i7-10875H, which takes six of the eight head-to-head benchmarks. The i9-9900T wins two. Average benchmark scores are close, with the i9-9900T at 3499 and the i7-10875H at 3432. The i9-9900T's nearest rival, the Intel Xeon E-2176G, sits at 3502, just 0.1% ahead. The i7-10875H's closest competitor, the Intel Core i9-9880H, matches it at 3433, a 0% delta. These figures show that while the two chips diverge in specific tests, they occupy nearly the same tier in the overall performance hierarchy.