This week, Intel launched a new line of six-core Coffee Lake laptop CPUs. Today we test one of these CPUs. The Core i7-8750H is one of seven new processors from the Coffee Lake H series, which were developed for performance notebooks, workstations and gaming laptops.
The Core i7-8750H is essentially the successor to the widely used & # 39; Kaby Lake & # 39; Core i7-7700HQ, used in almost all top gaming laptops last year. I expect the i7-8750H to also be the ideal chip for gaming laptops and other powerful mobile devices. Therefore, this test is useful for anyone who wants to upgrade to a new Coffee Lake H-series system.
The main improvement of the i7-8750H lies in its number of cores: We now consider 6 cores and 12 threads, of 4 cores and 8 threads in the i7-7700HQ with the same 45 W TDP. In order to bring these additional cores under the same performance envelope, Intel chose the same approach as for U-series CPUs from & # 39; Kaby Lake Refresh & # 39 ;: The base clock rate was increased from 2.8 GHz in the 7700HQ to only 2 2 GHz with reduced the 8750H.
While the base clock has been reduced, Intel is increasing single-core performance with these new 8th generation processors. The 8750H reaches a maximum of 4.1 GHz on a single core, compared to 3.8 GHz on the 7700HQ. It is also able to achieve the same clock rate of 4.1 GHz on two cores, 4.0 GHz on up to four cores and 3.9 GHz on up to six cores. This is a pretty big clock leap considering that the 7700HQ has been surpassed on all core 3.4 GHz workloads.
You'll also see 9MB of L3 cache in the 8750H made with Intel's 14nm ++ process, as well as Coffee Lake's desktop parts.
The i7-8750H is complemented by another hexa-core i7, the i7-8850H, which has a higher base and boost clock rate. The Core i5 line with the 8400H and 8300H models remains a four-core, eight-threaded part, while we have the new unlocked Core i9-8950HK above.
The use of the Core i9 branding is interesting here, as we have already seen that it is used with Intel 10+ Core HEDT Skylake-X CPUs. However, the i9-8950HK is only a 6-core CPU with 12 threads like the other parts of the Coffee Lake H series, but runs at higher clocks than the 8850H and an increased 12 MB L3 cache. Unlike the rest of the cast, it's also completely overclockable.
The Coffee Lake H series is rounded off by two Xeon chips for mobile workstations. Those who want to buy a gaming laptop will not see these chips in their system, but they are technically part of the new Coffee Lake range and are great for productivity-oriented premium devices. Hopefully we can hold devices with the full range of Coffee Lake H CPUs in our hands in the coming months, but now we're testing the Core i7-8750H.
Our test system is the new Gigabyte Aero 15, which we will review shortly. In addition to the 8750H, this laptop also has an Nvidia GeForce GTX 1070 Max-Q GPU, 16 GB DDR4-2666 memory, a 512 GB PCIe SSD and a 1080p 144 Hz display.
A quick note before we get to the benchmarks. Testing laptop hardware can be a little tricky, especially apple to apple, as we can't just swap components like CPU and GPU to eliminate bottlenecks and make systems identical if necessary. In the upcoming benchmarks, however, we are concentrating on the best possible comparisons.
Since the Aero 15 only has a GTX 1070 Max-Q, we are limited to the GPU in some GPU and gaming tests. However, this shows the most realistic results because the vast majority of laptops using this CPU have a discrete GPU that is no faster than a GTX 1070. Yes, you can get faster GPUs like the GTX 1080 in laptops, but they are expensive and generally not the most popular options.
For this CPU test, I made a hardware change to the Aero 15 in order to change the memory configuration from one to two channels. This laptop comes with a single 16 GB stick. However, since most of the other laptops in our diagrams use two-channel memory, I exchanged the single 16 GB stick for two 8 GB sticks at the same speed. On to the test results …