Intel Core i5-7500T vs Intel Core i5-10310Y vs Intel Core i7-7820HQ

Intel Core i5-7500T

The Intel Core i5-7500T is a power efficient desktop quad-core based on the Kaby Lake architecture. It was announced early 2017 and offers four cores and no HyperThreading (only 4 threads). The CPU clocks between 2.7 and 3.3 GHz. The integrated Intel HD Graphics 630 graphics card offers 24 EUs clocked at 350 to 1100 MHz. The TDP is specified at only 35 Watt and therefore even lower than mobile HQ quad cores (45 Watt). Thats why the CPU is also used in some laptops.

Intel Core i5-10310Y

The Intel Core i5-10310Y is a extremely power efficient quad-core SoC for small laptops and tablets based on the Comet Lake (CML-Y) generation and was announced in August 2019. Compared to the similar Amber Lake processors (e.g. Core i7-8500Y), the only difference are two additional cores in the top models (except i3-10110Y). The processor cores are clocked between 1.1 and 4.1 GHz (all 4 cores 2.8 GHz max). Thanks to HyperThreading 8 threads can be used. Compared to the faster i7-10510Y, the level 3 cache is reduced to 6 MB and the clock rates are lower.

More information on Comet Lake and all the models and articles on it can be found here.

Performance

While we have not tested a single system built around the 10310Y as of August 2023, it's realistic to expect the chip to be about half as fast as the Core i5-10210U (Comet Lake, 4 cores, 8 threads, up to 4.2 GHz) in multi-thread workloads. Those 4 cores of the 10310Y are set to be very much constrained by the low TDP target leading to high DPC latencies and generally unresponsive system behaviour no matter the activity.

The integrated graphics adapter is still the same as in the previous generations. It should be still called Intel UHD Graphics 615 and clock from 300 - 1050 MHz in the i5. Furthermore, the SoC integrates a VP9 and H.265 de- and encoder.

The chip is now produced in the 14nm++ process (Amber Lake Y was 14nm+) but not 10nm like Ice Lake Y. The TDP is specified at 7 Watts but can be varied from 5.5 to 9 Watt from the manufacturer (cTDP up/down) resulting in different performance (especially Turbo durations).

Intel Core i7-7820HQ

The Intel Core i7-7820HQ is a fast quad-core processor for notebooks based on the Kaby Lake architecture and was announced in January 2017. It is the second fastest model of the consumer series at the time of the announcement. Only the i7-7920HQ and Xeon E3-1535M v6 are faster. Besides four cores including Hyper-Threading support running at 2.9 - 3.9 GHz (4 cores up to 3.5 GHz, 2 cores up to 3.7 GHz), the processor is also equipped with the HD Graphics 630 GPU as well as a dual-channel memory controller (DDR3L-1600/DDR4-2400). It is manufactured in a 14nm process with FinFET transistors.

Architecture

Intel basically uses the same micro architecture compared to Skylake, so the per-MHz performance does not differ. The manufacturer only reworked the Speed Shift technology for faster dynamic adjustments of voltages and clocks, and the improved 14nm process allows much higher frequencies combined with better efficiency than before.

Performance

Due to the higher clock speeds, the performance of the i7-7820HQ is slightly faster than the old Skylake top model Core i7-6920HQ (2.9 - 3.8 GHz). The performance is sufficient even for very demanding tasks and on par with powerful desktop quad-core processors.

Graphics

The integrated Intel HD Graphics 630 has 24 Execution Units (similar to previous HD Graphics 530) running at 350 - 1100 MHz. The performance depends a lot on the memory configuration; it should be comparable to a dedicated Nvidia GeForce 920M in combination with fast DDR4-2133 dual-channel memory.

Contrary to Skylake, Kaby Lake now supports hardware decoding for H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors, which were announced in January, should also support HDCP 2.2.

Power Consumption

The chip is manufactured in an improved 14nm process with FinFET transistors, which improves the efficiency even further. Intel still specifies the TDP with 45 Watts, but it can also be reduced to 35 Watts by the notebook manufacturers (cTDP down). This will obviously affect the performance, because the Turbo Boost cannot be maintained for longer periods.