Intel Core i5-8257U vs Intel Core i7-1195G7

Intel Core i5-8257U

The Intel Core i5-8257U is a quad-core SoC for notebooks based on the Coffee Lake architecture that was announced in the new entry level MacBook Pro 13 in mid 2019. Compared to its predecessor, the CPU is now a quad-core with Hyperthreading support for the execution of up to 8 threads simultaneously. The base frequency is only 1.4 GHz, but the Turbo goes all the way up to 3.9 GHz. It is also equipped with an Intel Iris Plus Graphics 645 GPU with 128 MB eDRAM, a dual-channel memory controller (DDR4) as well as VP9 and H.265 video decoding as well as encoding. The chip is still manufactured in a 14nm process with FinFET transistors.

Compared to faster Core i7-8557U model with eDRAM and 15 Watts, the i5-8257U only features 6 MB smart cache and the slowest clock of the Iris Plus GPU.

Architecture

Intel basically uses the same micro architecture compared to Kaby Lake, 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

Thanks to the relative high Turbo Boost clock, the single thread performance should be very good, but still behind the faster i7 model. The short burst all core performance is clearly better compared to the old dual core predecessors thanks to the additional cores. In sustained workloads, the performance is usually limited by the TDP and cooling. In these workloads the difference to the Core i7 should be also smaller.

Graphics

The integrated Intel Iris Plus 645 Graphics is the GT3e model of the Coffee Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1050 MHz and the performance is comparable to a GeForce 930M or 940MX thanks to fast eDRAM cache. However, there aren't any significant improvements compared to the old Iris Plus 650, so modern games can often not be played smoothly or only at the lowest or medium settings, respectively.

Contrary to Skylake, Kaby lake now also supports H.265/HEVC Main 10 with a 10-bit color depth as well as Google's VP9 codec. The dual-core Kaby Lake processors 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 specifies the TDP with 15 Watts and therefore suited for thin and light laptops.

Intel Core i7-1195G7

The Intel Core i7-1195G7 is a quad-core SoC from the Tiger Lake-UP3 product family designed for thin laptops and Ultrabooks that was introduced in 2021. It integrates four Willow Cove processor cores (8 threads thanks to Hyper-Threading). The base clock (minimum) depends on the configured TDP and can range from 1.3 GHz (12 Watt TDP) up to 2.9 GHz (28 W). The Turbo on one core can reach up to 5 GHz (Turbo Boost 3.0). All cores can reach up to 4.6 GHz. The i7-1195G7 is part of the Tiger Lake UP3 refresh and is the fastest CPU of the Tiger-Lake U line.

Furthermore, Tiger Lake SoCs supports four lanes of PCIe 4, AI hardware acceleration, and the partial integration of Thunderbolt 4/USB 4 and Wi-Fi 6E in the chip.

The 1195G7 integrates the Intel Iris Xe graphics adapter with 96 EUs clocked at 400 - 1400 MHz. The GPU and CPU can together use the 12 MB of L3 cache.

Performance

The average 1195G7 in our database matches the Intel Core i5-10300H in multi-thread performance while, perhaps surprisingly, lagging behind the AMD Ryzen 3 5300U. The makes the i7 a decent lower mid-range chip, as of early 2022. It'll run most apps with virtually no delays or slowdowns which is what the vast majority of users wants.

Thanks to its decent cooling solution and a long-term CPU power limit of slightly more than 30 W, the VAIO SX14 VJS144X0111K is among the fastest laptops built around the 1195G7 that we know of. It can be about 40% faster in CPU-bound workloads than the slowest system featuring the same chip in our database, as of August 2023.

Power consumption

This Core i7 series chip has a default TDP of 12 W to 28 W, the expectation being that laptop makers will go for a higher value in exchange for higher performance. Either way, that's a tad too high to allow for passively cooled designs.

The i7-1195G7 is built with Intel's 3rd generation 10 nm process marketed as SuperFin for below average, as of early 2023, energy efficiency.