Intel Celeron N3160 vs Intel Core i7-7660U

Intel Celeron N3160

The Intel Celeron N3160 is a quad-core SoC for entry-level notebooks, which has been announced in early 2016. It is clocked at 1.6 - 2.24 GHz (Burst) and part of the Braswell platform. It is manufactured in a modern 14-nm process (P1273) with FinFETs. In addition to the four CPU cores, the SoC offers a DirectX 11.2-capable GPU as well as a DDR3L Memory Controller (2x 64 bit, 25.6 GB/s). Compared to the predecessor Celeron N3150, the N3160 has a 160 MHz higher Burst clock.

Architecture

The processor cores are based on the Airmont architecture, which is basically a slightly modified shrink of the previous Silvermont core. While performance per clock has not been improved, the more efficient 14 nm process may lead to a better utilization of the CPU Burst (alias Turbo Boost) and therefore a somewhat higher performance in certain situations. The per-MHz performance is still much lower compared to the more expensive Core series (e. g. Broadwell).

Performance

With 4 CPU cores and a clock between 1.6-2.24 GHz, the technical specifications are similar to the previous Celeron N2930, so the processor performance is only slightly better. This means the processor is well-suited for everyday tasks (office, browsing) and even light multi-tasking should be no problem.

Graphics

The HD Graphics (Braswell) is based on the Intel Gen8 architecture, which supports DirectX 11.2 and is also found in the Broadwell series (e.g. HD Graphics 5300). With 12 EUs (Execution Units) and a clock speed of up to 640 MHz, however, the GPU performance is much lower. On average, the GPU is almost twice as fast as the HD Graphics (Bay Trail), so its a bit slower than the older HD Graphics 4000. Only older and simpler titles like Counter Strike: GO will run smoothly. The chip still includes an advanced video unit with support for 4K/H.265 video acceleration.

Power Consumption

The entire SoC is rated at an TDP of 6 watts (SDP 4 watts). Thus, the chip can usually be cooled passively.

Intel Core i7-7660U

The Intel Core i7-7660U is a fast dual-core SoC for notebooks and Ultrabooks based on the Kaby Lake architecture and was announced in January 2017. The CPU has two processor cores clocked at 2.5-4 GHz (two cores up to 3.8 GHz). The processor can execute up to four threads simultaneously thanks to Hyper Threading. It is also equipped with an Intel Iris Plus Graphics 640 GPU with 64 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 the Core i7-7600U, the 7660 does have a higher single-core Turbo of 4 GHz (+100 MHz), but a lower dual-core Turbo (-100 MHz) and a lower base frequency (-300 MHz). However, the CPU part can also use the 64 MB eDRAM as L5 cache.

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

At 2.5-4 GHz, the Core i7-7660U has a slightly lower frequency (except for the single-core Turbo) compared to the Core i7-7600U, but the CPU part can also use the 64 MB eDRAM, so the performance should be similar.

Graphics

The integrated Intel Iris Plus 640 Graphics is the GT3e model of the Kaby Lake GPU (Intel Gen. 9.5). It has 48 Execution Units running at 300-1050 MHz and the performance is comparable to a GeForce 920MX thanks to fast eDRAM cache. However, there aren't any significant improvements compared to the old Iris Pro 540, 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 still specifies the TDP with 15 Watts, which is typical for ULV chips. Depending on the usage scenario, the TDP can vary between 7.5 (cTDP Down) and 25 Watts.