AMD Radeon RX 560 (Laptop) vs NVIDIA GeForce GTX 1080 (Desktop) vs NVIDIA GeForce GTX 1070 SLI (Laptop)

AMD Radeon RX 560 (Laptop)

The AMD Radeon RX 560 for laptops (RX 560M) is a mid-range Polaris 11 / 21 gaming graphics card for laptops. It was first shown at CES 2017 in the Lenovo Legion Y520 as the "AMD RX 560M" with up to 4 GB GDDR5 VRAM. As the desktop RX 560 it can be based on the Polaris 21 and 11 chip (RX 560 and RX 460) with 986 or 1024 shaders. The performance should be similar to the desktop variants, with slightly reduced clock speeds.

More information on the Polaris architecture and its features can be found here.

NVIDIA GeForce GTX 1080 (Desktop)

The Nvidia GeForce GTX 1080 is a fast desktop graphics card based on the Pascal architecture. It was announced in May 2016 and offers all 2,560 shader of the used GP104 chip. Furthermore, the GPU is coupled with 8 GB GDDR5X graphics memory using a 256 Bit interface (10 GHz, 320 GB/s). The chip is manufactured at TSMC in 16nm (FinFET). The TDP is specified at 180 Watt and therefore slightly higher than the predecessor, the GTX 980 with 165 Watt.

NVIDIA GeForce GTX 1070 SLI (Laptop)

The Nvidia GeForce GTX 1070 SLI for laptops is a combination of two GTX 1070 graphics cards in SLI mode. Each card renders one frame at a time (AFR mode) but depends for most games on a good profile in the driver. Therefore, the performance can range from no gains over a single GTX 1070 to up to 90% faster performance. In most games with SLI support, the GTX 1070 SLI is therefore faster than a single GTX 1080. However, sometimes the combination also suffers from micro-stuttering.

The technical details of the card are identical to a single GTX 1070 (see for more information) and the power consumption is doubled. Therefore, the 1070 SLI combination is only found in huge clunky laptops.