My time:
CPU: Intel i7 3770k 4.1Ghz
GPU: Nvidia GTX 970
OS: Windows 10 64bit
Tile GPU CPU
8x8 - 05:14
64x64 03:58 05:22
96x96 02:24 -
128x128 01:52 05:32
256x256 01:26 -
480x270 01:19 -
480x540 01:19 -
512x512 01:21 17:23
550x550 01:20 -
575x575 01:20 -
600x600 01:21 -
960x270 01:21 -
1024x1024 01:32 -
Best Times:
GPU - 01:19 (480x270 | 480x540)
CPU - 05:14 (8x8)