I used my CPU and GPU and I got different results. I have an NVIDIA GeForce GTX 750 Ti (I’m not sure if that says anything about performance or if my PC just calls it that but its a 4k graphics card for gaming)
my best GPU time was 2:53.13 and I couldn’t get my 4 core CPU time to go under 4 minutes
but my GPU times were:
3:00.17 (for full screen at once)
half of 1080p screen test 480p by 540p test results: GPU
test 1 2:53.59
Half of 1080p screen test 960 by 540p test results:
2:55
480p by 270p screen test
2:53.38
240p by 270p screen test
2:53.13
240p by 135p screen test
2:59.40
120p by 135p screen test
3:14.89
120p by 68p
3:40.44