which algo is best for you on 1.68 , and what gpu's ?
Right now I am mining haven with 1.68 using gpu:
1. Asus rog rx 580 8gb ==> 1.7.0 lower hashrate (1010 vs 1050)
2. Sapphire Nitro/Pulse 570/580 8GB ==> 1.7.0 lower hashrate (8xx-9xx vs 9xx-10xx)
3. Sapphire Nitro 470/480 4GB ==> not tested, I think the result will be the same
4. Asus rog rx 480 8gb ==> not tested
5. MSI Gaming 470 4GB ==> not tested
6. XFX 470 4GB ==> not tested
what I like on v1.7.0 is a lot stable compared to 1.6.8, but the hashrate is lower.
Thanks doctor
4gb ellesmere cards are better on 170, only the 8Gb cards do that magical hashrate game.
On previous versions you had sometimes to wait for a few hours to get all cards hashing at for example 1100hs, and even then sometimes they never reached to that maximum.
For some the gpu-z tricks worked, for some not. I managed to make that hashrate 90% stable on 170, so no need to start the miner X times to maybe reach a maximum hashrate, and no need for gpu-z tricks.
So you get a little lower hashing speed, but it is much more stable.