A noter que si vous atteignez le power limit, le gsync part en couille (stuttering) (mais pas avec les vieux drivers 385.69 ou il y a du tearing mais pas de stuttering). Mon test:
As you know, I'm using my machine for both mining and gaming.
As for mining we reduce the power limit to avoid drawing to much power from the wall
and to protect the graphic cards.
Well, that is the root cause of the gsync tearing and chopiness.
At the moment the power limit is hit, the all SLI Gsync falls appart and it turns like to be a non vsync mode
on a super bad machine, even if fraps stats are not that bad, it is visually horrible.
Below some test showing issue appearing at 70% power limit.
I will also test the limit with the founder edition bios (I did limit more the power for the inno3x x3 bios as they push the Frequencies and so for the voltage and so the power usage).
Drivers 390.77 power limit MSI afterburner v 4.4.2.12263 dated 2017_12_14 (ddr4 interleaving set to die (distributed))
default power magagement mode: optimal power.
2 GTX 1070 in SLI using High Bandwith bridge.
inno3d x3 bios (86.04.50.00.1C)
GPU 1620 MHz, Boost 1823 MHz, GDDR5 2052 MHz)
ichill1070_86_04_50_00_1C_micron.rom
power limit set to 100%. Machine wall power usage at start training place: 440 W
2018-03-11 10:23:07 - Overwatch
Frames: 3508 - Time: 25078ms - Avg: 139.884 - Min: 137 - Max: 141
smooth, no tearing.
power limit set to 90%. Machine wall power usage at start training place: 440 W
2018-03-11 10:29:55 - Overwatch
Frames: 3283 - Time: 23500ms - Avg: 139.702 - Min: 135 - Max: 141
smooth, no tearing.
power limit set to 80%. Machine wall power usage at start training place: 435 W
2018-03-11 10:32:19 - Overwatch
Frames: 3556 - Time: 25422ms - Avg: 139.879 - Min: 138 - Max: 141
smooth, no tearing.
power limit set to 70%. Machine wall power usage at start training place: 400 W
2018-03-11 10:34:36 - Overwatch
Frames: 3217 - Time: 23141ms - Avg: 139.017 - Min: 134 - Max: 141
tears and choppy
*******************************************************************************
founder edition + micron patch (86.04.50.00.60): (GPU 1506 MHz, Boost 1683 MHz, GDDR5 2002 MHz)
Asus.GTX1070.8192.161020_2.rom
power limit set to 100%. Machine wall power usage at start training place: 440 W
2018-03-11 11:01:56 - Overwatch
Frames: 3538 - Time: 25281ms - Avg: 139.947 - Min: 139 - Max: 141
smooth, no tearing.
power limit set to 90%. Machine wall power usage at start training place: 425 W
2018-03-11 11:04:05 - Overwatch
Frames: 3538 - Time: 25328ms - Avg: 139.687 - Min: 137 - Max: 141
tears but smooth
power limit set to 80%. Machine wall power usage at start training place: 396 W
2018-03-11 11:06:30 - Overwatch
Frames: 3420 - Time: 24500ms - Avg: 139.592 - Min: 137 - Max: 142
tears and choppy
*******************************************************************************
founder edition + micron patch (86.04.50.00.60): (GPU 1506 MHz, Boost 1683 MHz, GDDR5 2002 MHz)
Asus.GTX1070.8192.161020_2.rom
drivers 385.69 default power magagement mode: optimal power.
power limit set to 100%. Machine wall power usage at start training place: 442 W
2018-03-11 11:35:28 - Overwatch
Frames: 3449 - Time: 24641ms - Avg: 139.970 - Min: 139 - Max: 141
smooth, no tearing.
power limit set to 90%. Machine wall power usage at start training place: 427 W
2018-03-11 11:37:08 - Overwatch
Frames: 3678 - Time: 26297ms - Avg: 139.864 - Min: 138 - Max: 141
smooth, small tearing.
power limit set to 80%. Machine wall power usage at start training place: 398 W
2018-03-11 11:38:59 - Overwatch
Frames: 3626 - Time: 25968ms - Avg: 139.633 - Min: 136 - Max: 142
smooth, bad tearing.
power limit set to 70%. Machine wall power usage at start training place: 372 W
2018-03-11 11:41:42 - Overwatch
Frames: 3601 - Time: 25765ms - Avg: 139.763 - Min: 137 - Max: 141
smooth, bad tearing.
power limit set to 60%. Machine wall power usage at start training place: 342 W
2018-03-11 11:44:34 - Overwatch
Frames: 3533 - Time: 25297ms - Avg: 139.661 - Min: 135 - Max: 141
smooth, bad tearing.
power limit set to 50%. Machine wall power usage at start training place: 310 W
2018-03-11 11:46:23 - Overwatch
Frames: 3280 - Time: 24078ms - Avg: 136.224 - Min: 111 - Max: 141
smooth, bad tearing.
So for some reason the drivers v385.69 is less affected by the power limit,
so the new way of doing power limitation is making gsync choppy.
Would be good if other users suffering from gsync with new drivers pushes the power limit higher
to see if that solves the problem at their side as well (tearing and stuttering).
Message édité par Xixou2 le 20-03-2018 à 18:22:10
