my GPU OC configuration suddenly unstable

[kyokoaoi]

my spec:

i7-3770 non K

GTX 1650 4GB OC VENTUS

1 TB baracuda

8 GB RAM X star and 4 GB random stick i found laying around

GIGABYTE H61M DS-2 REV 5

 

so here is the thing, i OC'd my GPU +82 on clock and +552 on mem, with this configuration there was usually no problem with my pc, until i stick that random 4 gigs of ram to my pc. the first couple of days went smoothly, no problem, the next day when i ran GTA V it suddenly then crashed and automatically rebooted  my pc but it kind of stuck on loop just constantly turning on and off. so i decided to turn off the PSU and wait for a few minutes. i turned it back on it worked, i get to my home screen but suddenly the mouse and keyboard disconnected, i tried to change the port, didnt work. i rebooted the pc then everything was just fine until OC'd my GPU again to the usual configuration. it crashed. rebooted the pc then OC'd my GPU again but this time i only add +82 and +450, and everything is working just fine. I'm just wondering  why did that happened.

[Zedbird]

Not all GPU overclocks work with all games. For example I can't run an OC when playing Control at all. That might not be the issue though. What kind of PSU do you have? Wattage and Rating? Also take that random 4gb stick of ram out. Even if it is working properly you will be in single channel not dual channel. You need use the exact same Ram stick as your other one.

[kyokoaoi]

12 minutes ago, Zedbird said:

Not all GPU overclocks work with all games. For example I can't run an OC when playing Control at all. That might not be the issue though. What kind of PSU do you have? Wattage and Rating? Also take that random 4gb stick of ram out. Even if it is working properly you will be in single channel not dual channel. You need use the exact same Ram stick as your other one.

but it was all fine running GTA V, its aerocool LUX 550 WATT 80+ bronze. even if its same speed? just checked its HYNIX the PB series. just remembered a few days ago i disabled the SysMain coz its consuming 80% disk usage

[Zedbird]

Diffrent size Ram sticks will not run in dual channel. Ram sticks will always default to the slower speed. It is best practice to use two of the exact same Ram sticks for better stability. Also you should Benchmark your GPU OC with software to determine truly if it is indeed stable. Still some games can handle an aggressive OC better then others. That's one of the reasons MSI Afterburner has diffrent profiles to save on.

[kyokoaoi]

38 minutes ago, Zedbird said:

Diffrent size Ram sticks will not run in dual channel. Ram sticks will always default to the slower speed. It is best practice to use two of the exact same Ram sticks for better stability. Also you should Benchmark your GPU OC with software to determine truly if it is indeed stable. Still some games can handle an aggressive OC better then others. That's one of the reasons MSI Afterburner has diffrent profiles to save on.

okay, thanks! but i kinda wanna play warzone, and the game idle at 7 gigs of RAM

[Zedbird]

20 minutes ago, kyokoaoi said:

okay, thanks! but i kinda wanna play warzone, and the game idle at 7 gigs of RAM

I'm not saying it won't work. I'm just saying you are likely to run into stability issues and it will also run in single channel and that will effect your speed effecting your FPS. Games like Warzone give you a competitive edge the higher FPS you go. That of course is all dependent on the refresh rate of your monitor.

[Alex Atkin UK]

1 hour ago, Zedbird said:

I'm not saying it won't work. I'm just saying you are likely to run into stability issues and it will also run in single channel and that will effect your speed effecting your FPS. Games like Warzone give you a competitive edge the higher FPS you go. That of course is all dependent on the refresh rate of your monitor.

That's not entirely true, sometimes it will run in dual-channel for the first 8GB of RAM then single channel for the other 4GB, which can be extremely unpredictable.  Although the timing of the problems means taking that stick out should be the first step anyway.

If it IS running single channel though, if the single 8GB is running single channel, its not like adding another 4GB in single channel is going to downgrade your performance, its just not going to improve it either (other than from having more RAM).  That is assuming the speed and timings aren't worse than the 8GB stick.