PC rebooting after getting new graphic card

[sauronnikko]

Hi. I used to have a Geforce GTX 680, but changed it to a EVGA Geforce GTX 780 6 GB. My PC is rebooting while playing three games: AC IV, Far Cry 3 and Watch Dogs. This only happens when putting all graphic settings in Ultra (but I'm playing in 1080p/60).

In AC IV, it reboots when starting a new game. In Far Cry 3, it reboots when loading a saved game (the one I had before changing the graphics card). In Watch Dog, my PC only rebooted once, under regular gameplay and using almost the highest graphic settings (I believe everything was high except for the AA which was just FXAA or perhaps MSAA 2x).

Bear in mind that if I downgrade the graphics quality just a bit (like turning the AA down), AC IV will go beyond the start of the game, and Far Cry 3 will load the saved game.

I suspect my problem is the PSU; that it can't handle the new graphic card. My PSU is a Thermaltake TR2 700W.

I disconnected some fans, my DVD-ROM drive, some stuff connected to my USB ports, but the rebooting persists. I am also suspicious about those being the only 3 games where this problem occurs, because they're from the same developer (Ubisoft). Granted, they're probably the most demanding ones. I've also played Batman: Arkham Origins (in the Highest quality), which is somehow demanding, and other games too, and no reboots at all.

Is my PSU sufficient enough? Or is my new graphic card faulty (I'm not overclocking it, just in case)? Or perhaps Ubisoft has some nasty bugs in their games?

For the record, here are some of my other specs:

CPU: Intel Core i7 4770
Memory: 4 x 4 GB DDR3 Corsair Vengeange
2 Hard Drives

Thaks for your help!

 

[i7Baby]

There won't be much difference in load of gtx680 (550W) vs gtx780 (575W).

Try your old 680. Maybe you've got a dud 780. Is is locked into the top pcie slot? And the PSU connected 100%?

Maybe get a better PSU anyway - http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html

 

[sauronnikko]

There won't be much difference in load of gtx680 (550W) vs gtx780 (575W).

Try your old 680. Maybe you've got a dud 780. Is is locked into the top pcie slot? And the PSU connected 100%?

Maybe get a better PSU anyway - http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html

Yes, it's placed in the top PCI-Express slot. What do you mean with "PSU connected 100%"? The card is connected to the PSU with one 6 pin connector, and one 6+2 pin connector.

I could get a better PSU, but I'm worried this problem hasn't got anything to do with it

 

[hans_pcguy]

You want to make sure you are fixing the right thing before buying an expensive item. I would try the graphics card in a different computer first. Make sure you have latest drivers. Make sure everything is plugged in well etc. If you cannot find anything wrong that way, I would call tech support for the graphics card. There are bad cards that behave that way.

 

[sauronnikko]

You want to make sure you are fixing the right thing before buying an expensive item. I would try the graphics card in a different computer first. Make sure you have latest drivers. Make sure everything is plugged in well etc. If you cannot find anything wrong that way, I would call tech support for the graphics card. There are bad cards that behave that way.

Unfortunately, I can't as of now test it in another computer.

However, I did some stress tests, using Furmark and EVGA OC Scanner, and everything was good. It used my graphic's power to 99%, and stayed there for some minutes. I also did a VRAM stress test and it was ok. I am beginning to think that Ubisoft's games are what's wrong

 

[Abmario]

Your psu is more than enough to handle your graphics car as well as your system.. the quality is different issue - it is not good quality psu.

Let's see you software is not the culprit, try clean install your driver, using Driver Fusion (or any driver sweeper you know):
1. Install driver fusion, ensure you got latest Nvidia graphics driver..
2. Uninstall Intel graphic driver.
3. Reboot in safe mode
4. Clean Intel and Nvidia drivers with driver fusion.
5. Shut down.
6. Unplug your computer.
7. Install new graphic card in PCI-E 16x slot (upper one if you have more than one)
8. Plug all the required power connectors in your card.
9. Plug monitor into your new graphic card.
10. Plug back power cord into your computer.
11. Boot into windows and install new drivers and application profiles (they are separate files)

You may also need to run sfc /scannow (run as admin) to see if you don't have error in system files:
http://support.microsoft.com/kb/929833

Then monitor your CPU & GPU temperature (CoreTemp & GPU-Z sensor or any)..