I have problem for assassins creed 3

If I play this game after 15-30 min alaways shutdown or reboot my computer.. Why?

All option graphics :Very High and 1920x1080 x60HZ

My spec

CPU: i7- 980x 3.33GHz
GPU: 3xSLI Egva 480GTX
RAM: 12 GB RAM
Motherboard: Asus Rampage III
PSU: thermaltake 1500watt

please help me

[Edited by abdul1, 1/8/2013 8:36:57 AM]

This may seem like a stupid question, but what OS are you utilizing?

Edit: The reason I am asking, is that if you are using XP you do not have support for Shader Model 4.0. If memory serves, users were suffering crash issues with Far Cry 3 for that reason (though I believe it was strictly CTD issues). If you are using Win Vista or better then everything you are using equipment/software wise should be supported. In that event, you may need to supply crash data here and one of the more tech savvy users is sure to be able to help you out in that event.

[Edited by The Admiral, 1/8/2013 9:40:15 AM]

my operation system use windows 7 ultimate 64bit

And your hardware should be fine.

A couple of things why your computer is restarting

1. Overheating
2. Overclocking
3. Bad RAM

Also why 1500W PSU? You only really needed about 800W max.

Also try the game without SLI.

Also the Motherboard doesn't support 3 x 16 speed SLI'ing.

SLI 2 cards, and have 1 card being a dedicated Physx and Cuda card.

[Edited by DABhand, 1/8/2013 4:16:53 PM]

I will try to disable SLI

Thank you