Sneakers_Matri Posted August 16, 2008 Share Posted August 16, 2008 Hey all. I have had some wierd inconsistent issues with my system since I got it. From time to time it has been flawless in the games I normally play, beeing Age of Conan and World in Conflict, both quite heavy on the PC. I got a second graphics card some months ago and I encountered problems during SLI, with wierd crashes and bsods as result. I got this system to work flawless aswell from time to time, but with problems comming back every now and then, and obviously I suspected that to be incompatability issues between Microsoft Vista updates + nvidia drivers causing the bsods and sometimes freezes during gaming. I naturally also suspected my PSU to be too weak to muster a SLI setup with my 8800 GTXs when I initially bought it, but I did some extensive research and found that it "should" handle it. Now some week ago I got my system to become rocksolid during sli play for about 10 days, then drivers changed, windowsupdates changed and I got issues again, with freezes and bsods. So now I turn to you guys to try and 100% cut the PSU as the cause from the list. My system is following: 2x 8800 GTXs, clocked to 630 clocks / 2000 memory ( a decent OC that is ). E6750 2.66 ghz clocked to 3.4 ghz (that to a decent OC ). Western Digital RaptorX 10k rpm. 2x dvd-rom/dvd burner (samsung standard 203 models ). Creative soundblaster Gamer soundcard ( pci ). 4x sticks of 1gb high end fabrique ram. Asus P5N-D 750i motherboard ( basically the same as the Evga 750i FTW mobo but with no unnecessary things ). I'm trying to power all this with a 620W HX modular PSU, wich gives out 50 amps over the three ( actually combined ) 12v rails. In my book this PSU should be able to do this without any problems at all. I have tried to verify this by 4-5 diffrent PSU calculators but to be frank they all give out diffrent estimations for what above system requires, also I know the wattage is the least problem here but the total amps delivered on the 12v rails that matter. Any comment or help in this matter would be higly appriciated. And it would be nice to hear what Ram Guy thinks about this, should the Corsair HX620 be able to power a system of this caliber or do I need to sell my PSU and move up to the 1000W one? :confused: /edit To make this even more of a fuss, I know for certain of people running 3 way 8800 GTX SLI on the 620 wattage PSU with problems only in Crysis ( wich pushes the gpus to very high loads over time ). Their comps hangup, wich in my opinion clearly shows of the PGUs drawing too much power in that game at 1920 resolutions, but that is to be expected since crysis is a really demanding game and a 50 amps psu shouldn't handle 3x g80 in an overclocked system. /edit2 To add something to the discussion ( I hope will arise @ monday :) ) here is an URL of a site that did tests running 8800 GTXs in SLI in a heavily OCed quad cpu system. http://www.legitreviews.com/article/462/1/ And here is a show of the system he used in this test: http://forums.legitreviews.com/viewtopic.php?t=8495 Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.