PSU not enough?! Tags: New Build Systems Product Last response: December 31, 2010 2:41 PM in Systems Share Awall440 December 31, 2010 1:53:35 AM Hi all, I just recently received a Phenom II x4 955 along with an ASRock 870 Extreme3 and a HIS 6850. I had a PSU if 550w and is an Antec Neo (though it is 4-5 years old). But I decided to use it anyway figuring it should be enough. It has 3 12v rails with 18 amps per. Is that too low? I got everything set but the system wouldnt boot. I then unplugged the 6850 and tossed in my old gts 250. Comp booted up like a champ. So, my question is, is my PSU the issue? If so, what should I be looking at? I am looking to get the following: Thanks for your replies. My apologies if the link didn't take. More about : psu omnisome December 31, 2010 2:36:15 AM About 400W and 35A is all that's needed for that setup. Your Antec PSU should be enough. joelmartinez December 31, 2010 2:46:58 AM Maybe it's going anyway the psu you posted antec ea650w is the current best deal in power supplies Related resources Is my 600w psu enough ? - Forum Is my 600w psu enough ? - Forum Will a 500W PSU be enough for this build? - Forum Will this PSU Be enough ? - Forum 7770 crossfire is my psu enough - Forum Can't find your answer ? Ask ! Get the answer ko888 December 31, 2010 3:24:56 AM Your Antec NeoPower 550 is more than sufficient to power your system. When you say "the system wouldnt boot" are you saying the system is dead? If it does power on, does it show any BIOS POST screens? If you do see BIOS POST screens, does it boot into Windows Safe Mode or do you even see the Windows splash screen? If you do then it's probably just a graphics card driver problem. Awall440 December 31, 2010 10:14:40 AM I am actually on the PC right now. I have installed windows 7, a couple games, etc. But when I toss in the 6850, nothing. It's like there is no power there. Awall440 December 31, 2010 1:09:11 PM I am also wondering if the video card is DOA? zooted December 31, 2010 2:23:55 PM ^That is possible, considering it works fine when you put the 250 in there. It will be enough power for the 6850, the two cards should have similar power usage. Awall440 December 31, 2010 2:41:31 PM At least I can still RMA it. =/ Guess I will try a couple more ideas and if they still don't work, I'll RMA. Can't find your answer ? Ask ! Publish Related resources: ForumCorsair cx 430 psu enough to run phenom x4 970 and hd 7770? ForumThis psu good enough for crossfire? ForumPSU good enough to run a gaming machine ? ForumIs my PSU sufficient enough for my (Built) PC build ForumIs this PSU Enough for this Build? ForumPSU enough for rig? ForumIs my 620W Psu powerful enough for 2 radeon 5850 in crossfire? ForumPSU not good enough ? or CPU bottleneck? ForumWill my pure 500 watt psu enough for GPU GTX560 with this kind of spec ForumSufficient enough PSU ForumIs my psu enough ForumRosewill Green Series 530W PSU enough . ForumWill this psu be enough for my system? ForumWILL THIS PSU BE ENOUGH ???????????? ForumThermaltake PSU enough fot nVidia GTX 650 Ti? More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !