Is my PSU right?

Steveocee

Steveocee

Steveocee

Soldato
Joined
5 Nov 2011
Posts
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Location
Derbyshire
Hey all,
As title really, I am a little jittery I may not have a powerful enough PSU or even got my rails correct.

I have a 960t unlocked but not oc'd
3 hdd and 1 ssd
2 DVD drives
Hd 7950 not oc'd

My power supply is an antec true power 650w

I'm running everything off the main hard wired cables and 1 add on rail. My graphics card is running solely off the hard wired rail, would I be better adding a 3rd rail to power one or both of the 6 pin plugs on the gfx card?

I have the occasional driver crash and recovered when using chrome and dirt3 but I play a lot of other games where it is ok. It's more a safeguarding that I have my psu right than anything else.

All replies appreciated
 
You'll be fine, the card uses less power than a 560ti and I'm pretty sure people are running those off 650W PSUs. If you have an unused 3rd rail I would suggest using that to power at least part of the GPU though, just to increase longevity of the supply.
 
PSUs don't generally have true rails, they are just virtual current limited ones. If you go over this current limit the PSU would shut down. It varies but this limit is usually above the limit on the label. The reason they state 18A rail is due to cable limitations rather than rail limitations.

Your graphics card will at most take 150W from the PSU through the PCI express power cables and that's only 12.5 Amps so that's easily ok.
 
That's good, was really worrying about it not being enough.

So general consensus to add in another rail for gfx just incase or leave as is?
 
If leave it as running another cable just makes things more messy and considering the power is coming from the same source it will make no difference anyway.

I used two cables on a previous PSU but that was before I found out how they split the rails in modern supplies. They did used to have individual rails in the olden days you see.
 
What GPU drivers are you running? No offence but AMD's drivers for the 7900 series are a bit pants at the moment. 12.5 betas seems to be the most stable so far, but then apparently the 12.7 betas are pretty good too.
 
I have no idea at the moment to be honest, I'll have a look next time I'm on pc, I have been having awful problems on dirt3 but I put them down to the dx11 bug, I've never experimented with beta drivers etc, wouldn't know where to get them but am happy to try if it will stabilise things
 
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