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[LR] NVIDIA Geforce GTX 590 Video Card Blows Up on Video - Forceware Drivers Blamed - Page 7

post #61 of 242
Quote:
Originally Posted by Kand View Post
Even still, that wouldnt help the fact that 4+1 phases is horribly inadequate for a guzzler like the GF110 with 512sp.

I mean, you know how well 4+2 phases do for GTX 570's when overclocked.
Sure it is, if you use higher rated fets and capacitors. A single phase buck converter could do the job easily, given high enough rated components; it would just be far less efficient and cause thermal issues.
post #62 of 242
Why do you say it's a 4+1 phase design?

Quote:
Powering the twin GPUs is a 10-phase advanced digital power controller with over-voltaging capability, while two dual-phase controllers provide power for the board’s GDDR5 memories.
post #63 of 242
Quote:
Originally Posted by Pedros View Post
Why do you say it's a 4+1 phase design?
4+1 per GPU. And there are two sets per GPU making a total of 10.

So it has 3GB worth of GDDR5? Wait, in SLI, does the second GPU's RAM really get utilized?
post #64 of 242
But isn't a 5+2 ?

2 x Dual Phase controllers for the memory
1 x 10 Phase controller for gpus

( Read my quote 3 posts above )
post #65 of 242
Quote:
Originally Posted by Pedros View Post
But isn't a 5+2 ?

2 x Dual Phase controllers for the memory
1 x 10 Phase controller for gpus

( Read my quote 3 posts above )
Well, what ever the phase count is, it's insufficient!

http://www.overclock.net/amd-cpus/94...choose-50.html
post #66 of 242
Wow. LOL.

Just wow.
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post #67 of 242
Quote:
Originally Posted by Kand View Post
Well, what ever the phase count is, it's insufficient!

http://www.overclock.net/amd-cpus/94...choose-50.html
That my friend, i absolutely agree with you eheheh
post #68 of 242
Quote:
Originally Posted by Pedros View Post
That my friend, i absolutely agree with you eheheh
http://www.overclock.net/nvidia/9291...led-570-a.html

Yeah, check that out as well. GTX 570's are practically starved on power with their 4+2 power phases. What more would a 580 be on 5+2? (or whatever)
post #69 of 242
4 phases - GPU
1 phase - memory controller
2 phases - GDDR5 VRAM

That's how it is. Taking into account the actual GPU chip and that only, it is 4+1 phase.
We have enough trouble with 4+1 phase trying to run 125-140W chips on AMD systems. This is a GF110, you're talking well above the 150-175W range. It obviously won't be enough.
post #70 of 242
Surely this is quite an issue? The fact that all that's required to kill the card it to set the voltage to 1.2v and bang. I'd be wanting to get this fixed if I was Nvidia and out there.

This sort of thing should have been picked up in simple testing anyway.
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