Souping Up your VGAs

[miahallen]

Great guide Peter...thanks!

[Karmakazi]

thanks shammy, Ive learned alot from this one!!

[SoF]

Originally Posted by Karmakazi

thanks shammy, Ive learned alot from this one!!

+++1 Tried to find the right words was quite hard, but think you nailed it

[Gatman]

Originally Posted by Shammy

For example it’s a voltage to the core of 1.2v then you can pick a 2.5v cap. If a voltage to the Memory say 1.80v then probably a 6.3v cap.

How do you decide to use 2.5v for core and 6.3v for memory? Can't 2.5v work for both? Or even 6.3v for both?

What should the relationship between the output voltage and the cap you use be? I assume there's a benefit to having the cap you pick's rated voltage as close as possible?

[MTP04]

Nice guide Shamino, lots of good info...Thanks!

[Shammy]

Originally Posted by Gautam

How do you decide to use 2.5v for core and 6.3v for memory? Can't 2.5v work for both? Or even 6.3v for both?

What should the relationship between the output voltage and the cap you use be? I assume there's a benefit to having the cap you pick's rated voltage as close as possible?

maybe say give a buffer room of 0.3v, between the highest volt u use and the rated cap, so that spikes do not go above the rating.
DDR3s you will be putting in 2+v so best to pick 6.3v.

the higher the voltage rating, the bigger it's size for the same amount of capacitance so theres no point in picking and way too oversized one.

[Raja@ASUS]

ESR can be lower on a larger can capacitor (higher voltage same capacitance), althoug as Sham points out, you run out of sensible sizing range before the ESR will really make a difference to a switching circuit.

[saaya]

nice guide!
did anybody actually mod his card?
im not sure i understood everything, would be great to have a pic of the final result

[Shammy]

I think nothing can be understood 100% without hands on trying out, but i think those who hands on try out stuff can catch this

[bazx]

peter i am trying the mod out on a 280 gtx

when you say "500+UFs" would it matter if they were 2500 as i have some already or is it best to get some rated @ 500

baz