[Josifek]

Hi guys,

ive been saving this "secret" for quite long, but many of you might know it already. The best was how to get an extra 15-30Mhz out of your GPU/mem is to buy a forton X-booster(the old 300W one) Its proven both on my HD2900 and X1900XTX i owned a long time ago. I dont have any proof thogh, so youll just have to believe me I dont think its caused by low quality of my PSU, since i have an Akasa 460W power suppy and by the time i bought it it was the top of the reviews, comparable to Seasonic... Its just somehow that dedicated supply can deliver "cleaner" and more stable power that causes those higher clocks...

Can anyone experienced in electronics explain this further ?

[Kal-EL]

It could be that the amount of available amps on the rail is at its bitter end of stability. Hooking a seperate psu frees the card to use up the extra amps that are possibly needed for those few more mhz.

Have you tried to see if the original psu/gpu combo scales under colder conditions?

[Buckeye]

One of these ?

http://it-review.net/article/hardware/psu/473

At first I thought you were talking about that stuff you spray in your Cab for a hot shot

Haven't tried one of those mini PSU's. I run a Coolermaster 1100watt PSU so I have plenty of power, at least I hope so

[Neuromancer]

Absolutely it has to do with higher amperage and lower ripple

MY 560W silverstone saw the end of its life in an overclocking rig when I went to a 900W fortron modular (rippple fixed with a recapping) OCs just exploded.

When I got a nice deal on a 950W corsair single rail PSU and tried it out... well that fortron went bye bye.. My OCs improved yet again!

Now for comparisons sake... the 560 -900 W jump was on AMD and the 900-950W jump was on i7. But considering the 560W could not handle a 920 AMD quad and a couple of 4850s OCed to snot on air.. Pretty sure it would have caused an EMP bang the first time I OCed the i7 rig

[Josifek]

Originally Posted by Kal-EL

It could be that the amount of available amps on the rail is at its bitter end of stability. Hooking a seperate psu frees the card to use up the extra amps that are possibly needed for those few more mhz.

Yes it could be... but i dont think that the card could draw as much as 29 amps

Originally Posted by Kal-EL

Have you tried to see if the original psu/gpu combo scales under colder conditions?

I tested it at same conditions, it was in two following days, when i bought the PSU(forton)...

Originally Posted by Buckeye

One of these ?
http://it-review.net/article/hardware/psu/473

Exactly...

[Witchdoctor]

Here is what I use to suppliment my 750 quad .....

http://www.google.com/products/catal...ed=0CBMQ8gIwAg#

Seems to work well knock on wood ..... couldn't swing the big moster back when I was sporting 2 x 295's

still use it for dedecated power to my 5870

[Josifek]

Originally Posted by Witchdoctor

Here is what I use to suppliment my 750 quad .....

http://www.google.com/products/catal...ed=0CBMQ8gIwAg#

Seems to work well knock on wood ..... couldn't swing the big moster back when I was sporting 2 x 295's

still use it for dedecated power to my 5870

Does it boosts your OC compared to a normal PSU ?

[Witchdoctor]

Originally Posted by Josifek

Does it boosts your OC compared to a normal PSU ?

Never really made a comparison .... I will have to make some tiime to do so

[Josifek]

Yes, that would be great, im really curious if powering each GPU from a seperate supply would make some difference... Since one can get this booster really cheap it wold possibly be a better solution to have more small PSUs than one "big"

[Witchdoctor]

We will see, I am under the impresion as long as you are not short of the mark on the PS it realy shouldn't matter....

Basically the same way a 60 watt light bulb lights up the same weather it is running of a generator or of the current in your home.

Hence the dimmer ...... AKA voltage control, you starve the light and it dimm's

This is what I think was going on here .......