dfi infinity nf2 vdrop and overcurrent mods

[Vlad Draculea]

h

[Malves]

Cool! I'll have a Infinity here tomorrow and will post some pics of the HIP6301 area. So, you found Rin on this board?

[Vlad Draculea]

o

[sjohnson]

A droop mod would likely make this board capable of finding water on mars

Seriously, drooping Vcore is about the only flaw in the board, and the main reason it's hard for me to push for high 3dmark scores, I beleive drooping is what causes so many 3dmark crashes at high FSB/high CPU speeds. Good luck with getting a mod to work!

[PORTUGAL]

hy

i think i found this 3 resistors,it conects from isen pins hip6301 to output from mosfets,i have an image:

http://tirado.do.sapo.pt/dfi_ultra.jpg

what is vdrop?

[Vlad Draculea]

l

[PORTUGAL]

but the overcurrent mod no influence in vcore,only in vdrop?

i think im going to 2.7k fixed resistors to test overcurrent mod.

[Vlad Draculea]

a

[mongoled]

I was just abt to go out and buy some parts for doing some voltage mods on my stuff when i saw this.

Please post instructions or what info u need

i will be sat here waiting

mong

[mongoled]

Right cant wait any longer im off to the shop

[Vlad Draculea]

,

[The Doctor]

The pic isnt working
Great work on the mod hope it works.

[Vlad Draculea]

m

[Fewture]

k..who's first? Great work btw.. hope it rocks.

[mongoled]

At last Vlad you are back,

Too late for me im afraid, I had my mthbrd on my desktop ALL DAY yesterday waiting for you to provide this information. I would have tried it, but not now.

In not ungrateful, this information could be what we are looking for and your work is commendable



If only you posted this yesterday



My PC has been put back together again, someone else will have to do this first and confirm if it works or not, then and only then will i take my PC apart again.

mongoled

[STEvil]

Vlad, would the overcurrent mod be easier if you used a load balancing wire on the back of all 3 mosfets (assuming they all read the same voltage on their back and this is safe to gang them this way..) and then removed all 3 resistors for the isen pins on the IC and combined the inputs of the isen pins to the same resistor/VR instead of having to use 3? This would allow adjustment while running maybe, too.

Assuming everything is sensing the same voltage and each mosfet is being fed the same voltage this shouldnt be a problem I dont think..?

[DarKcyde]

mmmkay, this looks nuckin futz. Vlad, you're obviously pretty familiar w/ the power regulator... how about that empty capacitor where u ground the vcore/sense mods? Can u figure out if thats part of the power regulation circuit, and if adding a cap there would help any? Just a shot in the dark, but if its gonna require this much soldering, might as well look into it.

Another, possibly just theoretical question: have u actually sat down and done the math on this circuit, to see if >2.1V vcore would actually trip the isen? Sure, somebody can try it, and just see if it works, but solid theory backing it never hurts.

[SAE]

Nice workaround :thumbsup:

But it seems it's not perfect yet. Maybe <b>Holst</b> can come here and have a look too. He could eventually confirm it would work

[sai]

Sorry but what's that exactly good for vdrop and overcurrent mod ?

[full loaded]

Damn I can't w8 to see if this mod works to you guys, this will put my mobiles to the max!! (when the arrive)

[DarKcyde]

Sai: the DFI boards won't go above 2.1V, even with a vsense mod. Also, there seems to be instability as soon as a vcore mod is hooked up. Vlad's theory is its actually being limited by the isen, so its pulling too much current when voltage is cranked that high. The overcurrent mod will allow more juice through, and hopefully resolve the 2.1V vcore, and stability, problems.

[DivineEvil]

Damn, i could desolder those resistors, but my DMM died somehow.
I wrecked the board, so i couldn't care less about desoldering those resistors, but without a DMM there's no use doing that eh?

[Vlad Draculea]

e

[DarKcyde]

So wait, is this gonna help us get MORE than 2.1V vcore??? Thats what everybody wants real bad. Or is it just to solve your isen problem?

I knew u just used that cap for a ground. I was asking if you knew what that cap slot is hooked to, and whether it'd be worth putting a cap in there.

[Vlad Draculea]

v