Reliable 9700 vmod guide?

[STEvil]

I have been searching the net gathering resources..

Does anyone have some measurement points for the vcore and vmem? I'm going to crack open my case and check in a minute, but confirmation would be good... 8-)

Also, two other questions: does more resistance or less resistance make for more voltage and what is a good point to start at with my VR's for the vcore and vmem? One VR is a 10k, not sure what the other is yet, though, as I have to unsolder it from a PSU yet.. and going to R82 mod my Enermax 430 while i'm at it..

EDIT

I found a 2.66Kohm resistor to use for the vcore.. should put me just under 1.8v.

Anyone know what to use for the ram to put it 3.0v or near? 2.7Kohm gives 3.32 according to xbitlabs.. so i'm guessing 2.9Kohm or so?

EDIT 2

Found a 2K and a couple 466 ohm resistors.. 2.9k on the button all in-line 8-)

My stock voltages, btw, are 1.5 and 2.81... decided to just go prodding around with the multimeter, hehe.

[q149]

If i have a pic of the back of the card i know where all the measureing points are. lower resistance gives more voltage on all 4 mods. I really can't remember the resistances i use for any of them.. i know i use a 10k v-r on vgpu and i use the same resistance for vref and vdd with fixed resistors but i forget how many ohms they are. I forget vddq too but i think it's somewhere between 10-20k with fixed resistors also

[G H Z]

http://thecrucible.ca/images/voltages.jpg

-10k vr VGPU and work down in resitance from there to up voltage's

-20k vr on VDD -not sure where it's at k wise right now

-10k vr on VREF -gives about 1.33 @9.57kohms

can't say on VDDQ as I have yet to try it.

I would not try anything less to start than these resistances. This is my second card thank's to XBit Lab's BS guide. All I did was the VGPU mod on it @ 3.7kohms as they said.......fried 9500 Sappy real quick like.

G H Z

[Ragnarok]

http://www.thecrucible.ca/forums/viewtopic.php?t=83

best guide for 9700 Pro/Non Pro (all revisions)

[STEvil]

xbit suggests 2.7 for 1.75v vgpu, GHZ..

*looking at crucibles now...*

[G H Z]

Originally posted by STEvil
xbit suggests 2.7 for 1.75v vgpu, GHZ..



Be my guest. It fried my first Sappy9500 in the blink of an eye, and the mod was done perfectly.

Just use some vr's and work up to your max/best overclocking voltages. It's safe and effective. Don't turn the trim pot's too quickly whille powered up either. Heard of one guy killin his card as a result. That's my advice.

I can also gaurantee that the 50k on Vref as per Crucible thread is way off, he played it ultra safe due to the vref card frying stories. Anyways, I started there and had to solder/unsolder about 20 times with different combinations of vr and fixed to find that out. As I said, a 10k on Vref gives about 1.33v set at it's max of about 9.57k ohms.

G H Z

[STEvil]

I'm only doing the vcore and vdimm 8-)

Would like to get some closure on the set resistance value, though, because I have these ones next to me that "supposedly" should work..

[STEvil]

Hey, I found this while looking for more info... cool idea on mounting hard drives!!

http://users.cybercity.dk/~dsl45720/

EDIT

Broke down and put the 10K on.

1.6v = 400mhz (maybe 405? Haven't tested....)
1.75v = 425mhz (430 crashed at start of nature)

Cooling: "Chunk of copper" (AVC Skived Copper Cooler) air cooling, haven't noticed any temperature change on the back of the core between 1.5 and 1.75 as of yet...:banana:

[STEvil]

Update

Stock voltages:
VDDQ - 2.8v
VGPU - 1.5v
VREF - 1.4v
VDD - 2.98v

I think my core sucks.. 430 takes ~1.82v to make it 100% 24/7 stable.

[Ragnarok]

why is ur vddq so damn high? turn it down!

[STEvil]

Thats completely stock settings, nothing on the card at all.