Nvidia GTX 260/280 reference PCB

 

Pics:

 

 

 

 

OCP:

 

 

 

 

vMEM:

 

 

 

 

 

I have a question about the OCP mod. On all the cards I have, the OCP component reads as either 20K or 28K depending on what "direction" I hook up the probes. Have my cards been given adjusted component values?

 

If I attach a 50K in parallel, I get ~18K as the result, where does the "25K instellen" come from?

Kenny , 25K instellen means set the 50K VR to 25K nothing more .

Thanks Alex, so basically all we need to do is cut the OCP signal in half

 

Bet a 3-phase PWM will LOVE that :D

I did that with my Old GTX 280 1.5v+ was no problem on Water

 

http://hwbot.org/submission/1065627_freakezoit_3dmark06_geforce_gtx_280_25376_marks

Thanks for the aiming point Best i've ever had on water with GT200 is 775MHz, but I always keep volts low

65nm GPUs actually scale a lot more with temperature than with voltage. I only used about 1,4 Volt there: http://hwbot.org/submission/2238092_der8auer_3dmark05_geforce_gtx_280_45658_marks

Oh yea, cold is definitely the way to go with GT200 If a card can handle 1.5v + 825MHz+ core + "warm," then OCP is clearly not a problem :D

 

 

 

Oh.... some of the original pictures are wrong. At some point, i'll get accurate ones posted

Oh Kenny or Alexander, Can you please uploading pics of your OCP mod?, i dont understand very well the pics in the first post, sorry

Here you go bro

 

Here you go bro

 

 

Thanks K and Roman !!! i'l try this now understand :banana:

Hey guys,

 

I found a little mistake for the VDD mesuring point.

 

 

 

And for the OCP a very simple things:

 

OCP GTX 260 = 183Kohm

OCP GTX 280 = 250+Kohm

 

Anyone has pics from first post? Seems they're not available after forum migration

39 minutes ago, phobosq said:

Anyone has pics from first post? Seems they're not available after forum migration

Not sure exactly what you need, but check this post maybe it can help you.

https://www.overclock.net/forum/410-benchmarking-competitions/1675577-freezer-burn-overclocking-competition.html#post27027249

Looks perfect, thanks!