der8auer Posted January 5, 2014 Posted January 5, 2014 Nvidia GTX 260/280 reference PCB Pics: OCP: vMEM: Quote
K404 Posted February 2, 2014 Posted February 2, 2014 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? Quote
Freakezoit Posted February 2, 2014 Posted February 2, 2014 Kenny , 25K instellen means set the 50K VR to 25K nothing more . Quote
K404 Posted February 2, 2014 Posted February 2, 2014 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 Quote
Freakezoit Posted February 3, 2014 Posted February 3, 2014 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 Quote
K404 Posted February 3, 2014 Posted February 3, 2014 Thanks for the aiming point Best i've ever had on water with GT200 is 775MHz, but I always keep volts low Quote
der8auer Posted February 3, 2014 Author Posted February 3, 2014 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 Quote
K404 Posted February 3, 2014 Posted February 3, 2014 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 Quote
Crew Sweet Posted February 4, 2014 Crew Posted February 4, 2014 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 Quote
Crew Sweet Posted February 4, 2014 Crew Posted February 4, 2014 Here you go bro Thanks K and Roman !!! i'l try this now understand :banana: Quote
rockeur.alexis Posted February 7, 2016 Posted February 7, 2016 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 Quote
phobosq Posted July 18, 2018 Posted July 18, 2018 Anyone has pics from first post? Seems they're not available after forum migration Quote
bigblock990 Posted July 19, 2018 Posted July 19, 2018 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 1 Quote
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