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post #121 of 1336
The datasheet is on the post above,on page 4...No need for the PCB shot as its not difficult to understand...I already found a resistor that connects to the OCS leg...
But i think i ll use lower voltage for starters...
    
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post #122 of 1336
Quote:
Originally Posted by CL3P20 View Post
@ Theo- FB is pin #5..measure from there to ground for vMEM
U mean vGPU...the vMEM is on the left side of the diagram that OUTPUTS 2,5volts for the DDR memory!
Quote:
Originally Posted by CL3P20 View Post
OCP is pin #4..measure from there to ground...raise resistance to raise OCP.
Yes thanks fro corfirming my suspisions!Will try to solder there...But for raising the resistance i need to connect in series right?And not in parallel as usual right?
    
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post #123 of 1336
the data sheet you posted was for vMEM correct..? If so-> then pin5 is 'FB'..
post #124 of 1336
No it was for the vGPU.There is no other voltage controller on the PCB...Elcheapo card anyway!!!
The DDR memory uses 2,5 volts so there is a converter that makes 3,3 to 2,5 and then feeds memory.The FB is for the vGPU.I solder on it and i saw increase,but now i resolder again to decrease it...
    
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post #125 of 1336
I did some research here and i have this shot for u

I hope it helps!
Please help me mod this thing cos i ll get many HWBOINTS!!
Edited by theo.gr - 11/28/09 at 11:09am
    
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post #126 of 1336
Thread Starter 
good post theo +rep

that is probably the easiest card to volt mod it seems lol, I want to get one now
post #127 of 1336
Thanks pal!I think tomorrow i ll v mod the memory and them i ll Put a 200kohm on the vCORE too!So i wont give much voltage on the core just 50mvolts will be good i think!
Wont trigger OCP...
This babe goes from 350core/200mem(ddr) to 500/260 easily!So i think with some extra volts on the mem like 2,8-3 with sinks on the chips and a little juice in the core will hit 600-650/300mem!
    
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post #128 of 1336
To answer your question about resistance the formulas are as follows:

Series: R1+R2=RT so 1k+1k=2k

Parallel:1/R1+1/R2=1/RT so 1/1k+1/1k=2x10^-3rd, then 1/2x10^-3rd=500ohms

Sorry if thats confusing, I just dont know how express scientific notation in ASCII
Edited by Voltage_Drop - 11/28/09 at 1:39pm
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(13 items)
 
  
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|i5 750-voltage may vary| |Foxconn Katana[Non GTI]| 380 4Gb |4Gb/Tridents@Clocked| 
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|[V3/60Gb][500Gb]| |Windows 7 64 bit| |LG-EW224| |Antec HCG750| 
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EVOLVE
(13 items)
 
  
CPUMotherboardGraphicsRAM
|i5 750-voltage may vary| |Foxconn Katana[Non GTI]| 380 4Gb |4Gb/Tridents@Clocked| 
Hard DriveOSMonitorPower
|[V3/60Gb][500Gb]| |Windows 7 64 bit| |LG-EW224| |Antec HCG750| 
Case
|Tech Station| 
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post #129 of 1336
Thread Starter 
nice, have you ran any benchys yet to see how close you can get to some hwbot cups? gotta love the old hardware cause if you have a newer CPU you can demolish old records sometimes
post #130 of 1336
I wonder how long could actually a 8800GT last at 1,4v...
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