Overclock.net › Forums › Volt Mods › General Volt Mods › vMOD Gallery: if its mod'd...it belongs here
New Posts  All Forums:Forum Nav:

vMOD Gallery: if its mod'd...it belongs here - Page 52

post #511 of 553
Quote:
Originally Posted by CL3P20 View Post

 Actually reversing the "phase" of the cap can increase filtering or capacitance depending on how its put in-line with existing caps.

From what I remember:

 Adding caps in series [alternating +/-] = increased power filtering potential
 Adding caps in parallel [keeing +/- like-for-like] = increased current potential

**Various GPU's need combinations of both of the above.. some only one of the other .. mostly depending on the power phase design and cap choice/layout on the PCB.


 Regards,


Haven't tried mixing polarity yet....

Got a 4v cap mixed in with my 16v pile a couple weeks ago. Got a nice stinky smell and a few minutes later the wife asked me it something was on fire.... "No honey, just pop'n caps in the office"
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
E8400, E8600, 980BE T2RS+, P5E3, TA890FXE 8800GTS's,GTX's,GS,Ultra's,9600GT Lots of D9's and some crap DDR3 
Hard DrivePowerCase
Seagate 250GB + 80GB WD for benching TT 875w, Corsair 650TX Custom bench station 
  hide details  
Reply
post #512 of 553
Quote:
Originally Posted by madness777 View Post

I added inductors over the stock Gray inductors, 2.5v caps on each side over the stock SMD caps... You can use the 'beep' function on the DMM to find ground... do you know which pins on the power connector are ground?
+ isnt indicated on the cap. Only - is... it's the colored part of the cap... You need to find ground on the card yourself... Easy
in this picture here, there are 6 caps in the red circle you drew. it looks like they are mounted on top of inductors...they certainly arent mounted to smd caps like the 2 other caps in the photo.



no, i dont know the pin layout of the power connector. I will look it up

EDIT: i looked it up. It seems the 6pin power connector has 2 12v pins and 3 ground pins .. i thought there would be a 3.3v pin ??


Quote:
Originally Posted by PizzaMan View Post

Haven't tried mixing polarity yet....
Got a 4v cap mixed in with my 16v pile a couple weeks ago. Got a nice stinky smell and a few minutes later the wife asked me it something was on fire.... "No honey, just pop'n caps in the office"

lachen.gif
Edited by michaelrw - 8/18/12 at 10:20pm
Extreme OC
(52 photos)
  
Reply
Extreme OC
(52 photos)
  
Reply
post #513 of 553
Those 16v caps are original, they're already on the card... They're surface mount caps...

If you looked up the connector, you should now know which pins are GND! You can use them to find ground pins all around the card...

Do you have the same PCB card as mine?
post #514 of 553
Quote:
Originally Posted by madness777 View Post

Those 16v caps are original, they're already on the card... They're surface mount caps...

oh haha they look exactly the same as the ones you added biggrin.gif

Quote:
Originally Posted by madness777 View Post

If you looked up the connector, you should now know which pins are GND! You can use them to find ground pins all around the card...

just follow the trace from any of the GND pins and any mod point/smd on that trace can be used as GND?

Quote:
Originally Posted by madness777 View Post

Do you have the same PCB card as mine?

mine is completely covered in LET for subzero bench and has the stock cooler on it as well...so i cant be 100% sure.. it is an EVGA 8800gt 512mb, green pcb.. ill look at it in more detail next time i have the cooler off, but im pretty sure its the same reference pcb
Extreme OC
(52 photos)
  
Reply
Extreme OC
(52 photos)
  
Reply
post #515 of 553
Anything that's connected to those 3 GND pins can be used as GND...
post #516 of 553
I would suggest using something other than the beep function mine goes off at anything less than 2ohms. Use one of the positive sides of the output caps. Will have the same resistance to any ground.
    
CPUMotherboardGraphicsRAM
1100T ga-990fx-ud3 gtx 4602win corsair dominator 
Hard DriveOptical DriveOSMonitor
OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
KeyboardPowerCaseMouse
DUMB ocz 1000w pretty ugly logitech wireless 
Mouse PadOtherOther
carpet gtx285 classified for physix Nvidia 3d vison  
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
1100T ga-990fx-ud3 gtx 4602win corsair dominator 
Hard DriveOptical DriveOSMonitor
OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
KeyboardPowerCaseMouse
DUMB ocz 1000w pretty ugly logitech wireless 
Mouse PadOtherOther
carpet gtx285 classified for physix Nvidia 3d vison  
  hide details  
Reply
post #517 of 553
good to know thumb.gif
Extreme OC
(52 photos)
  
Reply
Extreme OC
(52 photos)
  
Reply
post #518 of 553
Thread Starter 
Quote:
Originally Posted by PizzaMan View Post

Quote:
Originally Posted by CL3P20 View Post

 Actually reversing the "phase" of the cap can increase filtering or capacitance depending on how its put in-line with existing caps.

From what I remember:

 Adding caps in series [alternating +/-] = increased power filtering potential
 Adding caps in parallel [keeping +/- like-for-like] = increased current potential

**Various GPU's need combinations of both of the above.. some only one of the other .. mostly depending on the power phase design and cap choice/layout on the PCB.


 Regards,


Haven't tried mixing polarity yet....

Got a 4v cap mixed in with my 16v pile a couple weeks ago. Got a nice stinky smell and a few minutes later the wife asked me it something was on fire.... "No honey, just pop'n caps in the office"

 

Good example of 'polarity' flop is with cap mods for GTX480.. using 2-3x caps in series, is actually adding an entire 3rd phase of 'series banked' caps to the PCB.. as it comes with 2x phases in this same config already.

 

* Solid type caps should not be 'flipped' or swapped for polarity.. like polymer caps or tantalum.

 

http://www.xtremesystems.org/forums/showthread.php?251645-GTX480-various-vmods-mods


Edited by CL3P20 - 12/20/12 at 7:17am
post #519 of 553


biggrin.gif
One gear, GO!
(14 items)
 
  
CPUMotherboardRAMHard Drive
FX8150 Crosshair V Formula G.Skill PIS 2200 cl7 Acard ans9010 raid 0+Corsair Force 3 
Cooling
OCN Marksman 
  hide details  
Reply
One gear, GO!
(14 items)
 
  
CPUMotherboardRAMHard Drive
FX8150 Crosshair V Formula G.Skill PIS 2200 cl7 Acard ans9010 raid 0+Corsair Force 3 
Cooling
OCN Marksman 
  hide details  
Reply
post #520 of 553
HOHO that's too much!!! Is that a d*ck on the chip area? xD
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: General Volt Mods
Overclock.net › Forums › Volt Mods › General Volt Mods › vMOD Gallery: if its mod'd...it belongs here