Overclock.net › Forums › Volt Mods › General Volt Mods › The OCN Volt Mod Squad | HWbot's Finest | The Official Club
New Posts  All Forums:Forum Nav:

The OCN Volt Mod Squad | HWbot's Finest | The Official Club - Page 10

post #91 of 1336
Maybe the mem can't take the heat?
    
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 #92 of 1336
Quote:
Originally Posted by CL3P20 View Post
@ Pizza-> Looks solid! You should measure max clocks for mem and core though before hand...and dont change the voltages until you run the GPU after you planned install. Then check for max clocks again at current voltages before upping them further. Nice work btw..thats gonna get you somewhere for sure! Cant wait to see how it turns out.
It would be nice, but I don't have a cooler that will fit the card. The stock cooler is ripped apart for full cover dice action. I'm gonna have a hella benching day as I'm going to have to install drivers and troubleshot problems all while the card is on dice. I'm really looking forward to BIOS flashing from windows while on DICE
    
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 #93 of 1336
..sorry for the double post..but its important

I posted the following in a rant over on XS in the 5770 vmod thread [just so you understand the context from which it was pulled]..but it pertains to adding caps and ESR value.

Quote:
IMO- Using caps with wire leads is not bad if done properly at all..in fact the added ESR from using wire leads is next to nothing, especially when you consider using high uf caps with a low voltage. The amount of additional filtering introduced to the power circuit is still way beyond that of stock ESR values. For example:

Using SMD caps gives the highest amount of stock ESR value over all other types of caps...
Using caps with a lower voltage rating [closer to that of stock vcore], will have a lower ESR value than those with a higher voltage rating
Using a high uf rating ensures low ESR

...So obviously, it would not be in vain to add 4v, 750uf caps to a GPUv circuit...and use wire leads. The amount of added filtering is still beyond that of stock capability.

useful info I found here: http://kakopa.com/ESR_meter/index.html
Quote:
A capacitor which is working at 100 KHz and is 2000 times smaller is going to have an ESR which is ten times greater and is going to generate much more heat in much less space. Miniaturization tends to increase ESR as well as impede heat dissipation. We can see everything here works against us.

..since everybody's "capping"..figured I would share a bit
post #94 of 1336
^^^NICE rant! Very informative.


Gotcha. Monster CAPs FTW!
    
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 #95 of 1336
Thread Starter 
one forums is more than enough for me to keep up with but I peek over at XS whenever they come up on a volt mod google search. definately an informative rant, I will stick with caps with lead wires for sure in the future. I'm not that fluent on that technical mumojumbo but I hhae a quasi-idea what you are talking about in that post

for me all I need to know about volt mods is:

more voltage + higher clocks + lower temps = success = hwbot points
post #96 of 1336
Here's my equipment. Nothing special or high end.

I do highly recommend a piece of plywood. Mobile tech/voltmod/lapping station.



Spent most of the evening fixing loose caps and looking for shorts on that 5870. To no avail so far. I must have soldered a short in the caps on the other side....try to hit that tomorrow.

Also resoldered some caps on CL3P20's old alpha dog 8800. The initial locations would have interfered a little with LN2 mounting. Don't plan on benching it for a while, but since I had the soldering iron out anyway....

Next project in line is a 3870 Toxic. If FTW continues his recent hwbot trends, I'm gonna need to round things out with some more hardware points.
24/7
(13 items)
 
  
CPUMotherboardGraphicsRAM
2600K @ 5.0 ghz 1.4v Gigabyte UD4 GTX 580 Lightning Ripjaws 2133Mhz 7-10-10-27 
Hard DriveOSMonitorPower
Kingston 128 SSD Win7 64 Samsung 245T HX1000 
Case
Lian Li 
  hide details  
Reply
24/7
(13 items)
 
  
CPUMotherboardGraphicsRAM
2600K @ 5.0 ghz 1.4v Gigabyte UD4 GTX 580 Lightning Ripjaws 2133Mhz 7-10-10-27 
Hard DriveOSMonitorPower
Kingston 128 SSD Win7 64 Samsung 245T HX1000 
Case
Lian Li 
  hide details  
Reply
post #97 of 1336
Thread Starter 
I like the plywood idea, my Ikea desk is absolutely trashed from hot solder, my soldering iron and electrical tape ripping up it's black finish. I need to get another card or two off ebay or craigslist STAT because I can't compete with that ^^^^ with my frankensteined 8800gt 512, maybe it's time for a second to try to get some more single card point and some SLI points aswell
post #98 of 1336
Thread Starter 
just ordered my newest card to hit the chopping block, 30$ shipped just need a little fix

http://cgi.ebay.com/XFX-8800GT-512MB...item35a5250302

what do you guys think? this should be an easy fix as far as I'm concerned and hopefully since it's an XFX it'll have hynix or samsung memchips (my alpha dog had hynix) and should be fairly close to reference. would it be worth the extra 20$ for the accelero if I want to do some SLI runs?
post #99 of 1336
Looks like the memory on this 8600gts just doesn't like more volts, took the mod off & mem overclocks a bit better, & when it crashes it just goes back to desktop instead of bluescreen. Put the caps back on & the core goes a bit higher too...
So I was thinking If I use a 50k VR instead of the 20k that I was using I could try undervolting it a bit. I wouldn't think there is danger in using the larger VR but I should check & see since I'm still an amateur at this.

Doc, the accelero is pretty decent, I got one with the 8800gt I picked up off CL. I picked up an accelero twin turbo so I wouldn't have to keep switching the accelero between cards, & the original accelero with a 120mm fan blowing at it cools better than the twin turbo.
Dropped at least 6 degrees over stock on the cards I've used it on.
Edited by FtW 420 - 11/25/09 at 2:14pm
    
CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
Hard DriveOptical DriveCoolingOS
HDDs/SSDs DVD Air/water/phase/copper pot Windowz 
MonitorKeyboardPowerCase
samsung 2320 Razer Lycosa ax1200 carboard box 
Mouse
Trackball 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
Hard DriveOptical DriveCoolingOS
HDDs/SSDs DVD Air/water/phase/copper pot Windowz 
MonitorKeyboardPowerCase
samsung 2320 Razer Lycosa ax1200 carboard box 
Mouse
Trackball 
  hide details  
Reply
post #100 of 1336
Thread Starter 
how is the memory mod set up on that 8600 ftw? do you need to do a reverse mem mod like the 8800gt or will the higher resistance alone be able to undervolt your vmem?

thanks for the input FTW, I'll look into getting some 120mm fans or two 92mm fans to put on this accelero. I talked the guy down to 15$ so 35 for the 8800gt and the cooler which should be good once I solder on that voltage regulator or whatever it is. IF that one is toast the other ones I have on my 8800gt alpha dog should get the job done.

I'm hoping that accelero should help me get up to 1.4 vcore for some SLI runs in vantage and hopefully 01/03/05/06 if I can get a high enough CPU to compare to some of the competition out there. I think if I can get 900 core clocks and near 1200 on the memory I could be able to get a fair amount of points.. only time will tell. I should still have some 1500 grit lying around from lapping my CPU and blocks so maybe this could give the accelero an extra edge

any ideas for cooling the RAM though, the accelero ram sinks should do well but should I try to run a can concentrated on each one? Im thinking since I have a bunch of 40mm fans I can put on one each group of ramsinks

also does anyone what voltage are the fan pins on most of these cards so I don't need a mess of wires coming from my MOBO

edit: disregard that last question that's why I have a DMM
Edited by tha d0ctor - 11/25/09 at 3:32pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: General Volt Mods
Overclock.net › Forums › Volt Mods › General Volt Mods › The OCN Volt Mod Squad | HWbot's Finest | The Official Club