Voltmodding my 7900 - Page 6 - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Overclocking and Modding
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 07-30-2006, 12:55 PM   #51 (permalink)
Master Techie
 
Join Date: Feb 2006
Posts: 2,992
Default

Anything higher then 1.55 look for watercooling....

I Beilive one guy took his up to 1.8 on DICE for all those 3DMark records...


wth GTX's of course...

Im pretty sure it was K|ngP|n.
__________________

__________________



May the wind always be at your back and the sun upon your face, and may the winds of destiny carry you aloft to dance with the stars
Lord AnthraX is offline  
Old 07-30-2006, 01:37 PM   #52 (permalink)
Master Techie
 
Join Date: Jun 2005
Posts: 2,134
Default

OK, found an old 120mm fan lying around, so i balanced it on top of the 7900gt heatsink, with most of the fan hanging over the edge over the memory chips.

the highest i have seen it is 67*C, and a 45*C idle. that is doew from around 80*C load, 55-60*C idle. jolly good stuff.

anyone who still has the stock cooler, has the thin plastic film over the manufacturers custom picture gone all distorted because of the heat? mine is all bumpy.
__________________

joshd is offline  
Old 07-30-2006, 02:14 PM   #53 (permalink)
Ultra Techie
 
Join Date: Jan 2006
Posts: 781
Default

jesus. my card never gets above 36
__________________
Intel Q6600 w/ CM Geminii
MSI P6N Deluxe SLI
BFG 8800GT w/ 22'' Acer LCD
OCZ 2x2GB
WD 400GB SATA
Razer Barracuda AC-1, Razer eXactmat
Logitech G15, MX Revolution, X-230
Zalman Fatal1ty FC-ZE1 case w/ Zalman ZM-MFC1 Fan controller
R1C0CH3T is offline  
Old 07-30-2006, 02:36 PM   #54 (permalink)
Master Techie
 
Join Date: Jun 2005
Posts: 2,134
Default

well the stock cooler on the standard 7900gt's is not very good at all really...
joshd is offline  
Old 07-30-2006, 06:35 PM   #55 (permalink)
Techie Beyond Description
 
Apokalipse's Avatar
 
Join Date: Jun 2003
Location: Melbourne, Australia
Posts: 14,559
Default

Quote:
Originally posted by Lord AnthraX
Guys make sure you put your entry into the Volt mod thread


Im working on mine

Also Apokalispe are you doing a 1.55?
I've got it at 1.73V ATM, it's on air cooling.
I put heatsinks on the capacitors, because they were starting to get hot. now they're relatively cool.

I did this:

replaced a 5kohm resistor with a 47kohm resistor (they recommended 50kohm but i could only find 47) to increase voltage by 0.28V (calculated)
with a 50kohm resistor it would be a 0.3 increase

replaced an 86kohm ressitor with a 30Kohm resistor (to increase switching frequency) - this allowed me to get past 700MHZ, in combination with the 47Kohm resistor mod

did a conductive pen mod to increase the voltage by 0.2V + 0.05V - this made it stable at 750MHZ
__________________
Apokalipse is offline  
Old 07-30-2006, 07:08 PM   #56 (permalink)
Master Techie
 
Join Date: Jun 2005
Posts: 2,134
Default

i have maxed out at 560/815. core because of voltage, and mem artifacts on Deep Freeze if any higher.

it isnt going any further unless i take the plunge and buy a new heatsink, ramsinks, and vmod.

EDIT: why does it have the 2d and 3d memory clocks the same? 815MHz probably isnt the best way to go in 2d...
joshd is offline  
Old 07-30-2006, 10:44 PM   #57 (permalink)
Hard Gay Nahalem! Fooo!
 
NosBoost300's Avatar
 
Join Date: Nov 2005
Location: Bellflower, CA
Posts: 10,154
Send a message via AIM to NosBoost300
Default

okay, volt mod was a success!!! i just scored 10500 on 3dmark05 at 650/1800, so imma try for 700 right now, and go for higher, i'm only on 1.4v, don't think imma try for 5
__________________
Current Build:
Intel 3770k @ 4.4 GHZ | Galaxy GTX 770 SLi | 16 GB G.Skill Sniper | ASrock z77 Extreme4
2xSamung 840pro 128GB in Raid | 2x1TB Seagate | Antec 750 Watt GamerSeries
Media Build:
Intel Core i3 3220 | Galaxy GTX 650 | 8 GB Corsair Vengeance | ASrock B75M | Samsung 840 120GB
NosBoost300 is offline  
Old 07-30-2006, 10:47 PM   #58 (permalink)
Master Techie
 
Join Date: Feb 2006
Posts: 2,992
Default

Good luck...


680 is as stable as I can get on 1.4.....


1.5 should bring 710 and 1.55 obviously 760 ish and 1.7 is 780 and 1.8 is 800 ish...
__________________



May the wind always be at your back and the sun upon your face, and may the winds of destiny carry you aloft to dance with the stars
Lord AnthraX is offline  
Old 07-30-2006, 11:02 PM   #59 (permalink)
Hard Gay Nahalem! Fooo!
 
NosBoost300's Avatar
 
Join Date: Nov 2005
Location: Bellflower, CA
Posts: 10,154
Send a message via AIM to NosBoost300
Default

well on 1.4 directly after 3dmark05 my temp was 63 degrees, so thats a nice temp, imma take it to 1.5 right now and take this bad boy to 710 and try to get that 11500 in 3dmark 05.. i just 11 by overclocking my cpu .2 ghz, to 2.6.. lets try for 2.7
__________________
Current Build:
Intel 3770k @ 4.4 GHZ | Galaxy GTX 770 SLi | 16 GB G.Skill Sniper | ASrock z77 Extreme4
2xSamung 840pro 128GB in Raid | 2x1TB Seagate | Antec 750 Watt GamerSeries
Media Build:
Intel Core i3 3220 | Galaxy GTX 650 | 8 GB Corsair Vengeance | ASrock B75M | Samsung 840 120GB
NosBoost300 is offline  
Old 07-30-2006, 11:10 PM   #60 (permalink)
Ultra Techie
 
Join Date: Jan 2006
Posts: 781
Default

ok wtf i just bought a multimeter, and im trying to see the ohm's on the ram voltmod resistor. my meter isnt reading anything at all, ive switched sides and everything, and card is laying on a chair. what am i doing wrong? i havent even done anything yet, just trying to do the first step in the guide
__________________

__________________
Intel Q6600 w/ CM Geminii
MSI P6N Deluxe SLI
BFG 8800GT w/ 22'' Acer LCD
OCZ 2x2GB
WD 400GB SATA
Razer Barracuda AC-1, Razer eXactmat
Logitech G15, MX Revolution, X-230
Zalman Fatal1ty FC-ZE1 case w/ Zalman ZM-MFC1 Fan controller
R1C0CH3T is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 02:15 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.