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11-13-2006, 09:23 AM
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#1
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Nvidia 8800GTS 640MB / 320MB Vmods
Vddr mod:
Original voltage 1.81V
Solder vr from red point to ground. Tune down to increase voltage. With 5 Kohm vr voltage will be 1,86V
Vgpu mod:
Original voltage 1.26V idle 1.21V load..weird
Connect variable resistor from red point to ground. Tune down and voltage will raise.
This one really work 1.3V 690MHZ (Aircooled)
Enjoy 
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
Last edited by SF3D; 02-13-2007 at 09:07 AM.
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11-13-2006, 12:31 PM
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#2
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Result before mods (1.26V) 660/1880.
3DMark06 (10838)
Results after mods (1.3V) 690/1920
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
Last edited by SF3D; 11-14-2006 at 12:21 PM.
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11-13-2006, 01:19 PM
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#3
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I am Xtreme
Join Date: Aug 2003
Location: Cherry Hill, NJ
Posts: 8,357
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I'm seeing 3 red points for the vgpu... Which ones?
__________________
Phenom II 940 BE / ASUS M4A79 / HD5770
3808mhz CPU 2720mhz NB | DDR1088 5-5-5-15 | 975/1300
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11-13-2006, 01:24 PM
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#4
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
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edit..
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AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
Last edited by SF3D; 11-14-2006 at 12:20 PM.
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11-13-2006, 08:58 PM
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#5
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I am Xtreme
Join Date: Aug 2003
Location: Cherry Hill, NJ
Posts: 8,357
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Thanks  Did you try the mods yet your self? I might give them a shot tomorrow but I'm already loading 66c on the stock cooler.
__________________
Phenom II 940 BE / ASUS M4A79 / HD5770
3808mhz CPU 2720mhz NB | DDR1088 5-5-5-15 | 975/1300
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11-14-2006, 02:16 AM
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#6
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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mods are for water or at least serious air cooling...
SF3D you are the man...
i run out of vrs !!! Going to buy some and post later the results
__________________
Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
Last edited by runmc; 08-19-2007 at 07:30 PM.
Reason: language edit
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11-14-2006, 05:27 AM
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#7
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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i have done vgpu mod
where is the measure point of vgpu?
edit: i think it doesn't work
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Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
Last edited by doom_st; 11-14-2006 at 05:34 AM.
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11-14-2006, 06:10 AM
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#8
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Read points:
I can confirm that Vmem mod works. GTX Vmem is 1.95V, so that should be safe.
I will check vgpu mod later today.
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
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11-14-2006, 06:25 AM
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#9
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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i also tried read point from gtx . They work
1 used 1kohm vr for vgpu but nothing happens when i turn it. gpu always ~1.26
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Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
Last edited by doom_st; 11-14-2006 at 06:34 AM.
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11-14-2006, 06:58 AM
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#10
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Just tested VGpu mod myself. It works. I used 1Kohm vr.
Measure resistance between wires soldered on pcb. When you go below 47 ohm you will see that voltage raise. I tested 44.8 ohm and it gives 1.275V. Now my core can go over 670MHz, which was barrier before.
More voltage and results later
I think 1.3V-1.35V is more than enough with aircooling. With 1.275V idle is 58 c and load 77 c 
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
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11-14-2006, 07:02 AM
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#11
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
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ok i'll check it maybe my vr is defective
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Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 07:31 AM
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#12
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Registered User
Join Date: Jun 2005
Location: Thessaloniki
Posts: 61
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Quote:
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Originally Posted by SF3D
With 1.275V idle is 58 c and load 77 c |
It's high for my taste. And I'll get a GTX that will go even higher. Liquid cooling is the way to go, but finding a waterblock that fits is a problem. The 2 I have in my 7900GTs now certainly don't fit .
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CPU: Core i7 920 D0 @3.8 GHz 19x200 1.175Vcore, 1,46V QPI/VTT
Cooling: Zalman CPNS9900 (things about phase)
Mainboard: Giga-Byte X58-UD7
RAM: 12 GB Corsair 1600 CMD12GX3M6A1600C8
Video Card: EVGA GeForce GTX 280 713/1428/1350
PSU: Enermax 1KW Galaxy
Storage: Intel X25-M G2 160GB, 2x300GB VRaptors RAID-0, 2x750GB WD RE2 RAID-0
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11-14-2006, 07:53 AM
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#13
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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same  i checked everything...
i read ~48 ohm from the wires soldered to the red points, solder the vr then nothing WTF?????????????
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Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 08:28 AM
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#14
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
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__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
Last edited by SF3D; 11-14-2006 at 12:20 PM.
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11-14-2006, 08:38 AM
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#15
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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what make is your card?
mine is albatron
can you post a pic of you card moded?
__________________
Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 08:56 AM
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#16
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
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My card is ASUS. Every GTS are identical.
Maybe mod pics later.
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
Last edited by SF3D; 11-14-2006 at 12:29 PM.
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11-14-2006, 09:47 AM
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#17
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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i replaced the 1kohm one with a new 100 ohm
no change at vgpu always ~1.26v 
__________________
Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 12:00 PM
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#18
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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have anyone else done vgpu mod?????????????????????????????
post if it works or not
__________________
Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 12:12 PM
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#19
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I am Xtreme
Join Date: Aug 2003
Location: Cherry Hill, NJ
Posts: 8,357
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Under 47 ohm so wouldn't it be better to use something like an 80 or 100 ohm VR for more precision? All I have here is 10k.
__________________
Phenom II 940 BE / ASUS M4A79 / HD5770
3808mhz CPU 2720mhz NB | DDR1088 5-5-5-15 | 975/1300
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11-14-2006, 12:28 PM
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#20
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Vgpu mod UPDATE!
First post edited. I was pointing wrong resistor
irev210 send great pics and I was able to see traces properly.
SORRY about confusion.
Mod is easy. Just connect vr from red point to ground and that's it 
My core can do 665MHz with 1.26V and now it can do 690MHz with 1.3V.
Previously 670MHz always locked up. Little more voltage, little more MHz
3DMark06 result in first post.
__________________
AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
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11-14-2006, 12:39 PM
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#21
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HWbot Crew / X.I.P.
Join Date: Jan 2006
Location: Finland/Tampere
Posts: 1,516
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Mod:
Idle 1.35V is higher than load ? Weird card..
Load 1.3V
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AOCC2008 WW #5, MOA2008 EU #5, GOOC2008 WW #1, GOOC2009 WW #3, MOA2009 EU #4, MOA2009 WW #4, GB TweaKing #"5" (4,10), Ditech International OC #2 / #2, ASUS ROG OC Showdown # semifinals
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11-14-2006, 03:38 PM
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#22
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Xtreme X.I.P.
Join Date: Dec 2005
Posts: 1,488
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Quote:
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Originally Posted by SF3D
First post edited. I was pointing wrong resistor
irev210 send great pics and I was able to see traces properly. |
Glad i could help
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11-14-2006, 05:09 PM
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#23
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Xtreme Member
Join Date: Oct 2004
Location: Thessaloniki/Hellas
Posts: 115
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it works now 
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Asus P7P55D Pro I5 750 @ 4.0 Ghz(1.32v) 4x1Gb 1333cl9 @ 1600cl8 Intel X-25M SSD 80Gb 2xGTX260 SLI Enermax Galaxy 850w All on water.
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11-14-2006, 06:53 PM
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#24
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Xtreme Enthusiast
Join Date: Oct 2006
Location: Atlanta GA - USA
Posts: 862
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Nice job guys
im getting my GTS probably in the next week (or whenever I get paid for the mobo I sold)
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11-14-2006, 08:35 PM
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#25
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THE GENERAL
Join Date: Oct 2002
Location: Field of Battle
Posts: 10,192
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nicely laid out, thx!
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