8800GTS 512Mb (G92) vMods

[cole2109]

Not bad for dual core on 3700MHz



Need good Quad

[NightRaven]

I was under the impression that doing the OCP mod on the GTS was kinda pointless unless you are going for very high volts (requiring exotic cooling). Does anyone have any info to the contrary?

Also, if you are going to do the OCP mod you should solder resistors in parallel to the caps, not remove resistors. I know removing them works, but it also upsets the phase balancing. Someone on here already killed a MOSFET doing it that way. Comments?

They are also increasing vmem in the article. I know that decreasing vmem works better on the GT, and I assume the same to be true on the GTS. Comments?

I do like the caps they added, though!

well that is also true.. but yan used 1.5vgpu on air to be exact..

hmmm well sometimes engineers from respective manufacturers do tell us to remove certain resistors to get certain stuff.. so i will suppose it is relatively safe but not recommended at all. perhaps our friend was just unlucky.

to be honest i have had no gain with increasing volts for mem. havent tried decreasing but it may work. personally rather just leave it.

[VoRtAn_MaDgE]

to be honest i have had no gain with increasing volts for mem. havent tried decreasing but it may work. personally rather just leave it.

Lowering vmem for me gave me no beneficts at all...same as default.
Gonna try more volts to see what happens

[NightRaven]

haha all right... i'm guessing no benefit too but let us know

[gOtVoltage]

What does this mean guys ? I made a large change to my fan arrangement on my radiators but I still cant lean on it with any more than 1.4vgpu is it either has a graphical lockup or gives the error shown in the screenie

Im still nudging 17800 area but I want to crack an 18k score , then I can game in peace .

Check your water temps and or Nvidia Driver..

Driver Error..Ive had that before with unstable driver..try installing newer Beta or roll back one driver..Ive noticed some drivers dont like to overclock past acertain point!

i just updated to 169.28beta for XP pro x64bit..Gets same clocks as the 169.21whql but is stable...The 169.21 would crash my pc sometimes while using 3Dmark06..169.28beta seems 100%stable at least for me..

Up date on My Vgpu modded GTS Evga512mb

3Dmark06 with 3.5ghz 1603beta bios and 1000mhz @4-4-4-12-2T TRC21/2.3vmem HT//ram setting sucked balls!


950//2322//2250 @1.528Vgpu and stock memory Vmem!Before finding the optimal memory and HT tweaking in 1603bios..1603bios really makes you start from scatch on the memory and HT settings



Ive since done some tweaking and now my card sings @3.5 with optimized memory @only 388mhz 1T timing 4-4-4-12-TRC21 1T @2.3vmem..."Im Cpu limeted"..Though id never say that line with a X2 6000+Still tweaking with settings ,,Theres more too get outa this thing yet

[aussie-revhead]

Yes it seems that I hit a driver wall with overclocks , I have 169.28 but I had an issue with that too , so I will go back to it and try again , it just feels like the gpu is capable of so much more ....



Have you seen or tried this driver ?

http://downloads.guru3d.com/download.php?det=1818

Title says 169.28 WHQL but on the page it says 169.29 .

[andrew2004gto]

Hey i have a bfg 8800gts 512 well i did a volt mod and i cant get more than 1.3 volts top clock is 833/2052/1110 did a 14600 but anyway when i try to turn more volts the screen goes blank or freezes thought maybe ocp but i removed that nothing, could it be my powersupply that is only a 585, 2 rail at 20watt, with 6 fans, 2x2gb at 1052, 680i lite, e4300@3550@1.55volts with 1.4v

[aussie-revhead]

Carefully check your solder points mate , that gpu point is tiny and very close to other components. My card clocks to 820 before vmod and at 1.3 will pass at 900 . It wont be ocp at that voltage . What are your temps like ?

[andrew2004gto]

My top temp that i recorded using rivatuner was 68 while play cryis for an hour, i tried to set my computer back to stock so it would take less power nothing, trying increasing pcie nothing, when i try to increase vols and using atitool the whole thing freezes and when i lower a bit it artifacting like crazy but than about another half turn to lower volts its fine again at 2052shader but wont go high without artifacting like crazy, and what u mean about check my soldern, like what do u want me to look for?

[aussie-revhead]

The solder point is tiny , are you sure you didnt accidentally bridge to a neighbouring component ? I soldered mine under a magnifying glass and it was still hard to see. Most people are reporting problems with any temps over 50 , so Im not sure if this is part of your issue.

Did it run OK before you modded it ? What did it clock like before mod ?

[andrew2004gto]

the thing is i only solder was the the negitive the one that gets close to the little chip i just let it touch it and i super glued it on the side but anyway would this help u if i told u i had a 8800gt evga and i had the same problem but just at 770/1900/1040, but had to rma cuz the ram went to and artifact like that one screen shown in the 8800gt vmod fourm of him playing bioshock, so i didnt want to take a chance and get another 8800gt so i got the bfg, but i i get 28.5fps in crysis bench on very-high and at 1680x1050, i guess its not to bad and yea about over-heating wouldnt u think the chips it cools would get really hot since this whole thing is conect

[aussie-revhead]

the thing is i only solder was the the negitive the one that gets close to the little chip i just let it touch it and i super glued it on the side ...

WTF dude ? I seriously doubt you will get a good connection like that ... attend to this immediately .

[andrew2004gto]

no that cant be it it wouldnt freeze up on me like that, it rases volts it freezes about 1.32 on load i try to keep it under i think is getting to hot

[jason4207]

Your connection is probably bad due to the poor conductive properties of super glue, and that is adding resistance (why you can't get your vcore any higher). It also may be micro arcing and causing stability issues.

Use a soldering iron, or leave it alone.

[Zeus]

Glueing wires? omg. Nice clocks once again, gOtVoltage, can you show a pic of those clocks running ATI tool artifact scanning?

[aussie-revhead]

Does anyone else have an EVGA G92 ? Can you try to match the clocks of gotvoltage ? Mine is a GALAXY budget card so maybe thats why mine doesnt clock as well .

[STEvil]

820/2000 isnt that bad, but should be doable at ~1.3v idle for 100% stability

Mine does 800 on stock volts but will crash eventually. 1.25v idle gives me stability at 800 (probably a bit more, havent tested higher at 1.25).

[cowie]

these boards are so much fun to v-mod
must do better on cpu/mem clocking for better scores but i love this card.
evga,stock volt overclocks 825/2100/1100
with only 1.33 at load ,mem stock 1.97
918/2250/1100 runs all 3dmark benches
lapped stock heatsink


first 88 cards to run 900+ air you have to love it

[aussie-revhead]

Cowie - where is your 06 score ? Why is your idle temp so low ? Is it snowing there ?

Why is it the G92's with aftermarket cooling wont run over 50 degrees yet the stock cooler does ? Could they be set up to monitor fan function and set a lower gpu-temp threshold when fan speed is low ?

[cowie]

i not try to show my scores but they come in screen shot
.....well cold air helps so i make cold the air
why would i want put volts in card if you no keep cool?
this is extreme right? so extreme cold i make air for stock heatsink.
right now amb temp is 67f in room fan 100%

i not just jump to higher volts ok?
i rub it just right
\stock fan is very good
lenth of fins and cover are its 'tricks'
might be stock fan but its modded EXTREME

[Zeus]

Finally got my EK fullcoverblock in, (have to update my sig ) it was a bit hard to get perfect contact but eventually i managed.

So, with a rediculous amount of bubbles in the loop i started rasing voltage and never saw over 43ºC full load.

The air has to bleed out which takes several days and the thermal compound (MXII) has to settle a bit so temps will go down and i have to say ambient was pretty high at the time of testing.

I was testing the floorheatingsystem so i reckon ambient was up to ~23+ºC, usually it's ~20ºC here.

So far at 912 core 2205 shader and 1128 memory ATItool ran without errors but after 2 minutes some yellow dots started to appear.
This was with 1.47V idle 1.51V load.

I could go a little higher on the core but 928 locked up in 3D, shaders could go as high as 2250 but started artifacting there.

All in all, only a brief test but i'm quite happy.

[gOtVoltage]

Finally got my EK fullcoverblock in, (have to update my sig ) it was a bit hard to get perfect contact but eventually i managed.

So, with a rediculous amount of bubbles in the loop i started rasing voltage and never saw over 43ºC full load.

The air has to bleed out which takes several days and the thermal compound (MXII) has to settle a bit so temps will go down and i have to say ambient was pretty high at the time of testing.

I was testing the floorheatingsystem so i reckon ambient was up to ~23+ºC, usually it's ~20ºC here.

So far at 912 core 2205 shader and 1128 memory ATItool ran without errors but after 2 minutes some yellow dots started to appear.
This was with 1.47V idle 1.51V load.

I could go a little higher on the core but 928 locked up in 3D, shaders could go as high as 2250 but started artifacting there.

All in all, only a brief test but i'm quite happy.

Dont go above 2250 on the memory...Ive tested 5 cards in arow and they all get funny after that...

Ive seen the GT is now getting samsung memory which can handle 2300mhz @1.0ns.. Id like to get a new GTS with the Samsung then this card will come alive...bandwidth kills it...If it had 90b/w instead of 72.b/w it like having two totaly different cards..

I try ATi tomorrow ..need to download it for XPx64bit Just redid my waterloop for CPU after modding my D-Tek..To 7 mm jet

That Ek is real nice ... the oc is even better! Im using MCW60 with ramsinks...I may make custom copper sinks with 3/8copper tube after testing one more card...I braze 3/8 tubes onto flat copper and flare the ends to adapt to water!Then ill tie the memory t into my MCW60 loop

[Zeus]

Oh really? Funny like what? Artifacting or something?

Just benched 06 at 900/2200/2300, 1.41V idle so around 1.46V load:



If only i had a quadcore.

[T_M]

I was under the impression that doing the OCP mod on the GTS was kinda pointless unless you are going for very high volts (requiring exotic cooling). Does anyone have any info to the contrary?

Exotic cooling is all mine runs

Also, if you are going to do the OCP mod you should solder resistors in parallel to the caps, not remove resistors. I know removing them works, but it also upsets the phase balancing. Someone on here already killed a MOSFET doing it that way. Comments?

Can you draw what you mean on a photo please.

[VoRtAn_MaDgE]

Can you draw what you mean on a photo please.

Sorry about using your pic...too laisy to pic my digicam and shut off my system
Something like this T_M,
check blue rectangles