Guys , have the Samsung chipped cards emerged yet ? Can you tell which has samsung ?
:up:
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Guys , have the Samsung chipped cards emerged yet ? Can you tell which has samsung ?
:up:
I have find this vmod....
Test it man. ;) lolQuote:
Originally Posted by pchs
Awesome! You've got a good start. Let's just hope it scales well. If you decide to play w/ the memory voltage, please let me know if those Samsung chips responds better to higher or lower voltage.Quote:
Originally Posted by Alex-Ro
I asked Viper about this, and he seemed to think it wasn't possible. I really hope he's wrong, though!Quote:
Originally Posted by STEvil
How did you get your FSB so high (515) w/ the quad? Just a good chip?Quote:
Originally Posted by VoodooProphetII
Let me know if it works. From what I understand a BIOS mod won't work. The GT had a mod b/c there were 4 VID values assigned (0-3), and only the 3rd VID (2) was selected in the stock BIOS. By selecting the 4th (and highest) VID (3) you were able to get 0.05v extra...no more. With the GTS the highest VID is already selected, so there is no way to select a higher one.Quote:
Originally Posted by pchs
I just looked at the BIOS file, and I'm sure it won't work. All they did was change the label for the VID (I tried this on the GT as well before I understood more about how it works). VID3 is still seen as 1.15v by the chip even if you change the label to 1.35v. VID3=1.15v; you can call it whatever you want, but that fact doesn't change.
It will require cutting traces and/or lifting legs on IC's I believe. I havent taken the time to look into it much yet though :(Quote:
Originally Posted by jason4207
Hey Jason, I think I was just lucky with the chip, meaning good chip. But its 515fsb with only two cores. Can go up to 525 but air cooling holding me back.
STEvil,
One would have to desolder all RAM chips and cut the connections between vDD and vDDQ solder pads. Then build vDDQ it's own power regulation circuit.
->
Impossible.
I've just bought a GT (Twintech) this week and it has samsung chips so I guess that some of the recent GTS may have samsung chipsQuote:
Originally Posted by aussie-revhead
Thanks for the help, I have a Modded 8800 and a stock 8800 the both read .6ohms resistance from the leg to ground.Quote:
Originally Posted by T_M
And I dont think the problem was my 8800, after trying a differnt gpu/ram/psu I concluded it mas my board.
Here's some pics of my 8800 GTS 512
http://i16.photobucket.com/albums/b1...h_DSCF1269.jpg
http://i16.photobucket.com/albums/b1...h_DSCF1266.jpg
http://i16.photobucket.com/albums/b1...h_DSCF1257.jpg
http://i16.photobucket.com/albums/b1...h_DSCF1256.jpg
http://i16.photobucket.com/albums/b1...h_DSCF1237.jpg
So in summary -
Buy a 500ohm VR instead of a 1K ohm?
Is the 50K OK? Or lower?
I don't get why we need a 50K VR when we are only potentially setting it to around ~600ohms anyways, why not just get a 1K VR here. Same with the 1VR, why not just get a 250ohm? Makes no sense, unless I'm wrong (which I probably am)
maxwolfie,
500Ω and 20kΩ VRs are fine for vGPU and vMEM mods respectively.
Infact, we are not setting the 50kΩ VR in the vMEM mod to anywhere near 600Ω at all. We're using the 50kΩ VR to set the whole circuit to ~600Ω. The catch with the high rated VRs is that the added VR and the preinstalled SMD resistors are installed in parallel thus resulting in a bit different combined resistance than either components separately.
Are ovp or ocp mods necessary? If so, what components are required? Heading to elec store now
Quote:
Originally Posted by largon
1. I have also purchased these resistors - Please confirm that the photo there is actually a G92 and not a G80? Or at least confirm that it won't bugger my G92 if I try it? I'm only running the stock fan anyways so I might not even NEED to do these mods. I've read that it's only necessary for big vgpu increasesQuote:
Originally Posted by largon
2. Is that the OCP or OVP mod?
3. Also, can I use normal resistors instead of SMD resistors, as my elec store did not have SMD (only capacitors)
4. One more thing, in regards to the actual vgpu/vmem mods - There are a couple of different types of VR's available - 20KOHM MULTITURN CERMET TRIMPOT, 20KOHM SPECTROL 25 TURN TRIMPOT and the open carbon type which I have purchased but are almost IMPOSSIBLE to adjust without going waaaay past the desired value! Hence me searching for 500 ohm and 20k ohm VR's instead
Yes you are wrong.Quote:
Originally Posted by maxwolfie
Ok, I will stick with the 500ohm and the 50Kohm instead, as per your original instructions
Cheers
Quote:
Originally Posted by maxwolfie
By the looks of other peoples' mods, I'm after the 25 turn trimpot. I'll go grab 1 x 500, 1 x 1k and 1 x 50k now. Also 2 x single pole single throw switches so I can turn the mods off iif needed :)
Switches for the mods are good, but only switch on the mods with the system off or else you will likely trip some safety in the video card that protects against rapid voltage increases, and the system will reset.
Help me to understand this then?Quote:
Originally Posted by T_M
Because even with a 500ohm VR, I'm finding it near impossible to get 13.x ohms. It jumps from 8 - 20 ohms even with the smallest adjustment
Why such a large VR? I must not understand properly
Righto, mod failed. I don't have the stable hand or a decent enough soldering iron to be doing such intricate work
*sigh*
Are any of the points able to be accessed on the other side of the PCB? Especially the tiny solder point for the vgpu. I've taken all the solder off it now, so I have no chance.
The pic is of a G92GT but it applies also to G92GTS but wit a third SMR.Quote:
Originally Posted by maxwolfie
That's OCP. There is not OVP mod for any G92 based boards (afaik).Quote:
2. Is that the OCP or OVP mod?
BUT!
OCP shouldn't be a problem for G92GTS as it has (atleast) 3 phases. G92GT on the other hand could gain from OCP mod as vGPU is just 2 phase thus the phases peak above the trip-point easier.Yes.Quote:
3. Also, can I use normal resistors instead of SMD resistors, as my elec store did not have SMD (only capacitors)
I can atleast confirm that both Cermets and Spectrols are ideal for any vMods (I personally prefer Spectrols).Quote:
4. One more thing, in regards to the actual vgpu/vmem mods - There are a couple of different types of VR's available - 20KOHM MULTITURN CERMET TRIMPOT, 20KOHM SPECTROL 25 TURN TRIMPOT and the open carbon type which I have purchased but are almost IMPOSSIBLE to adjust without going waaaay past the desired value! Hence me searching for 500 ohm and 20k ohm VR's instead
Sounds like you're tuning the resistor BEFORE you solder it in.Quote:
Originally Posted by maxwolfie
WRONG! Don't do that.
Tuning the VR before soldering can possibly destroy the card (if you don't know what you're doing). Always set the VR the max value before soldering (unless directed otherwise). You are supposed to tune it AFTER it is soldered.
I explained why this is important earlier in post #286.There are no optional soldering points other than those depicted in G92GT vmod guide pic.Quote:
Originally Posted by maxwolfie
Excellent, at least I understand now
Cheers :)
you guys must have pretty steady hands :P
For small detail soldering i always steady the iron with two hands and both elbows on table, and even then i still shake a bit
i just use adhesive conductive paint like so: http://www.xtremesystems.org/forums/...ghlight=ghetto
worked fine on my 8800gts512 using 500ohm multi turn vr set to maximum resistence initially
Very good! I'll try this tomorrow - Cheers!Quote:
Originally Posted by flytek
Hi,
recieved my 8800GTS today, but i just have some 200ohm VRs left! Will they work too for Vgpu? Thanks in advance.