8800GTS 512Mb (G92) vMods

[andrew2004gto]

well im have some big problems now idk whats up my graphic card on the back is like burning hot like i burnt my finger and it cause stability issues also seems like my whole computer is really hot more than average, i notice this when i heard a weird buzzin from my power supply everything still worked then it just went away any ideas?

[sx2233]

It's my first time doing vmods on a video card I don't rly know how to get started but I got some 1k VR's it says from left to right, 3,2,1, three legs, under the 3 it says CW, which number would be ideal for ground?

[sx2233]

ZOMGVTEK,
How is the stability at 950MHz/2325MHz/DDR-2650?

ehh it said ddr 2325 in the link

[kiparosu]

EVGA 8800GTS 512 Watercooled +Vmod 900-2253-1150(mem)
EVGA 680i sli A1
Q6600 @ 4050ghz Watercooled
Ram OCZ Platinum @900mhz 4-4-4-9-1T

18076 3dmark 06

[ZOMGVTEK]

It's my first time doing vmods on a video card I don't rly know how to get started but I got some 1k VR's it says from left to right, 3,2,1, three legs, under the 3 it says CW, which number would be ideal for ground?

You might not want to do it if you dont know what youre doing.

Take a look at the bottom of the card, do you see the area you need to solder to? Have you ever soldered before? You are going to need a multi meter to do this, and it dosent sound like you have one. If you did, you could use it to measure what legs to use if you didnt know.

Seriously, you have a good chance of blowing the card if you dont know what youre doing.

[andrew2004gto]

hey guys i need the componet right by the power insert, their is about 8 of them i think one is bad because im not getting any power, i tried a different one of my old gts g80 didnt do anything , it would help me so much if u could tell me what it is call and where i could get it

thank you

[ZOMGVTEK]

hey guys i need the componet right by the power insert, their is about 8 of them i think one is bad because im not getting any power, i tried a different one of my old gts g80 didnt do anything , it would help me so much if u could tell me what it is call and where i could get it

thank you

A capacitor? The big round silver thing? That would not affect the thing from getting power. And they dont really go bad, other than after 10+ years, or if they get too much voltage or reverse voltage and explode.

And you have a G80 GTS laying around that is useless to you? I kinda need parts off one... lol...

[ZOMGVTEK]

I finally got the revision 2 of the Vmod done. Took about 5 mins, lol. Im a fan of my new read point method...



And a quick 3DM06 run...



Im only at 2.000 Vmem, and about 1.3V core under load, the stock cooler + high ambients isnt a great combo. I have a thermalright hr-03 gt on the way. Then i can get some higher voltages, and should be able to get the mem up to 1250 stable. I had it there before anyways, but i didnt mess around much, just a little extra v.

[andrew2004gto]

well if affects it from working, well i had it come off one i solder it on and it worked, but i think it might of touched both ends and gottend fried but not the bored but they can go bad if they touched, and yea i do have a 8800gt g80 320mb evga it broke like a year ago, first solder opps

[kiparosu]

What's the 24/7 safe Vmem for Samsung memory? How about the max vmem?

[funkflix]

Bought a better second GTS now, and this is what i can do so far:



Vgpu 1.349V at idle.

But that new Zotac have just Qimonda on it, but still one of the better cards with that memory. My other Zotac can do 1206MHz + without any mod.

Tomorrow on XP with system clocked to maximum. Let's see what i can reach!

[kiparosu]

Pretty low temps on the GPU funkflix. What rads are you using?

[funkflix]

Chiller @ 21°C water.

[babalouj]

Kiparosu, I was wonder the same thing so I asked Largon and he said around 2.15V approximately where I would want my samsung. I will say that the samsung memory gets extremely hot with just sinks and needs a fan if you are watercooling just the gpu like I am.

[r4st4m4n]

You might not want to do it if you dont know what youre doing.

Take a look at the bottom of the card, do you see the area you need to solder to? Have you ever soldered before? You are going to need a multi meter to do this, and it dosent sound like you have one. If you did, you could use it to measure what legs to use if you didnt know.

Seriously, you have a good chance of blowing the card if you dont know what youre doing.

there is a beginning for everything

I didn't have any soldering experience before to vmod my GT and although it's not very pretty, it turned out working very well.

Just read this guide before to take the plunge: http://www.xtremesystems.org/forums/...d.php?t=115387

But you should train on an old PCB before to do the real one. I used a old floppy drive, and although the soldering points were much bigger, it helped me a lot.

You'll need a good soldering iron with a fine tip plus some basic stuff like DMM.

[kiparosu]

Kiparosu, I was wonder the same thing so I asked Largon and he said around 2.15V approximately where I would want my samsung. I will say that the samsung memory gets extremely hot with just sinks and needs a fan if you are watercooling just the gpu like I am.

Thanks for the reply. I have gpu waterblock only too, and yes my samsungs too get extremely hot to the touch, I'll put some bigger sinks on them and add a fan. 2.15V max or 24/7 safe volts for mem?

[babalouj]

Thanks for the reply. I have gpu waterblock only too, and yes my samsungs too get extremely hot to the touch, I'll put some bigger sinks on them and add a fan. 2.15V max or 24/7 safe volts for mem?

2.15V is what I plan on running 24/7. I will get back to you after I mess around with the voltages. Im sure there is a point of diminishing and I am aiming for that point.

[ZOMGVTEK]

2.15V is what I plan on running 24/7. I will get back to you after I mess around with the voltages. Im sure there is a point of diminishing and I am aiming for that point.

I would like to know as well. I was kind messing around with the mem, but its hard to get it stable once the thing stars gets in the 60+'s...

Im waiting for my cooler to get here on wed.

[begrip]

stuff like this seems to be pretty simple, it's just the soldering that can be a bit difficult at the beginning. But i loved your guide its nice you actually done the mod so we the novices can see it in real!

[Bail_w]

stuff like this seems to be pretty simple, it's just the soldering that can be a bit difficult at the beginning. But i loved your guide its nice you actually done the mod so we the novices can see it in real!

everything seems to be simple, but once you start doing it. you will be like this

[ZOMGVTEK]

everything seems to be simple, but once you start doing it. you will be like this

Agreed.

[ZOMGVTEK]

I got my cooler in, keeps my card around 58ºC at 1.45v core, 785mhz.

The problem is, my 3dm06 scores are LOWER than what they were. It looks like out of nowhere the card slows down... Why?

On ATI Tool, the fuzzy cube runs fine at 1300+ fps, then if you keep opening and closing it, it will just shoot down to 7-800 ish.

Id assume it is doing this sometime during the 3dm06 run...
It was doing this before on the stock cooler when it got hot. But it isnt hot...

[jason4207]

Check PCIe link width in CPU-Z when you notice the slow down.

[ZOMGVTEK]

Ok... I think i got the random slowdowns figgured out.

And im currently testing stability at 865/2275/1295
1.52 Vcore Load, 1.205 Vmem Idle, 1.201 Vmem Load.

[ZOMGVTEK]

I still cant get above 18,600 ish 3DM06...

I WANT 20K! I guess i could run at 4.0... *sigh*

And whats the highest 24/7 voltage i should run on the mem? i have it at 2.25 ish now to get it stable at 1300.