8800GTS 512Mb (G92) vMods

[Kilyin]

I've been trying to see how far I can push a watercooled 8800GTS voltmodded with about 1.4 vgpu. The card never goes above 42 celsius. I'm not getting artifacts in ATITool, but it locks my entire PC up and I have to reset it. Upping the voltage doesn't seem to help. I'm guessing this means it just can't handle the core and/or shader clocks?

[Vivi]

That seems normal.

my gts can do 919core, at 1.42load, more volts doesnt give me a even a spec more Core, only freezez.

More voltage only helps when your card is below -20

URGENT
ANYONE KNOW of another place to Solder for Vcore? ANY other solder point other than the current one?

please.

[Bail_w]

That seems normal.

my gts can do 919core, at 1.42load, more volts doesnt give me a even a spec more Core, only freezez.

More voltage only helps when your card is below -20

URGENT
ANYONE KNOW of another place to Solder for Vcore? ANY other solder point other than the current one?

please.

http://www.xtremesystems.org/forums/...d.php?t=163929

[Vivi]

Thank You! You Are Legend!

[jason4207]

I've been trying to see how far I can push a watercooled 8800GTS voltmodded with about 1.4 vgpu. The card never goes above 42 celsius. I'm not getting artifacts in ATITool, but it locks my entire PC up and I have to reset it. Upping the voltage doesn't seem to help. I'm guessing this means it just can't handle the core and/or shader clocks?

Seeing this reminds me that I forgot to respond to your PM. At any rate...what Vivi2 said.


*************************

Here's my latest bit of fun in the heat!

It took me a while, but here are my warm weather bench results (77*F ambient - all air)!

848/2268/1274(2548)

[Vivi]

Guys i want to ask a important Question here.
I had an asus on hardmod. then i put volts up to 1.42 and Diced it. i got a few benchies like 03 done at 1000mhz. BUT. after the 3 the card died. no boot anymore. so i know its dead.

Can anyone tell me if there is risk that the card will break if u dice + hardmod it? (Like too much info to process for the controller and IT dies)

Ive got a really good card atm that does 842 03 stable at stock. ive never seen such a good card. now i want to know if voltmodding + dice will also cause a death Due to something other than the core giving way.

Any info? thanks.

[STEvil]

did you insulate properly?

I'm guessing not.

[Vivi]

ofcourse i did

So can i get confirmation

Hardmod + Cold + Good inso = no death, its safE? Enough

[STEvil]

I think you need to read these forums a bit more if you're asking the question.

[Vivi]

sorry stevil for looking noob, ive dice'd before but im still new so i just want to figure out some things.

Thanks anyway
cheerz

[ViperJohn]

Guys i want to ask a important Question here.
I had an asus on hardmod. then i put volts up to 1.42 and Diced it. i got a few benchies like 03 done at 1000mhz. BUT. after the 3 the card died. no boot anymore. so i know its dead.

Can anyone tell me if there is risk that the card will break if u dice + hardmod it? (Like too much info to process for the controller and IT dies)

Ive got a really good card atm that does 842 03 stable at stock. ive never seen such a good card. now i want to know if voltmodding + dice will also cause a death Due to something other than the core giving way.

Any info? thanks.

You pushed the Vcore 30% above design and you are asking why it might have died...even with
D-Ice/LN2. That was probably 10% above where the core hit the Vcore wall from internal current
leakage and stopped responding to the higher Vcore with tangible clock speed gains.

Try the 842 ROP clock in a 25 pass 3DM01 Nature only torture loop with the title screens disabled
and see if it holds up.

Viper

[Vivi]

thanks allot will do, sorry if i sounded ignorant

So viperJohn, u mean i should keep the vcore lowish like 1.35v? and then ln2 it? im trying to understand what you typed but im not english so its a little bit confusing but looks like it makes sense

thanks allot man

[Vivi]

mods are done, just tell me if anyone thinks something will get smothered.
[quote name='Ch@pS' date='28 Jun 2008, 05:38 PM' post='208337']
Ill be there in Z4CK's place if he doesnt want to go(provided you all pay for me to be there :P)
[/quote]
Cant remember what user had this idea, where u just plug in the VR instead of making a Swtch, but thanks to him wherever he is

made it as neat as i could, and nicely taped to fit snugly so i can insulate without worrying it will fall off

[STEvil]

I think i've suggested that before, but dont think i'm the first.

Yes you need insulation if you plan on playing below ambient temperatures for anything beyond 5-10 minutes.

Condensation does not often cause the death of a part but it can cause instability and the part to seem "dead" until it has sufficiently dried (several hours to days depending on method). Usually the part dies due to a failure from too much voltage and/or current.

[Vivi]

yea i think i got the idea from you if i look a few pages back

Im insulating the hell out of this thing, if anything would go wrong it would be something else popping, and i hope it doesnt

Thanks for your help!

Will post results after the weekend.

[cowpuppy]

Op simple question

I volt modded my GTS (just the core) and I'm still running the factory cooling do I need 2 heat sink the mem if I switch coolers? I have a ZALMAN VF900 that is not currently being used. What about the mofsets? as in jason4207's card? The reason I ask is I usally or used to bound my sinks to the mem and I may this time just want to go back to the factory cooling later on. Thx

[Zeus]

I don't know about the samsung memory chips but the quimonda tend to run pretty hot under load, even at stock volts.

Unless you're pointing a bigass fan onto the the card i think you'd best sink 'm.

[Timbosan]

I had samsung chips on my old GTS, and even running 2.25v through them, they didn't get that warm. However to be on the safe side, i'd feel how hot they get and if its more than slightly warm, get a fan onto them and/or sink them.

[cowpuppy]

Thx guy's I think I will just stay with stock cooler 4 now

[cowpuppy]

Well I couldn't help myself. I mounted the sinks on the mem and installed the ZALMAN VF900 cooler. Well wish I would have never gone ahead with it. Temps are through the roof now 87c I was getting max 68c. The stock cooler works better than the ZALMAN. Yes I pulled the heat sink and I have a good mount. While I had it out cheacking the mount I went ahead and did the Mem voltage mod. Looks like I'll be getting a water block and be hooking my koolance exos up to it in the near future. For now I'll have to turn down the voltages and clocks. Voltage wasnt crazy high ether 1.25 w/clocks of 775/1925/1150

WOOF!

[Vivi]

damn that does not sound right

maybe your cooler is concaved at the bottom and is making bad contact?
shouldnt be that warm

[cowpuppy]

Ya I'm not sure whats going on myself I thought this would be better than the stock cooling here is a link to the exact cooler and all the reviews seem to praise it with a drop in temps. http://www.newegg.com/Product/Produc...82E16835118001

I do notice that the fan is only running @ 1800-1900 RPMs and it should run 2400+ I have it plugged right into a fan header and I'm not using the Variable controller, the controller actually slows the fan down at its max setting. I have fan management disabled in bios (can't remember what it's really called.)

I'm not pumping crazy volts into the GPU right now it's 1.190 Idle and the temps were like this before I did the Mem Mod. Volts for the mem are set as of now 1.942v and both the GPU and mem are nicely soldered and working correctly.

Heat just pours out by the heat pipes when running 3d.

I believe the mount is correct as there is no high spots of TIM on the GPU

It's getting late I will tear it down again in the morning.

[Timbosan]

That doesnt sound right, unless the Zalman is a very weak HSF or you have bad contact. Did you use too much/too little thermal paste? Have you tried running the zalman fan off a molex rather than a mobo fan header?

Failing that, can you remove the ram sinks and go back to the stock setup?

[cowpuppy]

After pulling the Sink again, It's not concave the mount is good no excessive TIM just a Dab that covers the whole GPU. I can't seem to find a adapter to convert the fan plug to a molex, but I don't think another 500rpms is guna be my saving grace, even if it worked.

This cooler is just to small for the heat out put of the 8800gts. The Factory sink is larger, has more pipes and i think the fan moves more air all leading up to my over heating issues. I had the dual slot design.

I can't remove the mem sinks as I bonded them on. I will just have to purchase a GPU water block and get my Koolance Exos out of the closet. I might as well get a CPU block to no use just running it for a Vid card.

[rocketr2]

I have a quick question. What would be better ? An overclocked 8800gts 512mb 900core-2200shader-1150mem, or an stock dual 8800gts 512mb SLI setup.
I ask this because the overclocked gts scores around 18k on 3d06, and the stock SLI setup gets around 15-16k on 3d06.