8800GTS 512Mb (G92) vMods

[giorgos th.]

Got a friends' card here doing 918MHz AquaMark 3 with the stock cooler ( 100% fan cycle duty ) [ maybe it can clock even higher, I'm not done with it yet ]

Can't wait to put this one on LN2

890+ my 8800 with stock cooler and 1.35Vgpu with 3-4C ambient temps...
unfortunately its dead now..

[BenchZowner]

890+ my 8800 with stock cooler and 1.35Vgpu with 3-4C ambient temps...
unfortunately its dead now..

Not bad.Actually very good for "low" Vgpu.
Too bad it died

My friends' card does 918MHz AQ3/3Dm2001SE with lots of voltage ( 1.468V load ) with the stock cooler @ ~68F ( 20C )
With the help of my A/C and LN2 "amb. air feed" it did 975MHz AQ3 ... at even higher Vgpu ( 1.52V load )

I'm surprised it still works fine

This one is definitely a keeper ( yeah Nick, you won't be seeing your VGA anytime soon ) and a Tek9.0 LN2 card for sure

Now I need to find a decent QX9650

[sb1racing]

Well this is my first post here at Xtreme Systems and I’m happy to say this place is awesome!!! I’m basically a complete n00b at all this overclocking and crazy benchmark stuff but very familiar with computers in general. Work as a Unix / Windows Engineer so I’m usually dealing with large Sun SPARC or HP x86 Servers all day. Last personal computer I built was a Dual PII-400 with an Asus P2B and a 4MB Diamond Viper, probably cost triple what this new system cost me *lol*

Anyhow THANKS to everyone as I’ve just been on here reading what to do and buy, trying to familiarize myself with all this new technology and wild benchmarks. I was pretty dang happy when I knocked off some upper 19000’s in 3D06 with a single Asus 8800GTS on a clean XP64 install, no tweaks or MIP junk. May be better with 1 monitor but not sure, running 2x24" @ 1680x1050. Just need to clean all my settings up and get some of the voltage down a little:

Maximus Extreme
Patriot DDR3-1866
QX9650 (Lapped – Dropped 6-7c under LOAD!)
DD TDX
DD IONE
DD D5 Pump
Thermochill 120.3
Silverstone TJ07 w/DA1200
Asus 8800GTS (vMod Memory 2.24v & GPU 1.48v)
(Thanks for the Instructions & Pics guys!!!)

[jason4207]

I have to say that is one hell of a 1st post!

Good work man, and to the forum!

[jas420221]

Ok... I have had this card for long enough, its time to volt mod. I looked through parts of this thread, but not all. Im sure this was covered but I cant seem to find the info...

What is the max voltage on air for the GPU and Memory, stock cooling with AS5 on the core. I know temps make a difference, but I just wanted to see what the ballpark was for voltage on factory air. Please remember, I want to keep this card for a while (at least a year).

Thanks for your help!

I would need these Pots:

500Ohm Trimmer for GPU

50k Trimmer for Memory

And then shred a molex for easier voltage readings... correct?

[Retratserif]

Just about to purchase new Cards. I do plan on Volt Modding. In your guys opinion, should I get a GTS or GT for max performance.. Also, between BFG, EVGA, ect... which brand and model seems to be generally better for OC'ing and Modding. Core will be water cooled, ram and mosfets will have sinks on them.

What I am looking at for warranties. Before, I do any permanent work I always do a reversible version until things are just right.

EVGA 512-P3-N841-A3
EVGA 512-P3-N841-AR
BFG Tech BFGE88512GTSE

Any other models or suggestions.

I have just about 520$ for Video cards but I want to just get 1 for now. I am still waiting on my 680i RMA. Until then 3700 AMD can only use so much power.

Or should I just say screw it and get a GX2? Not sure, how I would water cool it atm though, because my blocks are not designed for that kinda card.

[cowie]

Ok... I have had this card for long enough, its time to volt mod. I looked through parts of this thread, but not all. Im sure this was covered but I cant seem to find the info...

What is the max voltage on air for the GPU and Memory, stock cooling with AS5 on the core. I know temps make a difference, but I just wanted to see what the ballpark was for voltage on factory air. Please remember, I want to keep this card for a while (at least a year).

Thanks for your help!

yeah im not one to kill my cards either
1.29volts stock air with as5 but low room temps 40f or so

id say your ok single card up to 1.30 on stock air and paste
score aint good but f it.

[jas420221]

Excellent thanks.. Do I have the right pots listed to order (see edit).

Thanks again!

[cowie]

yes they will work just fine
BTW i have not done the memory mod i have quimoda brand so i did not bother

[jas420221]

I havent tested the max on my memory (or seen them naked yet). Im at 1026 with zero problems so far. My core wont go past 810 stock. Shaders are at 1905 so far.

[Retratserif]

No opinions or preferences? Post #431

The EVGA A3 looks like the best deal, plus I want Crysis. I have not touched it since beta.

[jas420221]

You probably should have started your own thread instead of posting a sort of 'off topic' question in a huge thread.....I say just get the GTS. The x2 is out of your stated budget anyway. Always get the best you can afford.

[jason4207]

I havent tested the max on my memory (or seen them naked yet). Im at 1026 with zero problems so far. My core wont go past 810 stock. Shaders are at 1905 so far.

If 1026 is your max you probably have Qimonda RAM, and would benefit more from the vmem buck mod using a 20k VR.

It'd probably be a good idea to check before you order...or just order both.

[jas420221]

If 1026 is your max you probably have Qimonda RAM, and would benefit more from the vmem buck mod using a 20k VR.

It'd probably be a good idea to check before you order...or just order both.

I havent tested my max memory... Didnt the other guy (Cowie) have Qimonda ram and hit well over 1100Mhz?

vmem buck mod? I didnt come across that in my sparse reading of this thread... link?

[cowie]

its(1100 )probly right where yours will run volt mod or not with either brand,

[andrew2004gto]

ok i have samsung memory and i only get it up to 1080 would pencil mod work for the memory i have a 1k on the vgpu i do have another 1k, 10k, and 100k but no 50 k would one of them work

[jason4207]

I havent tested my max memory... Didnt the other guy (Cowie) have Qimonda ram and hit well over 1100Mhz?

vmem buck mod? I didnt come across that in my sparse reading of this thread... link?

In my experience the Qimonda RAM on the GTS will do somewhere around 1050 (1062 for me) w/o any volt mod. With the vmem buck mod and a little less voltage (1.96v worked best for me) the RAM will do a little over 1100 (1107 for me).

vmem buck mod (50k VR to points shown...this lowers vmem):



I haven't had experience w/Samsung RAM, but from what I've read (iirc) it tends to go over 1100 w/ stock voltage and over 1200 w/ a volt mod for more voltage.

ok i have samsung memory and i only get it up to 1080 would pencil mod work for the memory i have a 1k on the vgpu i do have another 1k, 10k, and 100k but no 50 k would one of them work

100k should work, but you won't have as fine control over the voltage.

[andrew2004gto]

hey thaks for the help, yea thats what i was thinking it will be more touchy, i hope i can get to 1200 it would be nice

[VoodooProphetII]

Well I've GPU vmodded my GTS, and increasing the VGPU up to 1.382V I'm able to do 880 core, 2200 shader and 1100 memory. Now stock voltage using the 169.28 driver I was able to reach 800 core, 1950 shader and 1050 memory without any problems and running 24/7. But last night, and again this morning when I tried running 800 core, 1900 shader and 1050 memory I kept getting lock-ups in fire fly 3dmark06. This was again with the stock voltage but using a 174.XX driver. Could this be due to the driver, or maybe it's the card starting to fail. Normal stock clocks no problems. And I don't even get artifacts in ATItool running these clocks for 30minutes artifact testing.

[largon]

There's an easier soldering point for the reverse vMEM mod.

[jas420221]

Anyone got a better place than Allied to ship these from? I do not like that fact that the shipping charges are "pending"...or can someone tell me Im not going to get ripped off???

[jason4207]

Anyone got a better place than Allied to ship these from? I do not like that fact that the shipping charges are "pending"...or can someone tell me Im not going to get ripped off???

Mouser

[jas420221]

Excellent. Ordering.

[giorgos th.]

I haven't had experience w/Samsung RAM, but from what I've read (iirc) it tends to go over 1100 w/ stock voltage and over 1200 w/ a volt mod for more voltage.

yeap...1175mhz with stock Vmem when it was alive..

[jason4207]

yeap...1175mhz with stock Vmem when it was alive..

How did it die?