Overclocking 8800GTX with Danger Den waterblock - so so

  • Thread starter Thread starter Deleted member 978
  • Start date Start date
  • Tags Tags
    CPUs
Toggle sidebar Toggle sidebar
D

Deleted member 978

Guest
Installing the DD waterblock was pretty simple, running 1/2" loop that is dedicated to the GPU.

Setup
Swiftech MCP655 Pump, Swiftech dual 120mm radiator with two 120mm fans, 1/2" tubing, DD waterblock for 8800GTX.

Under stock: 575/900
3DMark05: 18334

Overclocked with stock air cooler: 622/1000
3DMark05: 19235

Overclocked with DD waterblock: 637/1020
3DMark05: 20122

I was able to run it at 666/1100 but it was not stable in some games - i.e. FSX. Had to drop it down a lot to make it 100% stable for 2 hour FSX sessions.

Note: I think there is something else built into the GPU that throttles back performance as I would get different results in 3DMark05 (I normally run 5 tests loops in a row and the results varied from 19835 - 20217, variance between tests seems a tad too much).

I'm somewhat disappointed, I expected more stable performance. I was using nVidia Control Panel via nTune option to do the overclocking.

It does run cooler, 38c at idle and only 45c under load, and no fan noise of course.

Rob.
 
I was able to run it at 666/1100 but it was not stable in some games - i.e. FSX. Had to drop it down a lot to make it 100% stable for 2 hour FSX sessions.
Click to expand...
maybe its not enough voltage? 😱,

though we must remember that 1100mhz (2.2ghz) on the memory with gddr3 is faster than the gddr4 used in the 1950xtx, unless of course loads of people have alredy achived over 2ghz with gddr3. I've been away for a bit so I haven't quite got the knowledge how well the 8800 series overclocks...
 
I was able to run it at 666/1100 but it was not stable in some games - i.e. FSX. Had to drop it down a lot to make it 100% stable for 2 hour FSX sessions.

It does run cooler, 38c at idle and only 45c under load, and no fan noise of course.
Click to expand...

G80 loves voltage.

It runs @1.25v stock, very low considering its on the same 90nm process as the 7900GTX, which ran at 1.45v iirc, and was fine @1.6v with cooling.

Of course, with stock cooling there is no way you want to increase the voltage. With a DD waterblock, you do!
 
I was able to run it at 666/1100 but it was not stable in some games - i.e. FSX. Had to drop it down a lot to make it 100% stable for 2 hour FSX sessions.

It does run cooler, 38c at idle and only 45c under load, and no fan noise of course.
Click to expand...

G80 loves voltage.

It runs @1.25v stock, very low considering its on the same 90nm process as the 7900GTX, which ran at 1.45v iirc, and was fine @1.6v with cooling.

Of course, with stock cooling there is no way you want to increase the voltage. With a DD waterblock, you do!


excatly how does one increase voltage on a GPU? particularily this GPU
 
I was able to run it at 666/1100 but it was not stable in some games - i.e. FSX. Had to drop it down a lot to make it 100% stable for 2 hour FSX sessions.

It does run cooler, 38c at idle and only 45c under load, and no fan noise of course.
Click to expand...

G80 loves voltage.

It runs @1.25v stock, very low considering its on the same 90nm process as the 7900GTX, which ran at 1.45v iirc, and was fine @1.6v with cooling.

Of course, with stock cooling there is no way you want to increase the voltage. With a DD waterblock, you do!


excatly how does one increase voltage on a GPU? particularily this GPU

Depends on the GPU. Some it is a BIOS mod, some it is a pencil mod, some it is a conductive ink mod, and some it is a Variable Resistor soldering mod.

The 8800GTX falls to the last category.

Clicky
 
I can't believe anyone would risk taking a soldering iron to a $600+ video card just to squeeze out a little bit more performance. If the card were near the end of its usable life... sure... go for it. To me that'd be like driving a new Ferrari off the lot and letting MTV's Pimp My Ride get their hands on it that same day.
 
Your analogy would be correct if the person installing your muffler was your 10 year old son. The risk in this instance is too great to overcome the modest potential improvement in performance.
 
Your analogy would be correct if the person installing your muffler was your 10 year old son. The risk in this instance is too great to overcome the modest potential improvement in performance.
Click to expand...

Risk? I routinely solder SMD resistors this size by hand at work 😛

It depends upon the skill level of the modder.
 
Your analogy would be correct if the person installing your muffler was your 10 year old son. The risk in this instance is too great to overcome the modest potential improvement in performance.
Click to expand...

Risk? I routinely solder SMD resistors this size by hand at work 😛

It depends upon the skill level of the modder.

is there anywhere i migh be able to read some more detailed information on this kind of mod, not nessarially the 8800GTX but like i want to know how varible trasistors work, what they look like, and ive been to that link http://www.vr-zone.com/?i=4296 but it doesnt excatly explain in detail what to solder to. or it does and i do not know enough.

EDIT:i do aggree with one of the previous posters though, im not going to mod my 8800gtx untill much later down the road. but i want to know more about it. maybe i can mod some stuff in my old machine and see what it can produce
 
Clicky

How about that? :)

In the final pic, the Molex connector is for taking voltage measurements, the two blue things are the variable resistors, a little screwdriver is used to adjust them.
 
Excellent, thank you. What is the range on the variable resistors?

Rob.
 
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom