GTX280 Volt mods

klambre

Hi everyone, time to push this beast at limit.

Does anyone getting reasonable performance boost with Volt mods?

What cloks, voltages and tools to ?

klambre · 10-15-2008, 16:41 | posts: 1,430 | Location: safe place | User is Offline

Omg, no one?

Maybe I should post on Diehard Overclocking, Cybermancer can move it pls ?

Nihilkrist · 10-15-2008, 17:29 | posts: 263 | Location: England | User is Offline

I think you can get a little more voltage by editing the bios. I'm not sure how effective it is mind ^^

Maybe you should try xtremesystems.

Finny · 10-15-2008, 18:30 | posts: 1,081 | Location: North Dakota, USA | User is Offline

You better have some AWESOME cooling on that baby...

klambre · 10-15-2008, 19:13 | posts: 1,430 | Location: safe place | User is Offline

Quote:

Originally Posted by Nihilkrist

I think you can get a little more voltage by editing the bios. I'm not sure how effective it is mind ^^

Maybe you should try xtremesystems.

Yep, was thinking use Nibitor to volt mod for my card

Quote:

Originally Posted by Finny

You better have some AWESOME cooling on that baby...

This beauty is really hot but Im ready to ride:

I wait some things to complete my rig, while ... searching info to do it

D_worth · 10-16-2008, 00:34 | posts: 1,039 | Location: USA | User is Offline

Now that is bad ass! Clean and slick!! wow how much was the cooler?

chinobino · 10-16-2008, 06:48 | posts: 334 | User is Offline

Hi klambre, I found the highest clock settings for my cards on air cooling.

I took both cores up to 791 MHz but I am only stable at 691MHz. I had the shaders linked and got to 1728 MHz but it was unstable in Windows.

For the shader clock the highest I can go is 1458 MHz. When I try to go up to the next stepping, 1522 MHz, I get artifacts when runing 3D apps. I think this is what determines a 'good' GTX280 from an average one.

Both of my cards get to ~84°C in S.T.A.L.K.E.R. CS and Crysis WARHEAD with stock clocks and fan speed on auto for the stock coolers.

I bumped the clocks up to 691/1458/1242 (from 602/1296/1107) and found that my temps stayed the same, both idle and load.

I edited the BIOS with Nibitor to change the fan settings and dropped my load temps by ~5-6°C.

Then I undervolted both of my cards down to 1.12v for 3D clocks (EXTRA in Nibitor) down from the default 1.18v.

My cards are now running another 4-5°C cooler and that is with the overclock!

I currently have a load temp of ~74°C for both cards with the fan speed ramping up to 80% and 1.12v on the GPU's.

I will be interested to see how you go on water with your card.

If your card can do more than 1458 MHz on the shaders then things will start to get interesting!

klambre · 10-17-2008, 03:06 | posts: 1,430 | Location: safe place | User is Offline

Thanks, much appreciated the help

The cooler consists of two parts, the ram is optional, front side 89€ and 49€ RAM block.

About Volt mods I found a great review, he push the 280 to 804/1620(1645)/2700

:

http://www.forumdeluxx.de/forum/showthread.php?t=504260

LedHed · *Last edited by LedHed; 10-17-2008 at 23:34.*

I've been asking many gurus who have experience through multiple gens of volt-modding NVIDIA cards and they refuse to volt-mod these cards due to heat output. However I don't see why it can't be done if you are on high end cooling. The G92 loved voltage and I don't see why the 200 Series would be the opposite.

Since it's a picture thread, here is what I use to cool my volt-mod:

Also I recommend hardware volt-mods since they can easily be removed and the card can still be RMA. The BIOS mods can completely disable a card and void warranty.

roguesn1per · *Last edited by roguesn1per; 10-17-2008 at 23:37.*

If i had a GTx280 it would be volt modded to the max!!!!!!

804/1645/2700

LedHed

So I'm assuming that is a volt-modded 280. I wonder what type of cooling and what temps the person is getting. On top of that what type of performance increase did they actually see? Some GPUs are very happy with volts and others are not so much (G71 vs G92).

klambre · *Last edited by klambre; 10-20-2008 at 02:42.*

At last, ready to ride

I flashed the bios and set the maximun volt that let me 1.18V, them I made to get stable clocks at that voltage.

The most stable an smooth cloks are 783 (core) and 1566 (shaders), I can hit over 1600 with shaders but is not smooth, becouse getting weird stutter.

About memory clocks is where this water block is strong, I can get stable at 2700

Here a grafic with temps, u can see that this block is really strong at cooling, idle 40, maximun 54 :

This block is really strong, 783/1566/2700 at maximun temp of 54º, who said that GTX280 is hot ?

Ricaspecada · 10-20-2008, 02:58 | posts: 87 | Location: Portugal | User is Offline

Do you need to change the voltage to 1.18v? In my bios is already at 1.18v in Extra in Nibitor...

klambre · 10-20-2008, 03:02 | posts: 1,430 | Location: safe place | User is Offline

Quote:

Originally Posted by Ricaspecada

Do you need to change the voltage to 1.18v? In my bios is already at 1.18v in Extra in Nibitor...

Some retail versions come at 1.18v and litte overclock like XFX XXX edition for example, that is why they sell at high prices.

But is better get a low cost edition and fix

Ricaspecada · 10-20-2008, 03:06 | posts: 87 | Location: Portugal | User is Offline

Quote:

Originally Posted by klambre

Some retail versions come at 1.18v and litte overclock like XFX XXX edition for example, that is why they sell at high prices.

But is better get a low cost edition and fix

My Asus is low cost edition and is at 1.18v lol

chinobino · 10-20-2008, 03:51 | posts: 334 | User is Offline

Hey klambre nice work!

54°C is so low, this is your load temp right? I am very impressed by that water block.

My cards idle at around 43-44°C depending on ambient temp and your overclocked load temp is only ~10°C higher!

If you can get the weird shader issue worked out you have enough temp headroom to go even higher

What scores do you get in 3DMark Vantage?

Maybe I can tempt you to buy another GTX280 to beat my scores...

LedHed

Quote:

Originally Posted by klambre

At last, ready to ride

I flashed the bios and set the maximun volt that let me 1.18V, them I made to get stable clocks at that voltage.

The most stable an smooth cloks are 783 (core) and 1566 (shaders), I can hit over 1600 with shaders but is not smooth, becouse getting weird stutter.

About memory clocks is where this water block is strong, I can get stable at 2700

Here a grafic with temps, u can see that this block is really strong at cooling, idle 40, maximun 54 :

This block is really strong, 783/1566/2700 at maximun temp of 54º, who said that GTX280 is hot ?

54C under a moderate overclock and small volt increase is pretty hot when you are on your type of water setup. I reach the same temps at full load with more volts and higher clocks on a G92, so yes the 200 is hot. You will see the most gain from shader/core increase normally; the memory rarely merits much gain at any type of resolutions. Can you show some FPS benchmarks between stock and your small volt-mod? I'm sure others will be interested to see if the BIOS mod is worth anything at all. However the hardware volt-mod will be where you see the large clocks and voltage.

fearsjohn · 10-20-2008, 13:23 | posts: 987 | Location: atlanta, ga | User is Offline

my 260 overclocked to 702 1512 on a dtek unisink and dtek vga cooler version 1 i get 42-45 full load under furmark. i have not tried to go any higher on the clocks but i probably could. maybe i will try it out and see.

Iarwain · 10-20-2008, 18:19 | posts: 3,048 | User is Offline

Quote:

Originally Posted by fearsjohn

my 260 overclocked to 702 1512 on a dtek unisink and dtek vga cooler version 1 i get 42-45 full load under furmark. i have not tried to go any higher on the clocks but i probably could. maybe i will try it out and see.

How would you be happy with that?! Voltmod!

klambre · 10-20-2008, 19:31 | posts: 1,430 | Location: safe place | User is Offline

Quote:

Originally Posted by LedHed

54C under a moderate overclock and small volt increase is pretty hot when you are on your type of water setup. I reach the same temps at full load with more volts and higher clocks on a G92, so yes the 200 is hot. You will see the most gain from shader/core increase normally; the memory rarely merits much gain at any type of resolutions. Can you show some FPS benchmarks between stock and your small volt-mod? I'm sure others will be interested to see if the BIOS mod is worth anything at all. However the hardware volt-mod will be where you see the large clocks and voltage.

I dont think that temp is hot becouse is taken at ambient temp of 37-38º, that is why the idle temp is 40º, full load temp of 54º is more than reasonable

Is not winter here

, I get an increase in performance of 20% in some cases, that sum to 80% of increase of G200 over the G80 core is twice the power of standard 8800, that is what I seek.

Bios mod is worth thanks to stability of cooler, that let me hit the limit of 1.18V.

LedHed

Quote:

Originally Posted by klambre

I dont think that temp is hot becouse is taken at ambient temp of 37-38º, that is why the idle temp is 40º, full load temp of 54º is more than reasonable

Is not winter here

, I get an increase in performance of 20% in some cases, that sum to 80% of increase of G200 over the G80 core is twice the power of standard 8800, that is what I seek.

Bios mod is worth thanks to stability of cooler, that let me hit the limit of 1.18V.

Wow, sure is warm where you live. I idle my G92 @ 30C, but if you idle at 40C and load at mid 50's then you are getting the exact same increase I see at 1.38V. I wonder what type of clocks you could see with water cooling + a hardware volt-mod instead of a measly BIOS mod which is very shotty at best.

Are there no 280 owners that also own a soldering iron?

let the fun begin.

roguesn1per · 10-21-2008, 01:51 | posts: 9,344 | Location: Aussie Perth WA | User is Offline

In australia Our Day temperture atm is Around 30 degrees

I doubt we could keep a GPU at 30...lol...

My G92 idles at around 45, load is around 60 With 1.4 Volts

cowie · 10-21-2008, 04:32 | posts: 6,231 | Location: new jersey | User is Offline

unless your going for a wr bench i would not bother with a 280gtx vmod.
just cool it down as much as you can it will fly.
hopefully the shader and core clock goes to x2.5 on the 55mn cards that are due out soon.

fearsjohn · 10-21-2008, 13:26 | posts: 987 | Location: atlanta, ga | User is Offline

i would voltmod but i do not see the point it runs everything max at my resolution of 1680. if i was seeing slow downs i would go higher. but it works fine. maybe when i get me a 30 inch i will need the voltmod.

crashed at 759 core and 1512 shader. so i backed it back down. i run it at 666 core and 1458 shader and 1100 mem just fine.

Quote:

Originally Posted by Iarwain

How would you be happy with that?! Voltmod!

klambre · *Last edited by klambre; 10-23-2008 at 04:14.*

I used the Voltage table editor from Nbitor to edit voltages Hex values.

I set Extra mode to 1.19V and flashed the Bios.

First test show me more smooth play at my clocks but Im not sure if this Bios volt modification is working, there any tools to see voltage use of GPU ?