Graphic Cards How do I get rid of artefacts in games???

N

Nikhil

Explorer
I have a BFG 6800GT OC. It is factory overclocked to 370.(from 350).

When I overclock it to even 418/1130, it shows artefacts in 3dmark 05. And this is not even an extreme overclock

What can I do to make sure there are no artefacts????

What is the main cause of artefacts??? Heat or other factors????
 
mostly heat.. if it artifacts at stock rma the card . try and improve your case airflow as well

if you are willing try removing the heatsink and cleaning and apply as5 .
 
It is not at stock..... at stock, it is perfectly fine......

It is at slightly higher speeds. And BFG are actually known for their overclockability.

DAMN!!!! What is wrong with my luck.???

My CPU is a dud(I am damn lucky to extract 2.5 GHz out of it), my GPU does not overclock as well as it should........
 
BFG cards although are factory OC'ed but i see a lot of users struggling with oc'ing the cards further than the speeds they are already at.

@Nikhil: If you are interested in Ocing the card further, then i suggest you get a good cooler like the Nv Silencer 5 and follow bottle's advice on the case cooling and as5 ;)
 
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Dude the NV40 core maxes out at the 400mhz level esp. if it has all the 16 pipes and 6 shaders enabled.Thats why they have so many 6800GTs and so few 6800ultras in comparison.Ur OC is not bad at all.Only few cores reach >400mhz and even fewer anything greater than that.Thats why the core frequencies were dropped from the 450mhz initial level to 400-425 mhz for the 6800U.
U could try a bios with higher voltages for the gpu(mvktech.net),but that is always risky.
 
NOt right away.......

Will try all other options before trying to kill my card ;). Seriosuly, I think it is too risky..... Will try getting an nv silencer 5 by hook or crook.

And the 450MHz version of the 6800 was called the Ultra Extreme. It came out in very very very small numbers.

Nikhil posted 4.17 minutes later:
The first and most obvious conclusion is that this video card(6800 GT runs seriously hot. At 82ºC under load with the stock heatsink, it was nerve-wracking just to monitor the temperature. However, this GPU has a throttling function on overheat, and the threshold is set at 120ºC by default, so I guess that even 80+ºC can hardly be called OVERheating. With the NV5 in place, temperatures were far better. It only came in at 4ºC under the stocker at idle, but under load, that margin grew to 14ºC as the NV5 proved its mettle, holding the nuclear GPU to "only" 68ºC. A side benefit of the NV5's exhausting heat to the outside of the case is that our interior case temp dropped a bit (1-1.5ºC), and even the CPU ran a bit cooler
Click to expand...

Source ---- http://www.systemcooling.com/nv_silencer5-04.html

So, I guess an nv silencer 5 will certainly be worth it.

You guys have any other experiences to share???

Nikhil posted 4.37 minutes later:

OK.... Anybody know of any s/w to keep track of GPU temps??? Apart from the standard one which I get by right clicking on any point on the desktop......

I want one which can track the temps over a period of time.......
 
Dont go by what you see on american or european forums.
Most of the times these guys have room temps much lower than us.
Case open is not the best solution, have a closed and properly ventilated case.
And there is nothing special about BFG when it comes to overclocking.
I had EVGA 6800GT which is not with Daviescool( a member here ). it easily reached 425Mhz without any kind of vmod.
What kind of temps you are getting at the moment.
Use rivatuner and monitor your peak temps in games.
If its going above 75-80 then first try to get temps lower.
first just try removing the HSF and applyting AS5.
And remember each card is different. Your may not be extremely good overclocker.
 
I have read that AS5 should not be applied on the RAM chips and only on the GPU core. SO, what do I apply on the RAM chips???

I have a tube of thermalright thermal goo given with my XP-120. It ius white in colour and much thinner than the AS5. It is recommended that I apply this on my CPU surface and spread it out evenly. So, can I use that on the RAM sinks???

There is no other info goven on the tube abt what it contains. All it is written is Thermalright. And for more instructions on how to use this, visit thermalright.com
 
well i used arctic alumina on chips. but ya you can use a thin layer of that whie goop on RAM.
The reason why AS5 is not recommanded on RAM is that if it drips it does into RAM IC legs and shorts the RAM.
 
AS5 is available for ages here.
Atleast for last couple of years i am able to buy it locally.
It costs around 650-670. In some places i have seen smaller 2.5gm tube for Rs.500.
 
@Nikhil, if you want to keep a track of your GPU temps, the best possible way is to download RivaTuner and switch on Harware Monitoring. This shows a neat graph of the GPU temp, ambient temp and a few more things. You can even record it for later display.

The desktop right-click thingy will not give you in-game readings, so there is no point in looking at it to check your load temps.
 
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What is the max safe temperature for a 6x series card ?

My average temp is about 54, but while playing it moves upto about 62-64.

Is that fine at stock settings ?
 
anishcool said:
What is the max safe temperature for a 6x series card ?

My average temp is about 54, but while playing it moves upto about 62-64.

Is that fine at stock settings ?
Click to expand...
Your temperatures are quite fine anish ! The cooler on the gainward is doing a fantastic job !
 
@jai --- I already tried that after Funky told me abt that. I found that the max temp is going to 82-83 deg C. So, I guess, I will remove the heatsink and use some AS5.
 
lol...old xfx 6600gts (agp) used to go upto 120C! before they replaced the heatsink. you guys shouldnt worry too much.
 
Not really.
Higher the temp, fater the hardware is dying.
Thats why there were soooo many 6600GT AGP failures.
Above 80C is cause of some if not extreme concern.
Thats why i did not like the HSF design of BFG. Those 2 fans dosent really help a lot.
NVIDIA stock HSF does a very good job.
 




This was how my graphics card was when I opened it up. Now, I have used AS5 on the core and some other white goo on the RAM chips. The idle temp is down to 56 from 61.

Still need to see abt the load temps......

Nikhil posted 13.67 minutes later:

I ran 3DMARK05 at these speeds ---- 417/1130.

And the load temps never went above 74 deg C. I still got artefacts. Why????

Nikhil posted 0.68 minutes later:

Will it help if I decrease the core speed slightly and increase the memory speed??? the mem speed has a lot of capacity still...........
 
Nikhil no amount of cleaning , cooling , etc will help you much in o/cing "any further" to a significant extent.
The only thing that will "really" benefit is a volt mod for ur card.
using the Arctic cooling VGA Cooler will help you in raising your overclocks by a "few" points more thats all. so consider that before you spend the 2.5K for it. ideally if you volt mod ur card , which raises the core and the mem temps, only then the performance of arctic cooler be worthwhile.
anyways if i were you i would o/c the card only for benchmarking purpose. for day to day gaming i would mildly o/c keeping the cards cost in mind.
 
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