Arctic Cooling Accelero S1

[octopus41092]

I just installed the Accelero S1 on my HD4850 and the GPU runs a lot cooler. I'm also using a 120mm Ultra Kaze on it, which pushes about 140CFM. My case airflow is decent, but not super.

I can overclock the GPU to the max allowed in catalyst, which is 700 with no artifacts or anything (checking using ATI Tool), but whenever I raise the memory it becomes unstable or has artifacts. My way of testing stability is using a run through of 3DMark06. So, the problem for me is that I'm running it and then all of a sudden I get a no signal imput to my monitor and I have to reboot. It never goes above 55C for the GPU even when overclocked to 700. I don't think the temps would be a problem on the GPU anyways because the stock one ran up to almost 85C and was perfectly stable.

One thing I thought of is that the voltage regulators don't have heatsinks on them. But on the Arctic Cooling website they said that even without them it runs fine. I doubt thats the problem but could it be a possibility and if so how would I go about cooling those

Could it be that I applied them incorrectly or are the RAM sinks not that good. I just took off the tape on them and applied them to the memory. Is that the correct way to apply them or are you supposed to use some thermal paste as well. I was thinking of using some but then it wouldn't stay on. Any suggestions, comments, or ideas on why the memory might not be cooled sufficiently or why its not overclocking properly?

 

[error8]

The memory doesn't have to overclock to much. It's not a MUST. It may or it may not, with or without additional cooling. Increasing its voltage may give you extra overclocking room. If you've cleaned the memory chips with some alcohol before applying the ram sinks, then you've applied them correctly. 😉
Like it says on the site, the PWM area works very well without anything on it. The stock cooler, even though it was covering that area and ram chips too, because of that extra heat coming from the gpu, it was also keeping everything else very hot. So the ram and PWM chips will actually be cooler even if there is nothing on them, with the S1 installed. The flow of air provided by the 120mm fan is just perfect for cooling everything from your card, way better then the stock "heater" used to do it.

 

[Tullphan]

Go to this thread & about 2/3 of the way down the first page "SteelSix" has a post about how to make sure the ramsinks stick the first time around. It was posted on 6/23 @ 10:59, if that'll help you find it.
The post makes sense & i'm going to use that method next time I put ramsinks on.

 

[octopus41092]

Originally posted by: error8
The memory doesn't have to overclock to much. It's not a MUST. It may or it may not, with or without additional cooling. Increasing its voltage may give you extra overclocking room. If you've cleaned the memory chips with some alcohol before applying the ram sinks, then you've applied them correctly. 😉
Like it says on the site, the PWM area works very well without anything on it. The stock cooler, even though it was covering that area and ram chips too, because of that extra heat coming from the gpu, it was also keeping everything else very hot. So the ram and PWM chips will actually be cooler even if there is nothing on them, with the S1 installed. The flow of air provided by the 120mm fan is just perfect for cooling everything from your card, way better then the stock "heater" used to do it.

Ok, so how would I go about increasing the voltage on the video card. Do I use a third party program or modify the BIOS? If I have to modify the BIOS how to I flash it in case I mess something up?
What programs are the best because a lot of them aren't compatible with the HD4850 yet?
Also, if the GPU temps are low, at least compared to the stock cooling, but I'm getting some artifacts would I want to increase the voltage to the GPU in order to increase stability?