GPU Temps and overclocking

[nivek03]

I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help!


https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharing

[os2sam]

I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help!


https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharing

Use CGMiner and let it manage your engine and memory clocks and your temps.

[nivek03]

I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help!


https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharing

Use CGMiner and let it manage your engine and memory clocks and your temps.

Are there any guides already on the forum to go about doing this? I've played with CGMiner a little, but nothing advanced.

[middlemarkal]

for sha256 you don't need ram so reduce the speed of ram as much as possible. Look up to find the thread on msi afterburner.

if you ovetrclock you generate more heat, reduce the voltage and use standart speed to reduce heat.

more blowers.

[os2sam]

I got my first mining rig setup recently and have a few questions for the experts. I am running two Sapphire 7950s. They come OC from the factory at 925 MHz. and dish out a decent hash rate of near 500. I am using MSI Afterburner and have been playing around with overclocking. At the factory settings GPU1 runs at about 80C and GPU2 70C. It appears that the exhaust from GPU2 (the bottom card) is heating up the card on top (GPU1). Question one, how does overclocking come into play other than the clock speed of the GPU? Do I need to do anything with the GPU memory clock? Question two, what recommendations do you guys have for bringing down the temp of GPU1? Right now I'm just using a box fan with less than stellar results. Link to a pic of my rig is below. Thanks for the help!


https://docs.google.com/file/d/0B_suVvn6l4j2YU0wOEx2NlVNTlk/edit?usp=sharing

Use CGMiner and let it manage your engine and memory clocks and your temps.

Are there any guides already on the forum to go about doing this? I've played with CGMiner a little, but nothing advanced.

Sure, the top post of the CGMiner thread and the readme's that come with the software.  It is full of settings in the executive summaries.  Then it is trial and error to get the best settings for your individual cards.