Gigabyte GTX 460 1GB (GV-N460OC-1GI) SLI HELP!

[Lindrian]

Hello.

I have two of the cards in the title in SLI in my Antec 1200. I love the cards, they perform well and they are silent - but there is one downside. They reach over 92C under heavy load and after some time my screen shuts off and I have to reboot my PC. Is there a way to make the fan spin faster? It is capped at 70% right now.

Best regards.

[Dark Mantis]

I take it that you are referring to the fan on the cards? That I really don't know about but I would have thought it would be possible. The other option is to try and cool the whole case a bit more. Feed a bit of cooler air to the cards fans.
Other than that you are going to have to start looking at liquid cooling for them. A much quieter and more efficient way of cooling. You can check out my website for pictures of my machine: http://www.darkmantis.co.uk

[Lindrian]

Yes the fan. I have my Antec 1200 filled with fans, I reckon that should be enough really... I don't want to watercool, way too expensive...

[Dark Mantis]

What is the exact model number of the cards? Also are you overclocking your system at all?

[Lindrian]

What is the exact model number of the cards? Also are you overclocking your system at all?

My CPU is overclocked. The graphic cards have a mild factory over clock. The model number is GV-N460OC-1GI

[Enkal]

How do you have your cards placed in your box? I've read that people have issues if there is no space between the cards.

[Lindrian]

How do you have your cards placed in your box? I've read that people have issues if there is no space between the cards.

I have them in a Asus P6TD Deluxe. There is about 4-5cm between the cards.

[Dark Mantis]

What is the exact model number of the cards? Also are you overclocking your system at all?

My CPU is overclocked. The graphic cards have a mild factory over clock. The model number is GV-N460OC-1GI

I have checked up but can't find any info on increasing the cards fans speed. The only place it could be would be the Advanced propeties in the control set.

It's quite possible that the only way would be to hack the registry directly.

[Lindrian]

What is the exact model number of the cards? Also are you overclocking your system at all?

My CPU is overclocked. The graphic cards have a mild factory over clock. The model number is GV-N460OC-1GI

I have checked up but can't find any info on increasing the cards fans speed. The only place it could be would be the Advanced propeties in the control set.

It's quite possible that the only way would be to hack the registry directly.

That sucks... Gigabyte should really fix their product.

[Dark Mantis]

Have you installed an extra 120mm fan in the side to blow directly onto the graphics cards?

Also is your airflow balanced? It isn't enough just to have lots of fans if they aren't setup in the correct way. You need to make sure that there is a general flow of air from one end of the case past the components and out the other end.

[Lindrian]

Yes, a fan on the side destroys the airflow and actually rises temperatures.

This is my current setup, without a side fan: http://img186.imageshack.us/img186/5506/swec2.jpg

This is just a photo of the lower end of the case. I have another 120mm exhaust fan at the back and a 200mm on top.

(The siluette of a fan over the Graphic Cards is where the fan would be on the side, if i placed one there)

[Dark Mantis]

In general good. Just check that your PSU is sucking not blowing because that will heat up the cards. The other choice is to put a fan at at the end of the cards blowing down between them in the direction of airflow at present.
How have you got the large 200mm fan at the top? Is it sucking or blowing?

[Lindrian]

In general good. Just check that your PSU is sucking not blowing because that will heat up the cards. The other choice is to put a fan at at the end of the cards blowing down between them in the direction of airflow at present.
How have you got the large 200mm fan at the top? Is it sucking or blowing?

The PSU (Corsair HX850W) sucks in air, it does not blow how air into the case.What do you mean (the bold part)? Any sample?

The large 200mm at the top is an exhaust.

3 intake 120mm at front, 2 exhaust 120mm at back, 1 exhaust 200mm at top

[Dark Mantis]

Yes you are correct about the HX850, I have just checked mine. So basically you have a negative pressure scenario in your case which isn't going to help.
You have 1x 200 exhaust, 1x 140(PSU) exhaust, 2x 120 exhaust
against 3x 120 intake.
Just doesn't balance so the airflow wont be smooth.

Regarding the extra internal fan I suggested I thought that you could make a bracket to fit it on the right hand end of the graphics cards near the hard drives in your photo.

[Lindrian]

Yes you are correct about the HX850, I have just checked mine. So basically you have a negative pressure scenario in your case which isn't going to help.
You have 1x 200 exhaust, 1x 140(PSU) exhaust, 2x 120 exhaust
against 3x 120 intake.
Just doesn't balance so the airflow wont be smooth.

Regarding the extra internal fan I suggested I thought that you could make a bracket to fit it on the right hand end of the graphics cards near the hard drives in your photo.

The case comes with a mounting bracket for a 120mm fan at the end of a HDD cage. I added it right infront of the graphic cards, which oddly enough made no difference or just increased temperatures (i did make sure the fan was blowing at the right direction, I'm not a noob :p).