Glad you took the recommendations Dan. I just added a second 560ti today.

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Executive Director GPU Users Group Inc. -
brad@gpuug.org

I hope you like the card long-term and that we didn't lead you astray. Unless something drastic happens that will be the card I buy next.

SHORT VERSION: I think you should play with your case's airflow, not necessarily increase it.

If you know what I mean, you don't need to read another sentence of my tome.


LONG LONG VERSION:

I think you may have an issue I've been fighting and I've gotten some very unexpected results doing a lot of tinkering trying not to spend any money.

I don't own a 560 Ti, but I'm not a big fan (no pun intended) of your card's being 73 degrees C with the fan running on full (especially since you got the dual fan version).

Case #1 - added fans; added more fans; added fans where fans aren't even supposed to go; opened slots, closed slots, bought a useless fan that takes up two expansion slots and blows cool air into the case. By the time I was finished it was too loud. I changed the rear exhaust fan's speed DOWN to try and kill some noise and the temps dropped. Apparently I was beating the air and not moving it.

I was happy for a short time. For no reason other than ambient room temps climbing by a few degrees, everything started heating-up again and started running the CPU fan very fast and was very loud. (you wouldn't think a few degrees could make that much difference, but they did)

Finally, I just couldn't stand it. I went and bought an Antec 300 computer case at Best Buy. It's $70, no power supply, but has a nice big fan on the back of the top (bottom mount power supply), a nice big fan on the back of the back, room for two 120mm fans on the front, and even a place for a 120mm (I think) fan on the side.

I transferred the system into it, added the two fans up front blowing in, I think I've done the best I could do - fired the system up and... "Huh?" The video card temp dropped just a little bitty bit, the CPU temp didn't drop at all.

I say again, "Huh?" How is that even possible? The CPU fan was still running fast and making noise but there really wasn't that much heat coming out of the exhaust fans on top or back even though there was air-flow. The front two fans were blowing in like they should be. The video card temp fell a few degrees.

Ok. Now I'm getting hacked-off. I replaced my upgraded CPU cooler with a different kind - one of the ugly ones that the fins are hanging on the copper heat pipes ($25 at your favorite store) standing above the CPU. You know the ones - looks like the heat pipes are legs and an 80 or 92mm fan is clipped to the fins blowing through them instead of down on them.

That fan is now blowing UP through the fins and toward the top exhaust fan.

Mick Jagger may not be able to get no satisfaction, but I've got some. If you try a lot of times, you just might find you get what you need, too. The air from the top exhaust fan is warm, from the back is really not, from the power supply really isn't - I was good to go.

Here's why I wrote all that:

With this arrangement my GTX 460's fan throttled back to 49%. It had been running at 70%+. Temps dropped from mid and high sixties C to mid 50s C (with two WUs running) on the GPU.

Since the new CPU cooler fan is bigger it runs slower. CPU temps didn't really change much, but they weren't really high, they were just making the old fan run faster and louder until I changed things, and that really wasn't an upgrade, just a change to something different.

My point in writing all that and making whoever is still reading read it all isn't to tout a specific product (although I do like this case and it's cheap).

I just wanted to point-out that experimenting with "things" with cooling is a good idea. You might have to reverse the direction of a fan, or like I did, slow one down to get better cooling, or even turn one off to get the air moving through the case evenly and the heat has a chance to exchange to the air and move out of the case.

I'll bet you can get those temps or fans speed, or hopefully both, down on that GPU.

I am just guessing that at 70+ degrees C, there's either hot air, or not enough air, under that card OR there's no place for the air to go, or the two fans are whipping air that can't move.

Yes, I know you are nowhere near the top of that card's maximum operating temperature and maybe 73C is the best a 560 Ti will do, but I have my doubts at 100% fan speeds.

I will also be playing around with the fan config. I think I need to reverse a couple of the fans and it will improve the temps on the GPU. I have a ThermalTake Dokker case. I add the fans to the side blowing out and the front blowing in. I think if I reverse these, the gpu will be feed nice cool air from the outside and the front will pull out the heated air from the end of the card. The H70 is mounted as intake in the back top location with an exhaust fan in the top front spot.
Thanks for the input.
Dan

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Huh... all this time I did not know that one could crunch more than one WU concurrently per GPU.

I have two 9800GT cards (the third one is going back to EVGA for being naughty and frying one motherboard and several PSU's and driving me bonkers for two weeks.

Would running more than one at a time be beneficial?

Edit: Oh great.. and I go post in the wrong thread. My mind is as broken as that card. :^)

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Sorry but 9800s are not capable of running more than one at a time. I don't believe any of the pre fermi cards can but I may be wrong.

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PROUD MEMBER OF Team Starfire World BOINC

Sorry but 9800s are not capable of running more than one at a time. I don't believe any of the pre fermi cards can but I may be wrong.

As best I know, you are correct.

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"Time is simply the mechanism that keeps everything from happening all at once."

Thanks for the fast replies. :^)

At least I didn't miss out all this time!

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I will also be playing around with the fan config. I think I need to reverse a couple of the fans and it will improve the temps on the GPU.

That's a nice case. If you can't make that breathe I'd say you're living someplace with no air.

I'd be interested in knowing what your temps are after you get it the way you want it.

Bret

Just to do a little bit of bragging, I just cranked my little GTS 450 up to three at a time. Only added about two or three minutes to the completion time on the shorties and maybe ten to fifteen minutes to the mid range work. I love my little toy! :-)

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PROUD MEMBER OF Team Starfire World BOINC

I will also be playing around with the fan config. I think I need to reverse a couple of the fans and it will improve the temps on the GPU.

That's a nice case. If you can't make that breathe I'd say you're living someplace with no air.

I'd be interested in knowing what your temps are after you get it the way you want it.

Bret

You aren't far off at the moment. The last time we tried to use our ac it didn't cool at all. So for the moment, we are without ac. At least it is down in the 50s at night so the house can cool back off. The ac will be fixed just in time for the next cool down. Oh well.
Dan

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Sorry but 9800s are not capable of running more than one at a time. I don't believe any of the pre fermi cards can but I may be wrong.

sshhh, don't let my my 8800 GTS hear you. I was running 2x for a while last year. No problems, and no benefit either. In fact, with only 512MB of ddr3 on it, 2x was slower than normal, 3x was wa-a-a-y slow.

[edit] this was more just for experimentation than any other reason. I wasn't expecting miracles....[/edit]

Martin

"k"?? Welcome to the 80's...Lol