awalleyeguy

  Not bad for ambient of 78F  1x 470

Nice run! What clocks are you running on the 470.

expedision

awalleyeguy

  Not bad for ambient of 78F  1x 470

Nice run! What clocks are you running on the 470.

790/1800

Success! I finally finished the chiller, and had a few hours to get some testing in last night. Thanks to the "get it colder" crew for all your help and pointers. (Especially Nate man!)  I put vaseline on the frosted areas discovered during testing, and it worked really well. Very little condensation on the dvi and sli connectors. Everything else was bone dry.  I actually didn't need the shop towel hanging out of the back of the gpu.

The chiller tops out at -26C when under load with 1 cpu and 1 gpu. This is the temp of the liquid in the cooler, not at the blocks. Using eleet it reports cpu at -23C, but I don't know what the cores are at...what's the best way to monitor that? Precision reports 1 gpu at -5C and one at 8C (I think that one is stuck, since it never changed).
 
Flow rate seems ALOT slower with the cpu block now in the loop, even at room temps it's just a dribble......well, it works @ -26C, so I guess I can't complain. I'm not sure what I'll find when I get the other 295 prepped and add that to the loop.

I spent most of the 2 hours benching trying to figure out this 980x cpu...only managed 4.8Ghz, which I'm not too happy about considering the temps. Of course more testing, testing, testing. I did manage to get in a few vantage runs (couldn't stop without first doing that, LOL!)

Here's the mess. No more pretty system Ah, who cares, temps are @ -26!  



Last night Hwbot was down, and I thought for sure this was the #1 single 295 winner, so I went on to other things. Dang, I'm still off 87 points. Oh well, more fun for another night.



I haven't run any physx-on runs with the single 295, so as the chiller was "warming-up", I thought I'd run one for grins. I bumped the cpu back down too.  Not too bad for the chiller being turned off 30 minutes before....liquid temps here started out at 17F and ended the run at 22F. It took 30 minutes to bring the liquid from -26C to -5C (22F) by continuously running vantage. I thought that might be the smartest thing to do rather than just turn everything off and go to bed. I ended up turning the computer off 35 minutes after I turned the chiller off. Liquid temps were 29F at that point.  I left it with 2 house fans blowing on it overnight just to be safe. 


Now I just gotta get that other 295 prepped.....and work on this cpu.

great going !!

what was the cpu temp sitting at during your vantage run. and what was the over clock on the cpu at?

CPU was at 4.8Ghz (4788) @ 1.7 vcore.  With the limited time I had last night, I wasn't able to get the vcore down.  Before (on ambient water temps) I was at 4692 @1.74 and anything below that would not work.  At least I'm a little lower in vcore.  But, it's probably borderline @1.7 because I got a fair amount of BSOD 101's.

I'm not sure what cpu temp was during vantage...I never run those programs during the benchmark being that it might lower my score.  What do you run for temps?

i use real temp and eleet
i put both programs up and off to right.
when the test switches to test 2 cpu. for a brief second you can see where your temps are.
after it finishes...you'll see the max temps and what your current temps are...
then you would slowly back down voltage from there or keep upping mhz till it crashes. up a few mhz, then do a cpu test only...pass...try a bit higher.(i know you know this...but sometimes i like to see it on the screen...lol)

Do you guys always run your benches with monitoring programs up? I have always thought that they would decrease the performance slightly...

I don't know why I forgot about eleet HUD for monitoring.  I remember when sidewinder created that, but have not needed to use it since I kind of knew the 920 like the back of my hand.

@rabid:  John's just talking testing, not going for a score

Thanks for the clarification.

yep..testing...to get an idea of how well the chiller is holding temps against the cpu or if the cpu is getting carried away.
you can use the cpu temp off the board, but that's is the tcase temp....so at 50c..your cores will be anywhere from 60c to 80c from there.

although...i have been known to run it will benching for scores..to see if it had any real effect....and i found that it really didn't..since i got a 7th place rank using it (5970)