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Old 03-01-11, 10:24 AM   #1
ragejg
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Default CNPS 9700 modifications

I've seen the CNPS 9500 mods...

http://www.overclock.net/air-cooling...-st3r0ids.html



... and that's totally cool, it's great that some have gotten even better airflow this way; but I think I want to be fine with the push fan that's in my CNPS 9700 right now...

...but to me, it seems empty on the "pull" side.

I just got one and it's going into a retro rig, a 939 setup with an Opteron 175 (hopefully nicely OCed with heat spreader removed) and an AGP HD 3850.

Now, due to this cooler having different mounting options, I'm a little puzzled as to what to do... if I mount it like most coolers, blowing air toward the case's rear exhaust fan, then I see the benefits being that it's sucking warm air from near the RAM, and also blowing all it can across the MOSFETs on the way out. ... but then there's the concept of laminar flow; heat traveling upwards, and I have to wonder if mounting it so it sucks from above the graphics card and blows up into and through the power supply would be better.

Any suggestions on that?

And furthermore, I have my primary rig set up with a KingWin XT-1264, a darn good direct-touch cooler which I have set up with a push-pull setup that works really good. ...My question is do you think the copper CNPS 9700 would also benefit from being set up this way? I was thinking about taking an 80mm that flows more air than the Zalman's 92mm and cutting the corners at angles so it fits in the concave end of the cooler.. I'd secure it somehow, but I have to wonder if it'd be worth it, as I know that Zalmans behave a bit differently than most coolers, and an all-copper design also has different thermal flow properties.

Thanks in advance.
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Old 03-01-11, 11:03 AM   #2
Bman212121
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Default Re: CNPS 9700 modifications

Unless you're really trying to OC that Opteron then it isn't going to be worth messing with the fan too much. I'm not even sure if you can mount the zalman pointed up and down unless the mount points are square. The bracket for that cooler goes between the heatpipes so it really only mounts in 2 directions.

I have a CNPS9700 on a Q6600 and it seems to hold the temps on that just fine. It's not OC'ed though and technically that opty has a higher TDP even though it has less cores. That cooler was powering an FX-60 at 2.75GHZ at one point, so stock configuration should allow you to do the same.

FYI the 9700 uses a 110MM fan instead of the 92mm that's on the 9500. It's quite a bit bigger cooler.
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Old 03-01-11, 11:23 AM   #3
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Default Re: CNPS 9700 modifications

I've seen it mounted so it pushes air out the rear...

But when I put together the parts that Redeemed sent me (my old A8V and HD 3850 AGP, grey_1's Opteron 175 & also the CNPS 9700), just to have it assembled (not running the rig yet, I'm still working on the WaveMaster project)... it was set up to blow the air up into the PSU.

Like so...



I'm not sure that this system is going to use the old Cybertron case (yup, I still have it), but wherever it goes (possibly into the modded Wavemaster OR my Tuniq 3 if the Wavemaster proves to be superior aft er the mods), I'll be making a really earnest attempt at some aggressive clocks.
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Old 03-01-11, 11:09 PM   #4
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Default Re: CNPS 9700 modifications

Quote:
Originally Posted by ragejg View Post
I've seen it mounted so it pushes air out the rear...

But when I put together the parts that Redeemed sent me (my old A8V and HD 3850 AGP, grey_1's Opteron 175 & also the CNPS 9700), just to have it assembled (not running the rig yet, I'm still working on the WaveMaster project)... it was set up to blow the air up into the PSU.

Like so...



I'm not sure that this system is going to use the old Cybertron case (yup, I still have it), but wherever it goes (possibly into the modded Wavemaster OR my Tuniq 3 if the Wavemaster proves to be superior aft er the mods), I'll be making a really earnest attempt at some aggressive clocks.
Umm yea I guess you can mount it like that, but that is not how they are supposed to be mounted. The mounting bracket can only go in the one direction, but there is enough clearance under the fan where it doesn't hit the bracket. The only issue with the way it's mounted is if you don't have it tightened down well the cooler can twist. With the cooler mounted the other direction it kind of locks the bracket between the heatpipes.

Seems to me like that's a really bad idea how it's currently mounted since you are dumping 50 - 60C heat into a device which already sucks and is probably only rated to run at 50C to begin with. As long as you have airflow out the back of the case there shouldn't be a lot of need to rely on convection to disspate your heat. I'd be willing to bet that you can easily overcome standard rules of physics with an 80mm fan.
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Old 03-06-11, 07:07 AM   #5
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Default Re: CNPS 9700 modifications

Quote:
Originally Posted by Bman212121 View Post
Umm yea I guess you can mount it like that, but that is not how they are supposed to be mounted. The mounting bracket can only go in the one direction, but there is enough clearance under the fan where it doesn't hit the bracket. The only issue with the way it's mounted is if you don't have it tightened down well the cooler can twist. With the cooler mounted the other direction it kind of locks the bracket between the heatpipes.

Seems to me like that's a really bad idea how it's currently mounted since you are dumping 50 - 60C heat into a device which already sucks and is probably only rated to run at 50C to begin with. As long as you have airflow out the back of the case there shouldn't be a lot of need to rely on convection to disspate your heat. I'd be willing to bet that you can easily overcome standard rules of physics with an 80mm fan.
I'm trying to properly understand what you're saying....

But remember, that's not the case this setup will end up in (this will go in my Tuniq 3 or my modded WaveMaster), and that's certainly not the PSU that I'll be using (I'm likely gonna be getting one of the best 939-era PSUs).

I do get what you're saying about blowing already hot air into the PSU; but I kinda figured that happened anyway in some form or fashion, so I thought if you made that air quicker it's be cooler, and would exit the PSU faster.

And yeah, I was trying to think of the concept of laminar flow. I was thinking about how warm and stagnant the air gets by the northbridge above the GPU, and honestly I've never really had heat problems in the RAM area before, so I was thinking about switching air removal/movement over to near the northbridge/above the GPU.

What do you mean by "I'd be willing to bet that you can easily overcome standard rules of physics with an 80mm fan."?


FWIW I'm getting some help over @ XS with regards to hobbyist/OCing mad scientist-style overclocking of 939-generation parts. I didn't try hard enough at OCing my 2008-2009 x2 3800+/A8V Deluxe/AGP 3850 rig, or my 2008-2010 x2 4800+ & Opty 165/A8V Deluxe/AGP 3850 system... I was only able to get 2.3-2.5 out of the 3800 and Opty 165, and I really couldn't hardly OC the 4800 at all. I hand-picked all the components for both of those rigs and ended up with systems that served my needs as well as my hobbyist-ish desires, but I didn't quite get things together good enough to get good OCs that others were getting out of Socket 939.

I sure as heck wish there was an FX-60 floating around somewhere for me. Oh the things I would do with an x2 939 chip with an unlocked multiplier.

... and I do recognize the possibility that if I really want to do a "last hurrah" 939 project and really get the best clocks, maybe the K8T800 chipset might not be my best bet... I migrated to this chipset in '08 due to having Vista compatibility problems with NForce 3 Ultra.
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Old 03-15-11, 05:05 PM   #6
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Default Re: CNPS 9700 modifications

I got a CNPS 9700 cooling my old Q6600 and it is overclocked to 3.2gigs and it cools just fine.
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Old 03-16-11, 12:07 AM   #7
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Default Re: CNPS 9700 modifications

Quote:
Originally Posted by ragejg View Post
What do you mean by "I'd be willing to bet that you can easily overcome standard rules of physics with an 80mm fan."?
What I meant was that it is common knowledge that hot air rises, so logic says to mount your fans accordingly. My point was that you should be able to push hot air in any direction as long as their is airflow.

What I'm trying to get across is that pointing the cpu fan at the PSU will only increase the power supply temperatures. When you add heat to something the temperature can only go up and not down. The faster the airflow will bring down the CPU's temperature by taking the heat away from the CPU and adding it into the air. That means the air coming from the CPU will always be hotter than when it entered it. So if the CPU and power supply both pull from the same air they will have the same starting temps. If the power supply has to pull air from the CPU it will always be hotter than air it can get from the case.
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