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Better Cooling for the 7800GTX - Page 8

post #141 of 416
1/18/06 at 11:16pm
I got my Torx set from a guy sitting on an upside down bucket with a small display tray of misc tools at a bazaar in Rio. You know, the usual place you'd get things like that.

-Doc
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post #142 of 416
1/18/06 at 11:31pm
I think Farcry may have crashed because I set FSAA at 8, and I remember something about nVidia having a problem with that?

Either way, I used to play at 1600x1024, 4xAF and 4xAA. I would get frame rates that would dip down into the mid-30's in really high demand areas. (Much higher elsewhere.)

Now I can play at 1920x1200, 4xAF and 16xAA and the frame rates never drop below 55 FPS or so no matter how taxing the area is on the GPU.

Yay me!

-Doc
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post #143 of 416
1/18/06 at 11:44pm
good job doc.
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post #144 of 416
1/18/06 at 11:50pm
Time to start playing with the overclocking a bit more.

What are the stock clocks on the GTX? I bumped it up to 445/1150 as a safe starting point.

-Doc
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post #145 of 416
1/19/06 at 12:38am
out of box 400/1060

regular 440/1200 then 445/1240 for me

I get artifacts @ 1250ish on memory
my core can get up to 472 on "detect optimal" not tested it yet; kind of lost interest in pushing it for a while as I've been on stock since I put As5 on, some cryptic logic about keeping temps down till it cured, but being able to game away

cheers, and fantastic drop there! I went to 77deg C first then it crept back up to high 80s for fear
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post #146 of 416
1/19/06 at 12:40am
How long should it cure at stock temps before pushing it a bit more?

-Doc
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post #147 of 416
1/19/06 at 12:47am

I'm no expert Doc

the temp increase from 77 into 80s got me flashing back to stock and waiting (didnt want to stop gaming, but my logic may be skewed), notes taken from the site below:

Controlled Triple-Phase Viscosity:
Arctic Silver 5 does not contain any silicone. The suspension fluid is a proprietary mixture of advanced polysynthetic oils that work together to provide three distinctive functional phases. As it comes from the tube, Arctic Silver 5's consistency is engineered for easy application. During the CPU's initial use, the compound thins out to enhance the filling of the microscopic valleys and ensure the best physical contact between the heatsink and the CPU core. Then the compound thickens slightly over the next 50 to 200 hours of use to its final consistency designed for long-term stability.
(This should not be confused with conventional phase change pads that are pre-attached to many heatsinks. Those pads melt each time they get hot then re-solidify when they cool. The viscosity changes that Arctic Silver 5 goes through are much more subtle and ultimately much more effective.)

..and they go on about cycling down to normal room temp when the lappie is off as being part of the natural curing cycle
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post #148 of 416
1/19/06 at 12:55am
Thread Starter 
Fantastic Doc! Looks like I'm not even going to bother with the stock solution, I'm going straight to the copper . And yah, while that hardness is great for tight applications, it isn't as good for spanning spaces. Still, 80C is nothing to worry about. Doc, if you want to test your graphics card's true stability, run Far Cry with HDR on. Not only does the game look fantastic, but it will stress the hell out of your 7800GTX. Anyway, glad it worked for ya
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post #149 of 416
1/19/06 at 12:56am
Mine are 450/1250
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post #150 of 416
1/19/06 at 12:58am
Quote:
Originally Posted by basso4735
sears has a beautiful small torx/phillips/regular screw driver set. it has t6-t9 i think, and other various phillips and flatheads. i got it for my xbox modding and i use them all the time now.
the one in the leather case? i bought that one from home depot.
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post #151 of 416
1/19/06 at 3:23am
I am ready to apply AS5, but there is something I want to know first.

If after I apply AS5 and realize that it is too thin, should I simply add more, or wipe it out completely with lint free cloth and alcohol then reapply?
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post #152 of 416
1/19/06 at 3:27am
Wipe it completely and reapply - adding more and blending it in could create air pockets. You can increase your chances of "first try" success by adding a thin coat to the contact area on the heatpipe assembly then twisting both surfaces a bit to ensure any air pockets work their way out.
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post #153 of 416
1/19/06 at 10:20am
I love reading all your ideas K6 and Doc.

What was my question? I just forgot...

Well, I see a lot of people with 7800gtx cores over 500, can we do that too?

Whats up with ATI Tool, whats the differense between errors and deltas?

I belive that higher memoryspeed only has minor performance gains, what is your opinion?
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post #154 of 416
1/19/06 at 11:35am
I thought the only thing you can get in ati tool were deltas?

My core SUX complete BOGUS, these were my clocking procedures:

440/1250 few deltas
445/1200 more deltas
450/1150 only deltas
435/1200 a few deltas every few minutes. (=day of application @ 4:50 first delta, day after application (today) @... 10 min @ 80°)

What's your call? Leave it, or downclock core and upclock memory ^^? Aren't deltas made by lots of heat? My guess is that maybe that little copper plate on the core would help a *lot* here? Would 430/1250 look really weird?
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post #155 of 416
1/19/06 at 1:10pm
Quote:
Originally Posted by Mr. K6
Fantastic Doc! Looks like I'm not even going to bother with the stock solution, I'm going straight to the copper . And yah, while that hardness is great for tight applications, it isn't as good for spanning spaces. Still, 80C is nothing to worry about. Doc, if you want to test your graphics card's true stability, run Far Cry with HDR on. Not only does the game look fantastic, but it will stress the hell out of your 7800GTX. Anyway, glad it worked for ya
I didn't care for HDR, at any setting. It was nice, but a little distracting because it's not nearly as realistic as the idea of it intends to be. But I did test with it. The things that are bright are too bright, even at "2". No matter how sunny it is, matte-black weapons do not glint and shine like that. Again, a nice idea, but not quite implemented correctly yet. I still play with it sometimes just for fun.

I have no problems with temps in the 90's, and I don't know why people worry about that when the throttle threshold is WAY above that. If the temps are within the operational specs, there's nothing to worry about.

-Doc
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post #156 of 416
1/19/06 at 3:22pm
Thread Starter 
Thanks hifiking, we try . If you're talking abou tthe 7800GTX parts, remember that desktop cards have much better components in them (PCB, circuitry, etc) and therefore can clock alot higher. While the ability of the core to do the same is present in the mobile cards (a few have brought their cores up to 500 for 3DMark05), the stability and long term plausibility is lost because of constraints of the small design, mainly in the cooling department. If someone made an overclocking oriented mobile video card with higher quality components, then we could do it .

Master_Axe, divide and conquer my man . Leave your memory at stock, take your core up 5MHz at a time in that 430-450MHz area and see where you get the artifacts. Then leave your core at stock and do the same with your memory (use 20 or 50MHz increments, up to you). Then combine the both and see if they'll work together stably .

Doc, I agree, there are some parts of the game where it just doesn't look right (the research center is WAAAAYYY too blue at times), but for the most point I really liked it. The game reminds me of vacationing to Puerto Rico, good times . And people worry about temps when they overclock because the lower the temp, the more stable the overclock. Running at stock, it doesn't really matter as much
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post #157 of 416
1/19/06 at 3:26pm
Well, deltas look like small yellow pixels, but errors(artifacts) is huge yellow or black areas bouncing around and looks really nasty?

I will try to set memory to default and core as high as possible. And then visa verca.
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post #158 of 416
1/19/06 at 3:30pm
Quote:
Originally Posted by Mr. K6
If you're talking abou tthe 7800GTX parts, remember that desktop cards have much better components in them (PCB, circuitry, etc)
I can't think of any reason why that would be the case. The desktop parts just have better cooling options since they aren't crammed into tiny places.

I would imagine that nVidia's manufacturing techniques and QA are the same for any of the consumer parts they make.

-Doc
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post #159 of 416
1/19/06 at 3:33pm
Thread Starter 
Quote:
Originally Posted by Doc.Caliban
I can't think of any reason why that would be the case. The desktop parts just have better cooling options since they aren't crammed into tiny places.

I would imagine that nVidia's manufacturing techniques and QA are the same for any of the consumer parts they make.

-Doc
For those that follow reference designs, there is no difference. However, many manufacturers put their own tweaks into their cards so that they do perform better. Cooling is the main issue here, but again, getting that circuitry into a smaller form factor doesn't help overclocking either.

hifiking, I'm not quite sure, but don't take ATiTool to be the end all. Make sure that you test in newer games too .
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post #160 of 416
1/19/06 at 3:50pm
Quote:
Originally Posted by Mr. K6
For those that follow reference designs, there is no difference. However, many manufacturers put their own tweaks into their cards so that they do perform better. Cooling is the main issue here, but again, getting that circuitry into a smaller form factor doesn't help overclocking either.

hifiking, I'm not quite sure, but don't take ATiTool to be the end all. Make sure that you test in newer games too .
so in your opinion if I error out after a few minutes with atitool, but for example run nfsmw at 1600x1200 with all eye candy turned up and don't have any artifacts it should be ok? I haven't had a chance to test with any other games as I just got my 7800 installed yesterday, and nfs is my most recent game, but I will check it more with fear. This was at 460 core and 1250 memory, it got up to about 93c but never got hotter than that. After gaming for about 2 1/2 hours straight it stuttered once or twice but never worse than just a second, but the most the core and memory will do is 435 /1200 in ati tool without errors. Should I stick with 435 or bump it up some?
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