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4850's Stock Temps and DuOrb Temps (With Pics) - Page 2

post #11 of 59
Wow those stock temps were brutal.

My 4850 with 50% idles at 53C, my case temps are currently 34C
post #12 of 59
Quote:
Originally Posted by Brythe View Post
farads is for capacitance
you're looking for "fahrenheit"
LOL, I`m studying Electro-Technics Faculty...I guess it farad is only F word for me...
    
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post #13 of 59
Thread Starter 
Quote:
Originally Posted by homestyle View Post
How hot do those mosfet and vrm chips get with the ramsinks off?

Just curious if those dinky duorb ramsinks do anything. I also have the duorb and the ramsinks are the lightest, smallest ramsinks ever.
Well I don't have a thermometer to measure the temp but I can tell you that touching it without the heatsink after it's been on for awhile is brutally hot. With the RAM sinks on it, it's noticeably cooler to the touch. The reason I put them on though is because the stock heatsink has thermal pads for them so I figured, what the hell. I mean, in all honesty, you want to make sure that all parts stay cool.

The DuOrbs heatsinks aren't that bad to be honest. They aren't the best though but the good packages don't come with the VRM heatsinks only the memory heatsinks so you kinda have to make do with what you have.

Now though, since I put all my fans back in my case, the temps are down to about 30c idle with the ambient temp, more or less, remaining the same. I can't wait to see what my 4870 can do when I get it.

Quote:
Originally Posted by Penicilyn View Post
Wow those stock temps were brutal.

My 4850 with 50% idles at 53C, my case temps are currently 34C
Well I think my Case temps are about 30c normally but it depends on which temp sensor I check in the case. The one near the top is always the hottest as there's only 1 fan there and it's the exhaust. The middle and bottom are always the coolest because there's 5 intake fans (2 x 80mm on back, 3 x 120mm on the side panel) and 4 other 120mm fans blowing air as well and not the mention the fan I've got blowing the air towards the side of the case. So it's a bit off but I'd say 30c is a good estimate.
Edited by KamuiRSX - 7/14/08 at 4:21pm
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post #14 of 59
Quote:
Originally Posted by KamuiRSX View Post
Well I don't have a thermometer to measure the temp but I can tell you that touching it without the heatsink after it's been on for awhile is brutally hot. With the RAM sinks on it, it's noticeably cooler to the touch. The reason I put them on though is because the stock heatsink has thermal pads for them so I figured, what the hell. I mean, in all honesty, you want to make sure that all parts stay cool.

I also put the dourb on my card. I used some heatsinks for the vrm/mosfet chips and I hope it's enough.

While it's loading, can you press your finger on the volate regulator area (the area right underneath the mosfets) for 3 seconds?
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post #15 of 59
You must make sure that you provide cooling to the MOSFETs. Without proper cooling on them, you could damage the card and/or hurt any overclocking possibilities.

I recommend using (part of) your stock cooler if you don't have access to heatsinks for the MOSFETs: http://www.overclock.net/ati/347665-...ml#post4100552
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post #16 of 59
Quote:
Originally Posted by Mootsfox View Post
You must make sure that you provide cooling to the MOSFETs. Without proper cooling on them, you could damage the card and/or hurt any overclocking possibilities.

I recommend using (part of) your stock cooler if you don't have access to heatsinks for the MOSFETs: http://www.overclock.net/ati/347665-...ml#post4100552
How do you know the Mosfets need cooling?

I will say that I agree that we need to put something on there just in case.

Someone should do a temperature test and do a before and after with the mosfets on and off.

At least 1 manufacturer doesn't think we need them.

http://www.asus.com/news_show.aspx?id=11871


I kind of agree with them (assuming you have a good cooler on the card). With the duorb, my core idles at 38C and loads ~50C. Who knows how hot the mosfets were?

But I do know that with the stock cooler, the mosfets were hovering around 90C.
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post #17 of 59
Quote:
Originally Posted by homestyle View Post
How do you know the Mosfets need cooling?

I will say that I agree that we need to put something on there just in case.

Someone should do a temperature test and do a before and after with the mosfets on and off.

At least 1 manufacturer doesn't think we need them.

http://www.asus.com/news_show.aspx?id=11871


I kind of agree with them (assuming you have a good cooler on the card). With the duorb, my core idles at 38C and loads ~50C. Who knows how hot the mosfets were?

But I do know that with the stock cooler, the mosfets were hovering around 90C.

I'm basing this off of the work I did with my X1900XT which had horrible cooling for them. Whenever the MOSFET temps would pop over 75-80C my overclock would freak out and artifact or BSOD. You may be able to run without the heatsink fine at stock clocks, but I seriously doubt that you'll get a high stable overclock from the card.
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post #18 of 59
Yea the stock cooler pretty much sucks.....but I wouldn't expect much considering the cost of the card versus the high quality....they had to cut corners somewhere for that price!

I'll be testing tomorrow with stock air cooling and TIM, then testing with my water blocks and IC diamond.
Results should be brutal.....
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post #19 of 59
I just go with the finger test. If I can touch it for 3 seconds, then it's good to go.
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post #20 of 59
Quote:
Originally Posted by binormalkilla View Post
Yea the stock cooler pretty much sucks.....but I wouldn't expect much considering the cost of the card versus the high quality....they had to cut corners somewhere for that price!

I'll be testing tomorrow with stock air cooling and TIM, then testing with my water blocks and IC diamond.
Results should be brutal.....
Well, I think it's pretty high quality, it is solid copper. It's just that this GPU outputs 10-20% more heat than the HD3870 and has a much smaller cooler and a fan that doesn't kick on correctly.

Aftermarket cooling for the HD48 line is a great idea though.
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