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  #121 (permalink)  
Old April 26, 2008, 10:11 AM
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A note about installing the 3870 x 2 on XP Pro

If you are going to install this card, have Net Framework 1.1,2 ect installed and the lastest ATI Catalyts driver downloaded on your machine PRIOR to plugging in card.
The XP Pro Default VGA Driver makes the card run Extremely hot, once the ATI drivers are installed it returns to almost bearable temperatures.
Do not take your time getting the ATI drivers installed.
Then install RivaTuner to bump the base fan speed up to 35-40%
IMHO The factory ATI fan speeds are a deliberate attept to cook cards to reduce longevity and increase profit.
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  #122 (permalink)  
Old April 26, 2008, 10:43 AM
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Quote:
Originally Posted by Shredder View Post
A note about installing the 3870 x 2 on XP Pro

If you are going to install this card, have Net Framework 1.1,2 ect installed and the lastest ATI Catalyts driver downloaded on your machine PRIOR to plugging in card.
The XP Pro Default VGA Driver makes the card run Extremely hot, once the ATI drivers are installed it returns to almost bearable temperatures.
Do not take your time getting the ATI drivers installed.
Then install RivaTuner to bump the base fan speed up to 35-40%
IMHO The factory ATI fan speeds are a deliberate attept to cook cards to reduce longevity and increase profit.
I doubt that was the intent (although it might be the result). I suspect it was an over-reaction to the complaints about "vacuum cleaner" noise levels from the 2900 series cards, which was probably an over-reaction to complaints about overheating VRMs on reference design 1950 series cards.

If we're lucky, ATI will realise that folks want the ability to decide for themselves how load will affect fanspeed and incorporate that feature into a future driver release (obviously with the factory default max/min temps locked in to prevent folks from trying to set their ranges too low for safe reference design operation).
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  #123 (permalink)  
Old May 11, 2008, 02:35 AM
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I'm still waiting on that aftermarket cooling test.
Are there any 2 heatsinks that fit on the card?
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  #124 (permalink)  
Old May 18, 2008, 01:10 PM
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Quote:
Originally Posted by sswilson View Post
If we're lucky, ATI will realise that folks want the ability to decide for themselves how load will affect fanspeed and incorporate that feature into a future driver release (obviously with the factory default max/min temps locked in to prevent folks from trying to set their ranges too low for safe reference design operation).
I picked up the ASUS version and it comes with a handy little program called smart doctor which gives you alot of control over the fan speeds at specific temperatures. http://www.asus.com/999/html/share/2/icon/11/index.htm
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  #125 (permalink)  
Old June 6, 2008, 05:37 PM
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Has anyone tried 2 of these cards in crossfireX?? I've heard that only 1 core from each is working. If thats the case then its better to get two 3870's because its basically the same thing but the DDR4
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  #126 (permalink)  
Old June 6, 2008, 06:00 PM
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You heard wrong. It does seem that only three gpu's are working, given performance.

For example, with QX9650 @ 3.0ghz, 1 card, I get a bit over 16k.

Add the second, I get about 1000 points more.

But, with QX9650 @ 4.0ghz, I get 20k with one card, and 23,5k with 2 cards. Clearly there is something funky going on here...

Anyhow, with all that said, unless you have a 30-inch monitor, one card is fine for most games @ 1920x1200 with no AA, except Crysis. but that's the game...
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  #127 (permalink)  
Old June 7, 2008, 07:11 AM
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I had a similar experience myself, actually. At the time, I was wondering whether or not the drivers were demanding an unusual amount of CPU processing to function, or something weird like that. But CPU speed increases seemed to be giving me an unusually strong score improvements in 3DM06, even by that bench's standards. I didn't pursue it any further (and the card's getting RMA'd now), but it's interesting to see someone else getting similar results.
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