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Is 16x 4x on this board a bad idea?
Jul 12, 2010, 12:11 AM
from a few charts I've seen only a 5% drop in the 5000 series using a 16x 4x,, i'm using this board and 2 4870's
i was not planning on crossfiring but i got the extra card for free and my power supply can take the load.. so what should i do?
Jul 13, 2010
Jul 12, 2010, 12:24 AM
Well if you've got the card do some benchmarks of your own and see if it is worth it for you. If it doesn't seem worth it you can always put it on ebay or get a board with a x8 slot.
Jul 12, 2010, 12:27 AM
thats a great idea! what % increase in score would be a good range?
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Jul 12, 2010, 12:34 AM
Well, the performance increase from a single HD4870 to an HD4870x2 tends to be somewhere in the 70-80% area on average.
Jul 12, 2010, 12:41 AM
Let us know how it goes. It be interested to see how much a PCIE 2.0 x4 slot limits an HD4870.
Jul 12, 2010, 3:01 AM
i did the benchmark test Heaven
here is my score for 1 card
on crossfire i got
heaven's settings i used the default
seems like a 95% boost, not bad
Jul 12, 2010, 3:03 AM
rest of my system... win 7 64bit
4 gigs ram
amd 955 at 4.0ghz
again the 2cards are 4870's
Jul 12, 2010, 3:25 AM
I'd try it in a real game or two. Perhaps something with a built in benchmark like Crysis, Far Cry 2, GTA4, Just Cause 2, ect.
Jul 13, 2010, 1:58 AM
okay just did the just cause 2 benchmark on 1920x1080 on max settings
1 card time 128seconds, 20.43 fps
2 cards time 121seconds 48.08 fps
Jul 13, 2010, 1:58 AM
just hoping this info will help someone out
Jul 13, 2010, 4:21 AM
That's some impressive scaling. I guess the x4 slot isn't all that bad on PCIE 2.0 boards.
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