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Conroe board - Page 7

post #61 of 103
Yeah, there is no graphics card coming close to the x8 bandwidth. As I said, in SLI mode, even a x4 bandwidth only results in a 10% loss or so.

The OCZ is good also, (I have the FSP Epsilon, which is identical), but with DX10 on the horizon, you want as much power you can (high end cards drawing like 250W a piece - double the current high-end cards)
    
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post #62 of 103
Thread Starter 
i did not know that about the newer cards, but i'm still not following what you said about the 10% loss is from 4x bandwidth cards?
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post #63 of 103
Not from the cards.

Ok, as you know PCI-E x16 has a maximum of 16 lanes, bi-directional traffic. With one card, the interface will run at x16, x16 speeds. With two cards, the most common combinations of speeds are x16, x4 (Intel 965 Express chipsets), x8, x8 (Intel 975X chipsets, some nVidia chipsets, and some ATI chipsets), and x16, x16 (high-end nVidia and ATI chipsets).

x16, x16 provides the highest bandwidth. However, modern video cards don't even use x16 bandwidth right now, not even close! Even x8 is already a stretch. As I said, running Crossfire or SLI in a motherboard that runs x16, x4, results in only about a 10% loss in speed. In x8, x8 the loss is even less. A benchmark I found, concludes that with SLI-ed 7800GTX's, there is no noticable difference between x16, x16 and x8, x8. (I think they ran latter tests with high AA, AF, and then there is some difference). With Crossfired X1900s there is a difference, but that might well be caused by the better quality of the ATI xPress 3200 chipset as compared with the older ATI chipset (which had some issues...)

Yes, x16, x16 might give you a performance boost. A lot? Not at this moment. Maybe, just maybe, a card will show up that truly needs all this bandwidth, but I don't think it will be too soon.

Having that all said, my motherboard is just a stopgap until the DFI RD600 motherboard comes out. I do not like the SLI motherboards that are currently on the market for the Core 2 Duo. At this moment, nor SLI nor Crossfire has matured for the Core 2 Duo platform, and my advise is to wait.
    
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post #64 of 103
Thread Starter 
how does this work chozart? http://www.newegg.com/Product/Produc...82E16813121016 the options with the pcie slot? and its the same 975X chipset and the same southbridge as the asus p5w dh deluxe.
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post #65 of 103
Intel brand motherboards generally don't overclock well, if at all..

You have to search really hard to find a member who has one

Asus P5W DH Deluxe over the Intel any day.
    
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post #66 of 103
Thread Starter 
how does the 3 pcie slots work?
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post #67 of 103
The third slot generally runs at a lower speed, and there are no real functions for it yet. The thought behind it is that PhysX cards will be x16 PCI in the future.
    
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post #68 of 103
Thread Starter 
oh ok thanks. my new and improved but ever changing build list is this
asus d5w dh deluxe
ocz 700w psu
conroe 6600
corsair xms2 pc2 6400
i'm starting to think this is almost finalized and just order it
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post #69 of 103
    
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post #70 of 103
Thread Starter 
its either the computer or this monster http://www.vadercabinets.com/sitebui...ctures/blk.jpg i got to get a better job so i can get both
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