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who will win "SLI" or "Dual GFX"

L

lsman

Diamond Member
As you know nVidia nForce4 SLI will run at x8 and x8 when using two PCI-e display card, VIA K890Pro 's Dual GFX will run a x16 and x4.

which is a better solution? VIA seems to have better brandwidth, but will the x4 be a bottleneck?
 
the nf4 is better, but we are talking an extremely small difference. my logic behind this is that agp 4 to agp 8x is a veryyyyy small difference, so clearly, 16x will be overkill. 8 and 8 is more than enough bleh
 
Any link to the VIA implementation? In any case, unless you run out of memory, external bandwidth probably isn't gonna be too much of an issue.
 
VIA has been making quality stuffz for a while. You can trust their entry will be solid.

NVIDIA is new, but the Nforce2 had to be the best selling consumer MB in history.


It all comes down to reviews, reviews, reviews IMHO.
 
some ppl seem to think than 1x agp is the same as 1x pcie. its not. a 4x pcie has the bandwith of 8x agp. a 16x pcie is comparable to a theoretical 32x agp.
 
Originally posted by: Goi
Any link to the VIA implementation? In any case, unless you run out of memory, external bandwidth probably isn't gonna be too much of an issue.
Click to expand...

one that i google
link
 
Originally posted by: Thermalrock
some ppl seem to think than 1x agp is the same as 1x pcie. its not. a 4x pcie has the bandwith of 8x agp. a 16x pcie is comparable to a theoretical 32x agp.
Click to expand...



Uh, I believe each lane of PCIE has 256MB of bandwidth, meaning 1x AGP, 4x AGP, and 8x AGP are equal to 1x, 4x, and 8x PCIE respectively.


EDIT: I am correct. See here:

http://www.lsilogic.com/techno...xpress_technology.html

However, the difference between PCIE and AGP is that with PCIE, a lane can run 250MB in EACH DIRECTION at the same time, so you could be moving 500MB of data per lane, if half was coming in and half was going out.

So, I guess we are both correct. PCIE has more bandwidth than AGP, but only in different directions. As far as getting texture data to the graphics card, PCIE and AGP are effectively the same bandwidth.
 
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