I would like to know if when running multi PGU's in SLI what is best
if a mobo has 3 pci E slots and thetop slot is 16x , midle is 16x and bottom is 4x then if i have 2 cards then would they have to run on the top and midle slots (both 16x slots) to run better?
also if these cards were very close next to each other with a single cntre fan would the top card draw the heat up from the bottom card making it over heat.
or should i use a GPU card that has a single fan set at the end of the cards.
if i used top slot 16x and bottom slot 4x would that be good?
some sli set ups have 4 cards or 3 cards and these all seem close together with very little room...... are these generaly cards that have fans set at the end of the card or do they have them in the midle?
the two cards i would like to use are listed in the title
More about :gainward gtx 460 glh sli whats besst sli set
You can, surprisingly, use any lane x16, x8, or even x4 and you will not see a performance decrease:
"The results are actually a bit shocking to us to be honest. We weren’t so surprised that in the previous evaluation x8/x8 did not cause any differences at 2560x1600 but did at 5760x1200. However, we thought certainly at x4/x4 PCIe 2.0 mode there would be some kind of a bottleneck at 2560x1600, but the results have proven otherwise. Even with all the data that GTX 480 SLI is pushing across the PCIe bus, x4/x4 is NOT a bottleneck in a single display setup at 2560x1600 with AA enabled. The only game to show us any difference was AvP, but it did not affect the gameplay experience. Therefore, if you are on an aging PCIe 1.X system at x8/x8 mode (equivalent to PCIe 2.0 x4/x4) on a single display fear not, you are not holding back the performance of GTX 480 SLI or we guess with any CrossFireX or SLI configuration." http://www.hardocp.com/article/2010/08/25/gtx_480_sli_p...