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2x460 in sli, no performance increase?

tommytinkle

tommytinkle

tommytinkle

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Joined
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Hey,

We tried to get a bit of sli on the go in my friends brothers pc, but its having none of it - or so it seems.

The mainboard is a p5ne-sli, 2x 768mb gtx's. The bridge on the board was flipped over to dual graphics cards, both connected with a sli cable and sli enabled in the nvidia control panel.

Fps however, just don't increase at all. Anyone got any ideas as to why this might be?

Thanks muchly :)
 
The mobo runs at PCI-E 1.0 spec and 8x8 when SLI is enabled, there will be a drop in performance on the mobo in question, my guess is the CPU you are running is not clocked high and is probably a dual core, all things added up will result in very poor performance for SLI 460's.
 
Are you running the games in full screen? SLi only works when the game is in full screen mode and not windowed.

EDIT: What resolution are you playing on?
 
that motherboard is fail, I should know

mine randomly died and my mates has just in the last month too

not to say that SLI doesn't work on it, just that if it DIDNT, I wouldn't be all 'that' surprised:(
 
Maybe the games you have tried don't support SLi or are restricted by the 768mg VRAM more than they are by graphics power.
 
mame said:
Maybe the games you have tried don't support SLi or are restricted by the 768mg VRAM more than they are by graphics power.
Click to expand...

Hey,

The reviews of the 768meggers in sli suggest they do very well. The fps isn't changing, I can't remember exact figures but they stay the same as with a single card.

CS:S, BFBC2 and others all sit at the same fps range with one card as they do with two!
 
CS:S Will be massively CPU limited, even 3.6gig won't be enough to max it out on 1x 460 GPU - with a core 2 could probably keep going to 5gig and still see more fps out of a single 400 series GPU.

Should see big gains on BF BC2, etc. tho. Check with GPU-z that SLI is enabled and working.
 
tommytinkle said:
Hey,

The reviews of the 768meggers in sli suggest they do very well. The fps isn't changing, I can't remember exact figures but they stay the same as with a single card.

CS:S, BFBC2 and others all sit at the same fps range with one card as they do with two!
Click to expand...

I didn't pass comment on the performance of gtx 460 768mb sli. I just said maybe you have tried games that don't use sli or games that are more restricted by VRAM than power.
 
One problem with the p5n-e sli board though is that it's a poor overclocker with quads, even the higher spec 680i's were dire, i had one of those and could only get 3ghz from my q6600, same chip done 3.8ghz with relative ease in an asus p5q deluxe p45, no sli though.
 
Yup them boards were not great overclockers on Quads... but will still be better then having a dual core...


Google "ASUS P5N-E SLI 650i Thread" 1st link will be a good read for you regarding that board and overclocking it ;), there is some BIOS tricks and Pencil mods you can do to make it overclock a bit better.
 
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