Quote from: Takashi267 on March 02, 2014, 08:43:44 PM

Quote from: AliMan on March 02, 2014, 08:24:11 PM

Quote from: Takashi267 on March 02, 2014, 03:45:24 PM

Quote from: cvax on March 01, 2014, 11:52:35 PM

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Quote from: cvax on March 01, 2014, 07:24:30 PM

Quote from: bigjme on March 01, 2014, 06:50:41 PM

I can check my 780 on pci 3 x16 if you guys want those results

That would help tremendously. What kind of risers do you have? Can you try a 16x to 16x riser or even a 1x to 16x in that PCI-E 3.0 versus the card being put into the slot directly? Thanks.

I missed the riser part sorry. Would test it but it means ripping my water cooler apart :-(

Ah, no worries. Would still be curious if 3.0 slots yield any benefit versus 2.0 slots for cudaminer if there was any way you had a means of doing that without messing up the water cooling.

While I dont have any risers laying around my motherboard has PCI-E 2.0 x16 slot running at x2 and a heavily overclocked GTX 780.
Here is my config for my GTX 780: cudaminer.exe -q -i 0 -m 0 -H 2 -l T12x24
PCI-E 3.0 x16: ~715Khash/s with a bus usage of ~13%
PCI-E 2.0 x16(x2): ~685Khash/s with a bus usage of ~40-50% (I forgot the exact number)

If you have any more questions feel free to ask.

I tried your launch config on my 780's, but I'm only getting 40Kh/s on scrypt.

That's odd, even a stock GTX 780 should get ~600Kh/s. Im sure everyone here would agree that -q -i 0 -m 0 -H 2 -l T12x24 is the most optimal scrypt launch config for a GTX 780. Make sure you have SLI disabled when your mining. The last time I checked, sometime around December, cudaminer doesnt work when SLI is enabled.

I get around 500Kh/s when I use the older Cudaminer that was released on the 18th of December,2013, but that doesn't do multiple GPU's in a single program as it crashes.

SLi can't be enabled as I'm using five of these, and my output is through the iGPU.