Re: [ANN] cudaMiner - a new litecoin mining application [Windows/Linux]
The bandwidth will also vary depending on the number of installed card.
My motherboard (Z77 G45), will allow one card to run at 16x bandwidth (pcie 3)
but 2 cards will run at 8x bandwidth
3 cards (using the pci-e 2.0) will make the first cards run at 8x bandwidth and the two other at 4x
My motherboard (Z77 G45), will allow one card to run at 16x bandwidth (pcie 3)
but 2 cards will run at 8x bandwidth
3 cards (using the pci-e 2.0) will make the first cards run at 8x bandwidth and the two other at 4x
What tool do you use to confirm this slow down?
I got this one my MB manual
However, hwinfo64 show the actual bandwidth used by the card (gpu-z also I think)
I'm now using two 750 TI's on a motherboard with PCIe 1.0, one is sitting on a x16 slot, the other one on a x4 slot (IIRC, the equivalent of a PCIe 3.0 x1 slot), I have no bottleneck if I run all my mining with '-H 2'. I'm reaching the same speeds as everyone else here, roughly 310 to 320 kh/s scrypt or 160 mh/s kekkak with moderate overclocking. Without the '-H 2', I go straight to 250 kh/s or so in scrypt.
(hash rates quoted are for a single card, and both reach the same figures with -H 2)
Cheers,
Myagui
Edit: Will check & report on my bus usage tonight.