(07-14-2016, 02:39 PM)kamsulla Wrote: I checked my system (1cpu xeon, 2 x gtx1080),
I took the card1 x16 slot and second card is x8 slot then check the benhmark same speed ~417kh ~414kh.
I took the card1 x16 slot and second card is x16 slot then check the benhmark same speed ~417kh ~414kh.
No surprises here.
... i'm getting the same speed for WPA/WPA2 with multiple gtx 980, titan x and gtx 1080 even on a consumer i3 (!) mainboard, it's powering 5 GPUs on pcie x1 each (i can only use x1 because of pci-e risers). The figures are indeed identical for slow hashes like WPA.
But there may be a huge difference for faster hash algorithms when using dictionaries, so you also have to compare the figures for fast hash-algorithms. The reason is simple:
The faster the hash algorithm, the more passwords per second hashcat has to pump over the pci-e bus to the GPUs (for dictionary based stuff). Therefore the difference between x1 vs. x4 vs x16 will be higher, the faster the hash-algorithm is (if not enough password candidates can be calculated on gpu) - while there is less or possibly no measurable difference for slow hash algorithms.