I have at last got 8 x 280's mining Monero. I am getting about 450h/s out of them. Is this about right or should I be able to squeeze a little more out of them?
Also I have been mining on supportxmr for over 5 hours now and still showing nil balance on total due... is this correct? does anyone know how often this updates?
thanks
I got a bunch of these also. And depending on the memory type, your core engine clock and memory clock, you should get close to 600h/s.
With a Hynix R9 280X ASUS 3GB, I get 600H/s.
Basically undervolt to 0.950V, set core to 1000 and memory to 1500 and you should get like 597H/s or so. Uses like 130 Watts or so.
Not worth overclocking because the speed isn't beneficaial.
This is pretty much the only algo worth mining with these old old GPUs.
You had any issue with undervolting? I'm mining Cryptonight with R9 280x but never tried to undervolt