Sudden Bump in the Hash Rate

[paulkoan]

So you were probably all wondering what the sudden bump in the hash rate was all about?  Well, that was me, retiring an nVidia 570 for an AMD 7950.  

Yeah, I know.  A full .5Gh/s

Well, ok, it made me smile anyway.

I have been trying out various minors with this.  I have the 2.7SDK and 12.8 drivers installed, and for some reason, phoenix 2.0 won't enable BFI_INT - unsupported.  I am guessing the latest phoenix isn't compatible with the 2.7SDK?  Without it, phoenix performs worse than poclbm or cgminer - at least with my setup.

Is there a "best" miner I should be using?   I am getting 475Mh/s with cgminer.

Thanks...

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[DonShrents]

I am getting 475Mh/s with cgminer.

On which card and under what settings and environment ?

~DonShrents

[paulkoan]

On which card and under what settings and environment ?

~DonShrents

I guess I was trying to understand what the "best" miner was, and from there I would tweak settings.  The board is a Gigabyte HD7950 3GB, standard board (ie not the OC board), but it does oc a bit before getting flakey - I haven't tweaked it too much, I am running for a while to get a baseline.  So currently it is 950Mhz / 1285Mhz.

With cgminer, I haven't changed anything, I am guessing it is running dynamic aggression.  This is under Windows 7 64bit, but I spend an equal amount of time in linux, but not with this card yet.  My nvidia board under linux and rpcminer seemed to run about 30% better than with cgminer under Windows, so it will be interesting to see how this card goes.

[poohbah]

I get about 560MH from this:

7950 @ 1075mhz with 1.012v per afterburner under Win7 (memory at 625mhz with 1.5v)
cgminer 2.7.5
Core temps run 76C-73C
VRMs run 75C-80C (hottest)
I can overclock it much higher, but this is a very good noise/temp solution for my card. It's also very stable.

"kernel" : "diablo",
"intensity" : "9",
"gpu-powertune" : "20",
"gpu-threads" : "2",
"worksize" : "256",

Hope that helps

Oh, yay, post #5.

[paulkoan]

Yeah it does help, thanks. 

Have you figured out a way to see that it actually does pick up the diablo kernel?