Post
Topic
Board Mining (Altcoins)
Re: undervolting 7970 XFX with VBE7 & ATIWinFlash
by
drakoin
on 07/01/2014, 03:23:59 UTC
I forgot to say i use the switch g 2 also.
Yes, I also do that. Gives a lot more than -g 1

Sometimes some card start at 1/2 expected khash....in that case i have to reboot (maybe voltage...)..
Or Watt.

How big is your PSU, perhaps it's not delivering enough amperes to the card, and the card notices?


Are you trying with multiple card or just one?
Always optimizing only one card because otherwise I don't know where a crash came from.

Anyway these  are my settings :
"intensity" : "13,13,13",
"vectors" : "1,1,1",
"worksize" : "256,256,256",
"kernel" : "scrypt,scrypt,scrypt",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "8192,8192,8192",
"shaders" : "2048,2048,2048",
"gpu-engine" : "925-925,925-925,925-925",
"gpu-fan" : "51-51,61-61,51-51",
"gpu-memclock" : "990,990,990",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "0,0,0",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "95,95,95",
"temp-overheat" : "85,85,85",
"temp-target" : "75,75,75",
"api-listen" : true,
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "1",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "1",
"scrypt" : true,
"temp-hysteresis" : "3",
"worktime" : true,
"shares" : "0",
"kernel-path" : "/usr/local/bin",
"api-allow" : "192.168.1.11"

Thanks!

Looks very similar to mine.

I don't know about these two:

"lookup-gap" : "2,2,2",
"gpu-dyninterval" : "7",


{quoting got a bit messed up so I switch to email style for now:}

> > > I would point out that 6 month ago i could not get these value.

> > THAT is really interesting - and perhaps an explanation?
> > Perhaps you have "trained" your cards into high performance?

> I have just changed drivers, and flashed an undervolted bios
> cause 7970 on linux was locked....I flashed also 280x for then
> discover that cgminer can change 280x voltage (also on linux).

ah, nice to know.
What did you use to edit the r9-280x bios?  Also VBE7 ?

> > At which (approximate) settings have you had them running
> > in those 6 months, before you reinstalled and readjusted?
> > And which power consumption and temperature?

> Well I restart mining on november.. (during summer was killing me) .
> but i remember i had to use higher memory setting for the same result....
> Mem to about 1350

Alright, so very different from now.

> > > Recently I reinstall the rig with new drivers and cgminer 3.7.2.

> > Which catalyst drivers?
> Driver ati 13.12 and 13.10 .....
> I'm using ubuntu
> but it works also on windows ( i use it just for flash bios)

> I builded cgminer my self with AMD-APP-SDK-v2.9-lnx64.tgz ,
could that also be a reason for the good performance?

> but also the pre-build one could work. [/font]


> > Let's save half of the electricity of the worldwide GPU grid!

Let's get back to this now.  Have a look below.  Thanks a lot for the inspiration!