Low Mega Hashes With 7950

[e4canadian]

I have a 7950 running at 800 mhz, it typically mines at 400 mh/s. This is much lower than the 550 mh/s stated on the mining hardware wiki page. I'm using the bitminter mining client. Does anyone have an idea why its mining so much slower, or is this a typical speed for my card.?

[MrAnderson90]

I managed 460 on a gigabyte OC one, so i guess it's okay? you could try to use another driver (Older/beta)

[Florimer]

What card model do you use?

[e4canadian]

What card model do you use?

I have an xfx 7950 DD

[Linuxury]

I have and 7970 and i get arround 630-660 mhash/s

 

add this on the "Extra flags:" and see if it helps "-v -w 256"

[e4canadian]

I have and 7970 and i get arround 630-660 mhash/s

 

add this on the "Extra flags:" and see if it helps "-v -w 256"

What software are you using to mine? Do you know where I am supposed to go in the bit minter client to add that?

[Sklomp]

Well that's very low. I use cgminer for litecoins, but that's just adding --scrypt in front of it. I will get my numbers for you so you can get around 630ish

 

My .bat file in the cgminer folder:

 

cgminer.exe -o poolurl:port -u workername -p workerpassword -I 20 --shaders 1792 -w 256 --lookup-gap 2 -g 1 --thread-concurrency 21712 --gpu-engine 1050 --gpu-memclock 1600

 

As you see I'm overclocking the memory over the max setting in afterburner, but it mines 24/7 stable @68C with fans on auto (3000 currently) I am using a Sapphire 7950 3GB with Boost

 

I first got an error, but I fixed it with this command in cmd:

 

setx GPU_MAX_ALLOC_PERCENT 100

[Linuxury]

What software are you using to mine? Do you know where I am supposed to go in the bit minter client to add that?

I use GuiMiner