Ltc Mining with 7850 AMD HIS HD 7850 DVI/HDMI/GDDR5 1024MB

[wesjuhnl]

As title says,

Does anyone has exp with mining ltc with a 7850 AMD HIS HD 7850 DVI/HDMI/GDDR5 1024MB.

I would like to know what khash they produce.

[Slix313]

From the research I've done it depends on the clock of the card, but @ 900Mhz itll get ~350kh/s

[dig_btc]

my his 7850 rate too low: 270K at core 1100 , mem 1200,sdk 13.4, win7 32,app 2.7 with cgminer 3.0

  --shaders 1024 --intensity 12  --thread-concurrency 5120 --worksize 256 --lookup-gap 2   -g 1 --gpu-engine 1100 --gpu-memclock 1200 --temp-target 75 --temp-cutoff 85 --auto-fan --auto-gpu

when -I > 12 ,  many HW error.


why so low rate?

[barwizi]

i run a small farm based on 7850s, in cgminer don't specify the shader, or thread concurrency, just put two threads, then 1080 gpu engine and memory 1400. try and let me know the results. in fact here's my current .conf its been running almost a week no crash or shutdown required.

Code:

"intensity" : "12",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "2",
"thread-concurrency" : "0",
"shaders" : "0",
"auto-fan" : true,
"gpu-engine" : "300-1080",
"gpu-fan" : "0-100,0-100",
"gpu-memclock" : "1445",
"gpu-memdiff" : "0",
"gpu-powertune" : "0",
"gpu-vddc" : "0.000",
"temp-overheat" : "90",
"temp-target" : "70",
"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",
"shares" : "0",
"kernel-path" : "/usr/local/bin"

i get 380 ~ 400 kh