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Topic: 7950 BTC vs. LTC hashrate - page 2. (Read 1644 times)

newbie
Activity: 14
Merit: 0
June 16, 2013, 11:37:37 AM
#17
Ok, managed to fix it with a couple of tweaks:

--shaders 1792 --intensity 16 --worksize 256 -g 1 --thread-concurrency 21712  --lookup-gap 2 --gpu-engine 1000 --gpu-memclock 1400

lowered the gpu engine and meclock, and upped int by 1. Going fine so far. I'll let it run for a while longer, see if anything comes up.

On a side note: the GPU seems to be running a bit hotter, might drop Int back down to prevent it.


EDIT: I rummaged through some of the CGminer options, and it lists my current gpu engine at 810 rather than the 1000 my batch file asks for. Any suggestions?
legendary
Activity: 1988
Merit: 1007
June 16, 2013, 11:25:45 AM
#16
Thanks, I'm working on that now ^^

BTW, is my memory clock setting ok? It's pretty much maxed out.

I don't think that should be a problem. The only issues I've run into so far were due to core speed.
newbie
Activity: 14
Merit: 0
June 16, 2013, 11:18:15 AM
#15
Thanks, I'm working on that now ^^

BTW, is my memory clock setting ok? It's pretty much maxed out.
legendary
Activity: 1988
Merit: 1007
June 16, 2013, 11:11:13 AM
#14
Well this is fun, seems like Trixx decided to kick my GPU in the sack...I can't mine without my driver crashing. Current .bat:

cgminer --scrypt -o URL -u user -p pass --shaders 1792 --intensity 15 --worksize 256 -g 1 --thread-concurrency 21712 --lookup-gap 2 --gpu-engine 1100 --gpu-memclock 1550

Intensity at 15 because it'll cry about invalid nonces every line.

If your drivers are crashing try lowering the GPU-Engine by a little. Try 1050, 1000, and then slower decrements (like 990, 980). I found that mine works at 980 but crashes with anything higher.
newbie
Activity: 14
Merit: 0
June 16, 2013, 11:02:00 AM
#13
Well this is fun, seems like Trixx decided to kick my GPU in the sack...I can't mine without my driver crashing. Current .bat:

cgminer --scrypt -o URL -u user -p pass --shaders 1792 --intensity 15 --worksize 256 -g 1 --thread-concurrency 21712 --lookup-gap 2 --gpu-engine 1100 --gpu-memclock 1550

Intensity at 15 because it'll cry about invalid nonces every line.
legendary
Activity: 1988
Merit: 1007
June 16, 2013, 10:35:10 AM
#12
firs of all set those things
comand prompt with administrator privilege
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT=100

now for getting 600KH with cgminer and 1100 core and a 7950 on cgminer shortcut
--scrypt --thread-concurrency 24000 --lookup-gap 2 -w 256 -I 20 -g 1

this if you want to use your pc and mining at the same time, but only 525KH
--scrypt --gpu-threads 2 --worksize 256 --thread-concurrency 8192 -I 13

Thanks for the info! this allowed me to increase my hashrate to what it should be.

Awesome information! What voltage is your card set at when doing this?

Atm, it seems to be 1093, according to Trixx.

Hmm... what's odd is I had an issue when I ran my video card stock. I would get low hash rates with SHA-256, and if I enabled the max alloc percent variable as 100, it would give a lot of artifacts and shut down the PC after a few seconds.

I also can't seem to get my core up above around 980 without the same thing happening when on Scrypt.
newbie
Activity: 14
Merit: 0
June 16, 2013, 10:32:46 AM
#11
firs of all set those things
comand prompt with administrator privilege
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT=100

now for getting 600KH with cgminer and 1100 core and a 7950 on cgminer shortcut
--scrypt --thread-concurrency 24000 --lookup-gap 2 -w 256 -I 20 -g 1

this if you want to use your pc and mining at the same time, but only 525KH
--scrypt --gpu-threads 2 --worksize 256 --thread-concurrency 8192 -I 13

Thanks for the info! this allowed me to increase my hashrate to what it should be.

Awesome information! What voltage is your card set at when doing this?

Atm, it seems to be 1093, according to Trixx.
legendary
Activity: 1988
Merit: 1007
June 16, 2013, 08:14:53 AM
#10
firs of all set those things
comand prompt with administrator privilege
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT=100

now for getting 600KH with cgminer and 1100 core and a 7950 on cgminer shortcut
--scrypt --thread-concurrency 24000 --lookup-gap 2 -w 256 -I 20 -g 1

this if you want to use your pc and mining at the same time, but only 525KH
--scrypt --gpu-threads 2 --worksize 256 --thread-concurrency 8192 -I 13

Thanks for the info! this allowed me to increase my hashrate to what it should be.

Awesome information! What voltage is your card set at when doing this?
newbie
Activity: 14
Merit: 0
June 16, 2013, 07:10:15 AM
#9
firs of all set those things
comand prompt with administrator privilege
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT=100

now for getting 600KH with cgminer and 1100 core and a 7950 on cgminer shortcut
--scrypt --thread-concurrency 24000 --lookup-gap 2 -w 256 -I 20 -g 1

this if you want to use your pc and mining at the same time, but only 525KH
--scrypt --gpu-threads 2 --worksize 256 --thread-concurrency 8192 -I 13

Thanks for the info! this allowed me to increase my hashrate to what it should be.
full member
Activity: 322
Merit: 113
Sinbad Mixer: Mix Your BTC Quickly
June 16, 2013, 06:01:21 AM
#8
Intensity setting will be different between BTC and LTC mining. Standard BTC is usually something like 6 whereas LTC can be anywhere from 12 at desktop usage to 20 for dedicated mining.
legendary
Activity: 3248
Merit: 1070
June 16, 2013, 05:27:33 AM
#7
firs of all set those things
comand prompt with administrator privilege
setx GPU_USE_SYNC_OBJECTS 1
setx GPU_MAX_ALLOC_PERCENT=100

now for getting 600KH with cgminer and 1100 core and a 7950 on cgminer shortcut
--scrypt --thread-concurrency 24000 --lookup-gap 2 -w 256 -I 20 -g 1

this if you want to use your pc and mining at the same time, but only 525KH
--scrypt --gpu-threads 2 --worksize 256 --thread-concurrency 8192 -I 13
newbie
Activity: 14
Merit: 0
June 16, 2013, 04:55:30 AM
#6
Just check this tutorial: bitcointalk.org/index.php?topic=117221.0
It's important to add proper values of intenisty, work and thread concurrency.
newbie
Activity: 57
Merit: 0
June 16, 2013, 02:26:24 AM
#5
750 mh/s on 7970
newbie
Activity: 8
Merit: 0
June 16, 2013, 02:04:07 AM
#4
Are you sure its worth the electricity? I dont think it would be.
full member
Activity: 126
Merit: 100
June 16, 2013, 01:59:13 AM
#3
You need different settings for BTC and LTC - LTC requires higher memory speeds - you should be able to get around 600-650 kh/s for LTC mining on a 7950. Search the threads or look at some sample settings from

https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison
member
Activity: 70
Merit: 10
June 15, 2013, 11:16:37 PM
#2
If you gave more details maybe I or people could help.
newbie
Activity: 14
Merit: 0
June 15, 2013, 10:38:31 PM
#1
Ok so I recently started mining, first on GUIminer, then moved to CGminer. I decided to try both BTC and LTC, just for fun. however, I noticed my hashrate for BTC was ~500Mh/s so I expected about 500kh/s in LTC, yet I only get about 150kh/s. Any Ideas on what could be causing this?

Thanks in advance.
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