Bitcoin Forum

this card:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202030

Is getting just the worst hashrates.I've tried the guiminer defaults, a bunch of stuff from https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison#wiki-ATI_AMD_GPUs

And a couple things I found on reddit, like http://www.reddit.com/r/litecoin/comments/1cbg51/my_7950s_are_at_800k_somehowprt_scr/

And I am just getting dick for speeds. the ones on reddit almost work: At least, on give-me-ltc it reported 650+ spike for a while, but my computer slogged to literally unusable, to the point where guiminer froze and I couldn't move the mouse enough to stop the goddamn miner.

Can someone post settings they are using with this exact card to get into the 600s?

I've got 6 of those cards doing 650. You need to bump intensity or try -g 2.

-g 2 at any intensity makes my system .1fps and drops my speed to 2-14khs. between 2khs. and 14khs. I have no idea why this card hates me so much.

If you get Mhs, then you are not mining litecoin  ::)

I have the same cards. bought it for 299 cad. look through my post history to get what you need. I used reaper, cgminer and guiminer scrypt. on we mine ltc .com or anywhere, I can comfortably now do 575 per card.

Sorry, it was a mistype. I'm using guiminer-scrypt, and i'm not quite that stupid.

I've updated my bios to the newest revision, and thanks to some of offbyone's settings, getting better hashrates, closer to 500 at unusable mouse party.

I honestly think 560 as my afk setting is about the best I'm going to do, though. Not sure how people are nailing 700+ but my temps spike up to 90 pretty fast even at the suggested settings. I'll post/update more but again, anyone else with the same card has settings or suggestions, please fire away.

(especially if you have a "I get 500kh/s and can still use that display to game" magical setting.... )

My understanding is that you aren't going to be mining a scrypt-based coin at a decent rate AND have a useable system.  If anything you've read disagrees with this, then please reference it for me. 

550 kh/s is what I would the target hash rate for a stock GPU. 

... or you got those FPGA that were rumored to be coming to work  ;).

I've had nothing but grief tryin' to get guiminer-* to pump hashes. Scrypt, BTC, whatever. Doesn't matter. 60% hash rate.

CGMiner is great, Ufasoft's coin-miner is great, reaper is great. Reaper can actually outperform most of them but crashes more often. YMMV.

I have 3 of these cards and I get about 1400kh/s total using reaper. I could be getting more, but if I push my intensity higher than 15 I overheat. Once I get risers I will push them to their limit. Use reaper and try messing with your gpu thread concurrency. Mine is at 20480 i-15, I believe and I get a pretty decent hashrate

Are you setting powertune to +20? That's needed to turn "off" the power saving feature that will drop your clock speed now and then.

I'm not sure about previous versions of Asus GPU tweak, but the current beta version has ability to draw a manual fan curve which you can use to aggressively lower the temperature. With the case open, these cards run at about 76 C doing 575 kHs.

I don't consider gaming while mining. The ATI driver will crash if I even attempt to do that. 

I have the same reference card, secret is to go into MSI Afterburner and set power limit to +20, with that I now get 650 kH/s off each 7950 I have! :D and more stable too!

I don't mean gaming on that monitor, I mean keeping my mouse stable and usable, so I can came on a display plugged into another graphics card, or my APU gfx.

Lots of tips, and yes +20% power is set. I've got a few things that are getting me 600khs, but the problem is, it's HOT. I'm looking for good settings that aren't going to melt the thing. I've found that a lower TC is generally pretty helpful, and usually gets me a similar or better hashrate over huge ones in the 24k range, mostly 8192.

I used to swear by GUIMiner

Then I tried to mine an altcurrency ... and everything went to hell.

Started using CGMiner via GUIMiner at the time. Been using it since.

While this isnt the same chipset, it is the same manufacture and brander on my 5750. These are the settings i use for LTC


Granted I'm only getting about 60-80Khash/sec I'm not expecting much.

I get about 160MHash when mining BTC with similiar settings :)

Also I'm using Catalyst 13.1 - Had to screw around with OpenCL/APP SDK a bit to get .. ANY performance at all.

I can mine for days on end leaving PC unattended and my GPU will only be 73C when I finally get back to it :P

I did discover something. Pointer trails does NOT agree with mining. it puts a heavy tax on the GPU while mining, and I have no idea why. Disabling that helped a lot, but the myriad of settings I've tried have continually fucked up, even running the fan at 75%, it was only stable for about 2 hours and it crashed. Higher than 75, and the fan is too loud to sleep in another room.


EDIT:

Can anyone confirm this videocard is voltage locked? I can't seem to get voltage settings with MSI afterburner to apply, it always reports stock which is.... high. 12.5ish. If I could undervolt this bitch, I'd be set for loooower temps!

I have 10 of these cards on risers with a fan blowing on them and at I=20 etc.. I am at 71c and 640 hash each.

If you need settings and specifics pm me and I'll see what I can do to help ya, maybe do a remote teamviewer so I can make sure nothing else is messing up your system.

if you know what you're using/how you're changing voltage, I should be set: are you able to undervolt these cards at all?

1.1v 1100core 1575 mem

--intensity 20 --shaders 1792 --worksize 256 -v 1 --gpu-threads 1 --thread-concurrency 24000

Oh, and make sure you do +20% power in overclocking software and also do:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

Get it to work better?

I FINALLY got it all sorted out.

My previously posted settings are still getting me the best hashrates out of anything I've found. if I drop the TC to 8192 and intensity to 16, the machine stays 100% usable at 550/khs for gaming on alternate monitors. Amaaaaaaazing. So amazing. I also work from this rig 10 hours a day, 4 days a week, so usable/gaming is important to me.

For those googling for this shit though, here are all my myriad of trial and error bullshits:

FIRST AND FOREMOST. Pointer trails ruins everything. TURN OFF POINTER TRAILS. everyone should turn off pointer trails. I love them for the visibility of the mouse, but looks like I'm fucked for that with mining.

FINALLY, this card ISNT voltage locked. it just REALLY likes to control itself, and once you enable in MSI afterburner FORCE CONSTANT VOLTAGE, you will be able to reasonably control your voltage, while it may still spike a little, I'm now keeping my temps WELL under 90 with a setting of 1050mv.
My gpu clock is 1104 and my memclock is 1575.

My two CG miner starty bits pulled from GUI's console is:

Usable: (530ish khs)
 cgminer.exe --scrypt -u username -p password -o stratum+tcp://stratum.us.give-me-ltc.com:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 16 -g 1 -l 1 -T --shaders 1792 -g 1 --thread-concurrency 8192

Overnight: (630khs)
cgminer.exe --scrypt -u username -p password -o stratum+tcp://stratum.us.give-me-ltc.com:3333 --gpu-platform 0 -d 0 -w 256 -v 1 -I 19 -g 1 -l 1 -T --shaders 1792 -g 1 --thread-concurrency 16384


with these settings, I'm finally stable at or under 86 degrees with autofan. It's awesome.

Thanks to everyone in the thread for the help, too! A whole lot of it was me being kind of a tool. Fucking pointer trails. You have no idea how hard I fucking screeched when I turned it off and suddenly everything wasn't shitty.

One continued problem, though: My GPU spikes from 64% and 100% after it's been at max for a bit, like this:
https://i.imgur.com/0snOD70.png

Any ideas on making that stop? I tried GPU max alloc command, and guiminer just doesn't like that.

Easy-peasy 520 KH with very cool temps:

925 Core
1250 Mem
Undervolt to 0.962

I-19

Gets me said hashrate, and between 60-68C stable, and very low power draw (about 175w per card).

Would this make it run hotter?

Also, my GPU also bounces around from 100% to 64%, didn't seem to effect my hashrate at all though

Minimize the monitoring program, IE GPU-z or afterburner and it will stop. Mine does the same thing when I have the intensity set to 13.

I'm fairly sure running these commands will fix the 64, 100 gpu deal:


setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

It was the power limit % fucking thing. I discovered later, if my GPU drivers restart, MSI afterburner doesn't reapply my settings, so it loads them wrong. it loads the correct core/mem clock, but it doesn't load the voltage or power limit settings. When I manually take them down or up a tick, apply, and bring them back to normal, they are applied again and work. It's less of a problem now that i'm finally stable, as long as I don't accidentally open a video or game or something hard on the renderer on one of the GPU mining displays.


I'm finally stable at 1.1mhs between my 7870 and my 7950. Now it's time to order another 7950.

I have two of these cards 100532-4L - they look nice on the outside but aren't the best for mining. It doesn't matter what settings, you get no more than 550kH/s and similar WU. The 100532-2L cards are great - you can push them at 650 KH/s with no problem. I would be OK if these gave 600 KH/s, but... no go.

I even tried your settings above, I got the same hash rate for both -530 kH/s

I currently have many, many 4L's and every single one is above 600.  I've gotten a few to 700 with almost no problems.  It's all about the computer and cgminer.

ol

610 kh/s and computer completely responsive, and two full HD monitors @ 1080p enabled

https://forum.litecoin.net/index.php/topic,2960.msg19621.html#msg19621

What does the computer have to do with it? I've tried every setting I could possibly find on the net and then some - nothing. Certainly nowhere close to 700. The fastest hash I have seen is 650. If you have some settings then let this guy know so we can give them a try.

I say computer because you need enough memory, cooling, etc..

Second is the overclock.  Straight out of the box you should be getting 550 with no overclock on I=19.  If not something's up with your computer.