Rebranded 5870 (6870) for only $130 on Newegg

[SardonicJester]

Hmmm. Damn. I'm getting only 360 after raising it to 950mhz and mem to 1200

[1715090835]

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[Littleshop]

Hmmm. Damn. I'm getting only 360 after raising it to 950mhz and mem to 1200

Are you mining bitcoin?  if so drop the memory down to 150 or 300.

[ssateneth]

Hmmm. Damn. I'm getting only 360 after raising it to 950mhz and mem to 1200

Are you mining bitcoin?  if so drop the memory down to 150 or 300.

And dont use shitty SDK. 2.5 or 2.1 (if possible). You will gain much mhash.

[ewitte]

after the diff increase and seeing it go up real quick, I'm having second thoughts if i event should build a farm. Am I the only one?

You should probably hold off for a week or so.  By then, we will have seen if the LTC price has caught up to the difficulty or not.  If it hasn't, it is only gonna get worse.

Sadly the more you hold off the more difficulty increases.  I'm going to stop at 8 cards across 3 machines. 

[ordy]

Hmmm. Damn. I'm getting only 360 after raising it to 950mhz and mem to 1200

my first test card may be a freak but it is faster scrypt hashing (cgminer) with a lower engine clock.  it likes 850 best so far.

[wrenchmonkey]

Hmmm. Damn. I'm getting only 360 after raising it to 950mhz and mem to 1200

Are you mining bitcoin?  if so drop the memory down to 150 or 300.

And dont use shitty SDK. 2.5 or 2.1 (if possible). You will gain much mhash.

Is 2.1 better than 2.5?

[SardonicJester]

Are you mining bitcoin?  if so drop the memory down to 150 or 300.

I'm mining Litecoin.

And dont use shitty SDK. 2.5 or 2.1 (if possible). You will gain much mhash.

SDK 2.8

I played around with the core and mem and the best I am getting is 360 kh/s.
Oh well, still slightly better than my old Barts 6870s plus these have warranties. So still a win in my book.

Just wish I could get the full 400 kh/s out of these cards. :/

[Singlebyte]

I am getting 420khs.  What settings you using?

[SardonicJester]

I am getting 420khs.  What settings you using?

The real question is what are your settings. 

Here is what I am using:

CGminer 3.1.0

--scrypt -u XXXXX -p XXXXXXXX -o stratum+tcp://us.wemineltc.com:80 --gpu-platform 0 -d 1 -w 256 -v 1 -I 20 -g 1 -l 1 -T  --thread-concurrency 8000

Had the thread concurrency around 6144, but I get better kh/s with 8000.

Any help would be greatly appreciated.

[Singlebyte]

Engine 900 memory 1300 thread concurrency 8192 intensity 18

The rest of your bat looks good.

Edit.. I may be able to push more out of the card but I haven't had time and wanted to run for 24hrs.

Will also try bitcoin mining in a few days to see what speeds I can get.

[endriuska]

Works like a charm for BTC mining:

[Oldie]

Works like a charm for BTC mining:

http://gyazo.com/658044c5da515fefa557a7bb1a23b5bd.png

Getting the same numbers for Bitcoin.  11.11 drivers, cards report as 5800 series.

[wrenchmonkey]

Works like a charm for BTC mining:

Getting the same numbers for Bitcoin.  11.11 drivers, cards report as 5800 series.

What SDK are you using?

[Oldie]

What SDK are you using?

If memory serves, 11.11 is the last driver that included 2.5, with 11.12 they switched to 2.6, and there were reports of lowered hash rates.  I've used 11.11 on all of the 6xxx cards that I've setup, 13.4 on 7xxx, and the custom 7790 for those.

Edit: this is on Win7-64bit.

[wrenchmonkey]

Linux was a complete fail for me. I kept getting kernel panics when booting after install of the 64bit Ubuntu 12.04, and I've had really limited time to play with it. My fuel pump went out on my car yesterday, so I spent the evening dealing with that. Anyway, I'm gonna give it a go on Windows XP (32bit), since I have an old box running that laying around here at work. I decided to bring in to work with me and play around with it while I work on other stuff.

It's got a plethora of updates to finish running before I can reboot to test it out, as it's been sitting for about a year, but I used SDK 2.5 and installed Catalyst 13.4.

Gonna try CGMiner with Litecoin. Will report back with results.

[wrenchmonkey]

Ugh, updates completed, but I can't get it to run. I'm thinking it MIGHT have something to do with not having a monitor plugged into it (forgot to bring my DVI-VGA adapter.

I'm running the following in a batch file

Code:

cgminer --scrypt -u [my username] -p [my pass] -o http://ltc.kattare.com:9332 --gpu-platform 0 -d 1 -w 256 -v 1 -I 18 -g 1 -l 1 -T  --thread-concurrency 8192

Returns error:

Code:

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\>cd "C:\Documents and Settings\student\Desktop\cgminer-3.1.1-windows"

C:\Documents and Settings\student\Desktop\cgminer-3.1.1-windows>"run cgminer.bat
"

C:\Documents and Settings\student\Desktop\cgminer-3.1.1-windows>cgminer --scrypt
 -u wrenchmonkey.2 -p 2 -o http://ltc.kattare.com:9332 --gpu-platform 1 -w 256 -
v 1 -I 18 -g 1 -l 1 -T  --thread-concurrency 8192
[2013-05-15 11:34:43] Started cgminer 3.1.1
 [2013-05-15 11:34:43] clDevicesNum returned error, no GPUs usable

 [2013-05-15 11:34:43] No devices detected!
 [2013-05-15 11:34:43] Waiting for USB hotplug devices or press q to quit

 [2013-05-15 11:34:43] Probing for an alive pool
 [2013-05-15 11:34:49] Long-polling activated for http://ltc.kattare.com:9332/LP

 [2013-05-15 11:34:49] Network diff set to 39.7M
 [2013-05-15 11:35:08] LONGPOLL from pool 0 detected new block

Does this part, "[2013-05-15 11:34:43] Started cgminer 3.1.1
 [2013-05-15 11:34:43] clDevicesNum returned error, no GPUs usable" Most likely mean that I need to use a dummy plug?

[Oldie]

Pretty sure with versions of Catalyst pre-12.6 and pre-7xxx series of cards you need a monitor plugged in, or a dummy plug (I use the 1-resistor method).

[endriuska]

I don't have monitor plugged in - didn't have one when installed drivers, i connected remotely. I used drivers that came with CD, i did  not update or install anything else

[FreedomCoin]

Well im having some trouble with these new 6870s/5870s. When i launch cgminer it just crashes before starting, ive tried scryptminer and guiminer with simular issues.. cannot start mining.

Ive tried drivers 11.11, 12.3 and the newest 13.3.

running win7 64bit and cgminer 3.1.0

tried sdk 2.8 with 13.3 and used 11.11 by itself... no good

i havnt tried my 7790 yet that will go in another rig. But this new rig with my two 6870s is just app crashing (stack overflow) before GUIminer or CGminer will launch.

[wrenchmonkey]

Are you running it as a batch file? Try doing a "cd" to your cgminer folder, and manually entering the cgminer calls and see if you get errors.

I went home on my lunch and grabbed the adaptor, and had no luck. It still says, "clDevicesNum returned error, no GPUs usable"

Reinstalled SDK 2.5 and Driver 13.4. Starting to get annoyed.