+1

- Afterburner, no. Watching temps/fan with Trixx but no adjustments of clocks etc yet. Recommendations welcome. (Do I void any warranties when over clocking?)
- Not sure what power I'm at. Again tell me.
- Getting ~550kh per card.

They're in a case (butt up next to each other) I can run the bottom one by itself and runs at 70 C but whenever I put the top one on. Bang, up to 100 C. Just installing another fan now straight onto the gpu.

I'm aware they can run hotter than average cards, so I asked a tech at a PC shop if it was too hot and he said "Is the card failing?" and I said no. "Then it's not too hot." But we both agreed obviously lower is better.

Any recommends welcome.

[Update] I had the fan on the side of the case on extract. I flipped the fan around and temperatures dropped by a couple of degrees C. (so still 97 C). Using GUIMiner=scrypt 'high usage' but even on low usage the temps get to in the 90s

[Update 2.0] I'm glad i trusted you guys and myself (and not the PC tech guy.) After dismantling I found my newbie error accidentally pushed the gpu into the PCIx4 slot instead of the PCIx16. Fixing that brought the temps down to 88 C and below 100% fan speed.

Looking forward to v0.04. GUIMiner-scrypt has helped a newbie like me stay away from the console.

Might the next version include checkboxes for:
--auto-fan
--auto-gpu

As I'm concerned I'm running my cards too hot. 99C and 100% fan. Or is that expected? (2x 7950s)

Hmmm. I'm running 100C but fan is not 100% yet.

[Correction update] Sapphire Trixx tells me. 90C and 99% Fan.
GUIMiner-scrypt on 'low usage' setting at these temperatures. Man, what's up?

I'm hoping to mine Litecoin 24/7 on this machine.
(2x Radeon 7950)

What max temperature would you be happy running gpu at?

(Using HWMonitor to gauge)

Mining Litecoin. GUIMiner. 2x Radeon 7950s

Should I use crossfire? or just have the cards separate?

(and what's your similar setup?)

I think I've resolved this.

I was originally using GUIMiner v.02 which came bundled with cgminer 2.10.

I am now using GUIMiner v.03 which uses cgminer 2.11.3

This solves issues with my Radeon 7950

Found latest here: https://bitcointalk.org/index.php?topic=117221.msg1256502#msg1256502

Just clarifying I'm talking Litecoins and Khash/s

Well I gave Coinotron a try today and the same issue. So it doesn't seem to be a pool issue. No pretty graph on their pool to show you but:

GUIMiner (litecoin edit)
Default settings for Radeon 7950 = Steady 296kh = Pool speed ~300kh
Change Intensity to 16 = Steady 484kh = Pool speed ~100kh

Tested over at least 100 accepted shares on both Stratum and not. Same result.
So it seems for some reason the increased hashing speed locally is resulting in lower hashing speed on the pool.

I read another guy saw a similar issue: http://forum.litecoin.net/index.php/topic,1957.0.html

I think it does matter what hash speed is reported on your pool's end as that's the result of valid shares and rewards dished out.

Still unresolved.

Will try coinotron.com right now. Do some more tests and report back. Thanks.

Mining Pool: https://lc.ozcoin.net
It's confusing that I can get my reading to ~550khash/s on GUIMiner if I up the settings but it translates to a lower outcome of khash/s in the pool.

Forget the average line (it's skewed by previous low testing on my mac)
I'm averaging about ~300khash/s

If I increase intensity or concurrency settings I actually get a lower hash rate in my mining pool.

Getting my first Litecoin rig up and running on the weekend was more satisfying than I was expecting. Looking forward to my new hobby.

Hi, yes I'm new.

Glad to say my weekend project was setting up my very first Litecoin mining machine. After much reading and testing I have some of my own results to show and would appreciate any comments.

System Specs:
Processor: AMD FX-8350  AM3+ 8-Core
Graphics Card: 1 x Sapphire Radeon HD 7950 3GB
Motherboard: ASUS M5A99FX PRO R2.0 AM3+
RAM: Corsair 8GB (2x4GB)

Mining with GUIMiner-Scrypt alpha (7950 cgminer)
OS: Windows 7

After reading some setting configurations https://bitcointalk.org/index.php?topic=117221.0 I tried some tests and got conflicting info.

http://d3j5vwomefv46c.cloudfront.net/photos/large/755857527.jpg

It seems when I pump up my concurrency and intensity I can get a reading of ~550khash/s in GUIMiner. But this actually significantly reduces my recognised rate in my mining pool. It seems the best settings in GUIMiner are it's defaults concurrency: 8192 and intensity: 13. For ~300khash/s recognised the same in both GUIMiner and Mining Pool.

Is this correct? Can anyone shed some light?