Topic: Can Any one suggest Best Setting for XFX Radeon HD6670 (Read 4450 times)

Okay looks like I had some corrupt drivers that were stopping it all from working. It's all sorted out now and running at 900core/1000mem. Thanks for the help

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You need to enable UNOFFICIAL overclocking to change the 'default' settings.

See: http://forums.guru3d.com/showthread.php?t=338906

You will get errors and crashes if I don't disable ATI PowerPlay in the MSI Afterburner config. i.e. "Set UnofficialOverclockingMode to 1 to keep PowerPlay active (may not work on old ASICs), 2 to traditionally disable PowerPlay or to 0 to temporary disable unofficial overclocking path".

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To enable the unofficial overclocking in this version it is necessary to edit the MSIAfterburner.cfg file located in the installation directory of AfterBurner (typically Program Files (x86) MSI Afterburner):

You need to alter the following:

Seek UnofficialOverclockingEULA field and add following text:

I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
   
Set UnofficialOverclockingMode to 1 to keep PowerPlay active (may not work on old ASICs), 2 to traditionally disable PowerPlay or to 0 to temporary disable unofficial overclocking path

In other words you need to edit your MSIAfterburner.cfg as above to be able to move the 'default' settings / sliders and yes the full text in blue above is what you actually need to add in the config.

Good Luck

hey there I have the same video card as Tadakaluri and have been following your instructions for the MSI Afterburner application. So far I haven't been able to move the sliders over and any numbers I punch into the Max field don't move the sliders any. I was wondering do I need to have the card I am adjusting be my primary card i.e. the one the monitor is plugged into? or can i make adjustments to it while using my mobos GPU with my monitor.

Once again thank you very much for taking lot of time to teach me every thing.

I must try those steps and will come back with results soon.

OK. Hence why you are using 2400 thread-concurrency i.e. 5 x 480 =  2400

The info. in the cgminer read me suggests to use 4 or 5 times shaders for best operation. This series of card seems to function better at 3200 and above. I in fact have mine (stable) at 3680.

cgminer -o --scrypt -I 14 -g 1 --thread-concurrency 3680 -w 256 --auto-gpu --gpu-engine 900 --gpu-memclock 800 --no-submit-stale

GPU overclocked by 100 and default memory clock. N.B. These are not my fully overclocked settings, these are safe / stable settings.

Once you have installed MSI Afterburner - try pushing the GPU Core Clock setting up by 5 or 10 to find a stable (highest) value, where you don't see any screen or graphic glitches etc. The higher up you get just add 5 each time instead of 10. If you see a screen error then quickly move it back down by 10 to 25-ish and that will probably be close to the optimal value. You can re-set it and do the same for the Memory Clock and then try both settings together, again reduced by around 10-25 each. If the screen locks up, then you need to hard reset your PC (by holding down the power button) and waiting 10-30 seconds before a re-boot. You have a good amount of system RAM, so you should be OK to move the sliders back down, if your quick, before a full freeze-up (also give the system 30 seconds to respond if this happens).

You can't cause your GPU any real damage by doing this, only increasing voltage etc. will potentially wreck your card or make it unsafe.

I was incorrect in my post above and your default clock speed on that card is also 800 MHz ? So, around 900 to 920 is probably the max. ?

Please post your results so that I might try to help you further. Also, bare in mind that your card does not have a fan, so watch the temp. It should be OK though as it looks to have some crazy heat sink.

This is interesting for me in regards to something that I'm working on with system RAM and scrypt mining.  

Thanks

I installed the App and my card have  480 Unified Shaders.

Download MSI Afterburner - see: http://event.msi.com/vga/afterburner/download.htm

You need to enable UNOFFICIAL overclocking to change the 'default' settings.

See: http://forums.guru3d.com/showthread.php?t=338906

You will get errors and crashes if I don't disable ATI PowerPlay in the MSI Afterburner config. i.e. "Set UnofficialOverclockingMode to 1 to keep PowerPlay active (may not work on old ASICs), 2 to traditionally disable PowerPlay or to 0 to temporary disable unofficial overclocking path".

Sure. Please download GPU-Z - http://www.techpowerup.com/gpuz/ and let me know how many shaders this card has.

Thank you very much for your detailed information.

Presently I am using following settings in GUIMiner:

Thread Concurrency: 2400

Work Size: 256

Vectors: 1

GPU Threads: 1

Extra Flags: (Nothing is put there)

Intensity: 14

So is there any suggestions?

I have a SAPPHIRE HD 6670 2GB DDR3 in one scrypt mining box that I have.

See: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1088&pid=1218&psn=&lid=1&leg=0

I brought it recently because I wanted to test some stuff with scrypt mining which is very RAM intensive.

This card has 'Hyper Memory Support' See the chart in the link.

Up to 2.8 GB Memory Support with Hyper Memory
Enjoy the big memory frame buffer with Hyper Memory Technology.
Hyper Memory Support Matrix Under Windows Vista and Windows 7.

On Windows 7 x64 I've managed to push this card to around 130 kh/s (stable-ish) to 145 kh/s un-stable with some serious overclocking and messing around with the voltage settings and some other stuff, which is generally unsafe to do and not to be advised.

Interestingly enough it struggles to get above 90 kh/s in Linux Ubuntu, even with the (correct) same drivers and overclocking. In other words the Hyper Memory Support can really make a big difference when scrypt mining.

Your card: http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1088&lid=1&pid=1240

Has a faster clock speed and more video memory, although it doesn't have Hyper Memory Support. However, if your using the 'default' thread-concurency of 3200 ? then I can probably dig you out some settings to improve on that using cgminer.

Again, as someone mentioned above, in many respects its almost best to under-clock the memory and just over-clock the CPU to save on power and get the best ROI etc. There will probably be a ratio for this card, where under-clocking the memory, won't affect the highest possible hash rate, once you have found the optimum thread-concurrency and the highest most stable CPU overclocked speed.

You probably won't get much above 120 kh/s tbh, but correct optimization will save power and can churn more shares!

You could always use guiminer

I think that is as much as you can get with that card. Not sure if it is profitable at all considering the power costs.

Hi,

Please any one suggest me best settings to get maximum Hash rate from my 6670 card.

Following is my System Config:

CPU: i5 2500 3.2GHz

MBoard: DH67

Memory: 8GB

OS: Win 7 SP1

Graphics Card: XFX Radeon HD6670 1 GB GDDR5

At present I get only 120 Khash/s from GUIMiner + 30 Khash/s from Scrypt Miner GUI (In total 150+ Khash/s)

Please let me know is this enough from this GPU or can I get more with better settings.

Any suggestion are welcome and thanks in Advance.