Radeon 7790 @ 240 kh/s

[sunsofdust]

I have been reading posts on this forum for some time now, but never got around to creating account.  So for now I can only post in the newbie section.

Anyways, I got 2 Radeon 7790's up an running and have been able to reach 240 kh/s on each card with temps around 52 c.  I spent several hours tweaking the setting in Reaper since I could not get cgminer to work at all, or at least find a configuration that would not cause cgminer to crash.

Just curious if anyone else has a 7790 and what hash rate they are getting and if you were able to use cgminer.

[Tw1ser]

As stated here, https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison your cards are doing fine

BTW if 52 is the top temps u can get, you could actually overclock it a little bit, BUT some people prefer not to do that because some times it may cause hardware errors and rejected shares/blocks because of lag and also shortance of GPU life span, it's a personal preference to do this or not.

[eadmanday]

I have my cards overclocked about 150Mhz on each card. They are running at a cool 66c.

[pazsion]

So what is the point in doing this? speeding up the rate of peoples bitcoin transfers?

[Tw1ser]

I have my cards overclocked about 150Mhz on each card. They are running at a cool 66c.

Ok, you are fine then

So what is the point in doing this? speeding up the rate of peoples bitcoin transfers?

What's the point of doing overclock or what ?

[sunsofdust]

What's interesting about this card, I get better hash rates when the card is down clocked to 800 MHz vs the default of 1000 MHz.   It gets even worse if you try overclocking it.  Either way I am happy with the hash rate of 240 kh/s, especially considering I dropped the voltage and each card is pulling less than 80 watts.

[docjunior]

Sunsofdust, how low did you set the voltage?

[and0r]

thats a really low hasrate bro
even at 80w

[sunsofdust]

I didn't exactly change the voltage since MSI Afterburner didn't give me that option, but I did change the power limit from 0% to -10% and in GPU-Z it showed the voltage drop from 1200 to 1065 mV.  The voltage seems to fluctuate quite a bit though from 1065 mV to 1150 mV. 

Hopefully when a newer version of the MSI Afterburner comes out I can change the voltage directly, but I think on the Sapphire cards that I have the voltage may be locked.

[sunsofdust]

and0r - Even for LTC?  On BTC the hash rate is about 280 mh/s.

[DRKMSTR]

Care to share your settings?

I can only get mine up to 220kh/s via the litecoin hardware list. I've been working on mine for hours yet only have gotten a minimal increase.