Bitcoin Forum

something seems to be wrong. no mods that i do with overclocking helps. it's stays at 100 mhash. I checked https://en.bitcoin.it/wiki/Mining_hardware_comparison and saw a guy with a vapor-x who had 200? I run phoenix with the following tags:

-k poclbm DEVICE=0 VECTORS BFI_INT AGGRESSION=5

I did a little bit of searching on 5770 but nothing came up.

Is somebody wise enough to know if I simply suck or if I'm just unlucky with my GFX

Did you try upping the AGGRESSION to 8 10 or 12?

Yes. stays the same :)

I'm not too familiar with the 57xx series. Have you tried any of the overclocking programs or are you just running the card with the stock speeds?

Do you have other programs running on your computer when you're running the mining software? Make sure you have everything else closed when you try it.

I've tried both catalyst and afterburner. getting no difference in any :)

- well I'm using utorrent, skype, chrome and messenger and ofcourse bitcoin server and the two consoles with phoenix and for my 6850 poclbm.exe. using like 2 gb ram out of 6.

Skype and Chrome both use video card resources. Depending on what messenger you're using it might use flash for ads and flash has the ability to access video card resources to speed up processing. Try closing all of them and running it without them all. Anything accessing video resources can impact mining speed.

Just tried to close everything besides the miners. no increase at all.. stays at 98 mhash/s

Try the GUI Miner (it's the fastest to set up) also what is the core clock?

Coreclock is 960mhz. can't increase more.

and tried guiminer too. same story.. :(

My 5770 at 900/4800 MHz - 195 Mhash/s
Phoenix 1.48
phoenix.exe -u http://worker:pass@btcmine.com:8332/ -k phatk DEVICE=0 VECTORS WORKSIZE=128 BFI_INT AGGRESSION=8

Driver 11.5 with APP 2.4
AMD Sempron 3200+
1 GB DDR2
PCI-E 1.0 x16

very very strange  :-[ try different versions of the sdk 2.1->2.4

Try this:

-k phatk DEVICE=0 VECTORS BFI_INT FASTLOOP=false AGGRESSION=9

I'm running 5770's at 960 with that command and getting about 212-213 Mh/s

Also, what is the temp on the card?  It will slow down a lot if the temp gets too high.

Really? Aren't GPU's built to withstand 90-100C heat without affecting performance?

My experience with the 5770's is that at some point they slow down due to the heat...  That is somewhere north of 80C when that happens, my Mh/s rate dropped like a stone, it was reproducible on my cards...  once I drop the temp down no more problems.  Might just be my model of the 5770's... but I wouldn't want to run a card that hot 90+C for very long.

Okay, I always try to keep my cards below 80C anyway. I just had an X1900 six years back that used to run at about 95C idle. The temp didn't raise anything when stressed though. Could just have been a broken sensor.

its 60-70 degrees. :-) will try more later

Are you sure you don't have anything running in the background that could be using the card's hardware video decoder? It could lock the core to 400 MHz and cause it to ignore overdrive settings.
What's the current clock speed displayed on the bottom of the CCC overdrive tab (not what the slider is set to)?
I used to pull up to 210 on my 5770.

I will answer this once I'm done gaming for the day :-)

Hello boys and girls. after some gaming I decided to go ahead on fix this problem, so I downloaded amd gpu clock tool.. that fixed it from 157 mhz -> 890 :)

now it works at 190 mhash and I'm satisfied :) thanks for all the replies guys. I'm a little concerned about it getting 85 degrees, but my friend says it's no problem! :) so I'll be mining! ;)

I would definitely recommend keeping the card at 80 C or lower. turn the fan up to 100% if necessary, or install extra case fans.