Bitcoin Forum

I just received my new 5830s

Their currently running at 900mhz and giving me about 250mhs each.

I read https://en.bitcoin.it/wiki/Mining_hardware_comparison

I want to try to reach the 300-310 mhs range. What combo do I need for this?!

I am currently running GUI Miner on windows 7 32 bit.

If you need more info let me know.

**PS: I tried to use RIVA Tuner to go over 900mhz but it kept dropping my fan speed down to 25% by itself so I decided not to use it. If not I would not be posting this.

try to use MSI afterburner or sapphire trixx. the trixx software will allow you to change the voltage i believe. and also, most 5830's are stable with core over 900mhz, so try bumping up your core clocks a little.

I have MSI Afterburner installed and it does not let me go past 900 either, I think it may be a BIOS issue. Yet I doubt it because RIVA Tuner goes past 900 but then it f*cks with my fan settings.

go to the MSI folder located in your program files folder, and open the afterburner config file. then change the unofficial overclocking mode form 0 to 1, and copy and paste this in the EULA:  I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it. save that file, and restart afterburner. your upper limit should increase past 900mhz  ;)

EULA?
edit: EULA End User License Agreement, ok but where do I find the EULA?
edit2: found it thanks!!!

ya, did you find it? the EULA is the first line of the last paragraph in the config file. i forgot to mention that you have to open the config file with either notepad or wordpad. then copy and paste the bold text i just typed into that EULA area.

Just use trixx, it's easier to OC with it.  If you set it to 970/300 it should be stable on stock voltage and get you about 310 mh/s.

Yea got it all up and running. Yea I knew about the notepad. The system was giving me issues saving it (had to run as admin). Got it all working thanks again!

i used to trixx to push mine to 1025/300  cooling is very imporant though that's where i was hitting 80*c which while ok for this card is a bit uncomfortable to look at. that netted about 320mhash and might get you 330 there have been some improvements to the miners available since i swapped the card for a 5870.

Try going to 1040/355 and use the phatk mod (http://forum.bitcoin.org/index.php?topic=23067.0).  I'm getting a stable 329-330 MH/s out of mine the last 24hrs.

I get 329 from 1030/300 you might want to try Diapolo's update to the kernel if you use phoenix.

I am having issues staying above 950mhz. It lasts for 12 hours and then it drops. Does not seem stable for prolong periods of time. Is it possible this is because of my PSU?
I am using a Rosewill 700W (only 72% efficiency though)
I am using a AMD Sempron CPU so nothing else in the rig consumes power.


My temps stay below 62'c on either card so it is not temps.

It depends on who made your card the people saying they get above 1000 mhz I believe all have saphire cards. In my experience the saphire cards can be pushed up to around 1040 on stock voltage

1040?

Damn I got a bad batch, err batches. I've never hit 1040 on a stock sapphire (extreme or otherwise). Guess I should do some more testing. =)

Yes mine are Sapphires as well.

Great thread. Does anybody has similar tips for 5830 overclock on linux? I have used the aticonfig which does allow core overclocking but the memory speed range it allows me to set is very small (only around 100 less than stock).

Do I need to flash the bios or is there any more advanced tool on linux?

I have little experience overclocking in linux myself so I'm going to point you to this thread.
 http://forum.bitcoin.org/index.php?topic=11087.0

I don't know about 5830s but with my 5850s I can underclock the RAM using AMDOverdriveCtrl.  Create a profile and set the RAM clock speed to the speed that you want and then apply it with.

('-i 0' is the interface, run 'AMDOverdriveCtrl --help' to get a list of your interfaces.)

This worked for me with early versions of Catalyst (11.5 and earlier).  I was not able to overclock above the BIOS maximum but could go below the minimum with this trick.  It is important that you set the same RAM clock setting for all three performance levels.

Thanks! I have managed to compile it with a tiny bit of effort.. when I will be sitting in front of the miner I will try it out (as I understand it needs a bit of GUI for the setup)

No GUI required.  AMDOverdriveCtrl can work in batch mode (hence the '-b' flag I gave above).  I don't remember exactly but if you run the command once it will generate some default profiles based on your cards and put them in "$HOME/.AMDOverdriveCtrl".  You can then edit the profile and apply it with the line I gave above.

Here's a profile I'm currently using for my 5850 if you can't get it to generate one for some reason (the voltage may be a little low for a 5830).

I just installed 2 brand new 5830's saphires from newegg into my 6th miner.  I use win64 guiminer with prclm
I use msiafterburner and have experience with over clocking 6950, 5870, 5830, and 6850's

anyway,  brand new msi board, 1000w power supply just tried to do a 900 clock on the new 5830's and immediately crashed...  I wonder if the new cards cant be over clocked like the older ones?

update:  I added 2 5870's to the same mother board and overclocked them to my standard 960/450. they are running at about 400Mh.   now added the 5830's to the same board and decided to over clock the 70's, but leave the 30's at stock clock (lower mem) to 'burn them in' for a while and will adjust them later.

This overclocking is tricky business.... as I have read the forums it seams that every setup is different. I seam to not be able to stably overclock cards as others claim to be able to do... 

No idea Jim ,
Today I had it had 975 and it lasted about 18 hours at that speed and crashed.  Since I am not home during the crash I still do not know if it is the boards or maybe loss of power (we have had storms here lately) or what.  Good luck.

I'm not sure about the $130 version but I picked up the 110 around the end of June and my cards are completely stable at 1030 mhz.

Every card is different though.
I have 2x 5830, one is stable at 1030, hit the limit at 1045, the other one will always crash if it goes to 1020, both bought from newegg at the same time.

pretty much based on your luck...and your card.

Agreed.  My two 5850s are identical on the back (all codes are the same) with the sole exception of a black circular stamp for which the first reads "TEST PASS 61" and the second "TEST PASS 63".  I'd guess they were near to each other from their creation.  At stock voltage one card hits max stable clocks at around 970 MHz and will often crash instantly at 990 MHz, the other goes to 1020, crashing at 1040.  After a 0.1V undervolt I did all the testing again and found max stable clocks of 845 MHz and 895 MHz.

I tried swapping them round on the board thinking it was a heat issues, and later tweaking the fan speeds to keep the cards at the same temperature, but still the 'lucky' card was quite a bit faster.

My lucky card lived up to its name last night when I decided to start mining namecoin.  It found a block within 90 minutes of me starting :).

Thats true they do vary by a little but what you just said is a 2.5% difference. He said it crashes at 900  mhz and its a saphire. Going off your 1020 mhz example thats a 13% difference and both of his cards are doing this. It just seems a little weird to me thats all.

There are many factors which have a significant impact on a cards stability and even a simple thing such as disabling Flash hardware acceleration can allow one to reach a higher stable clock rate.  There would likely be a long list of differences between the card which crashes at 900 MHz and the one which runs fine at 1030 MHz.

What I find interesting is how two seemingly identical cards, run in the same slot of the same mining rig, kept at the same temperature, configured and maintained in the same way, can have such different maximum stable clock rates.

How much power does a 5830 need?  I did some research and saw that each one takes about 380W at full load? Is that true?

The Maximum board power as per ATI(AMD) specifications is 175watt. you could excede this overclocking but to that degree they must be refrencing complete system power not the card alone.

refrence

http://www.amd.com/us/products/desktop/graphics/ati-radeon-hd-5000/hd-5830/Pages/hd-5830-overview.aspx#2

Most likely no. using 2*5850 with 550w corsair PSU, both ~10% OC'd (mem clock at 300 though), 2*1tb hdd, i3 530.

Barely any fans (1 chassi fan, 2 fans for gpu, 1 for cpu, all stock), no cd/dvd drive.

However i don't recommend 550w for 2*5850, i'm actually a little bit scared something might fuck up.

tl;dr: they most likely run at max 150w at full load, let's say 200w to really be safe:
Calculation to determine how many watts you should get to be really really be safe: 1.10*(175*x cards)+150=whatever
(*1.10 because PSU is not 100% efficient)
Having about 50w less than what this calculates shouldn't be a problem though.

Did not see that thanks!