Optimal R9 290 Settings??

[Clayce]

So  I have a rig running (4) XFX R9 290s for about 3.5mh/s. I was just wondering what are the optimal cgminer settings for these 290s. Right now they are all running around 83-84 degrees, is this too hot or are they suppose to run this hot?

My settings are:
GPU: 1000
Mem: 1350
Intensity: 20
fan speed ~75%. (auto)

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[Starscream]

So  I have a rig running (4) XFX R9 290s for about 3.5mh/s. I was just wondering what are the optimal cgminer settings for these 290s. Right now they are all running around 83-84 degrees, is this too hot or are they suppose to run this hot?

My settings are:
GPU: 1000
Mem: 1350
Intensity: 20
fan speed ~75%. (auto)

You can up the fan speed to 85%, but don't go above that.

Are you are getting 875kh/s with each (that's pretty good)? What's your WU like?

And for your question, 83-84 is ok-ish, under 80 is good. Did you undervolt?

[Cruncher]

You can up the fan speed to 85%, but don't go above that.

Why?

[Miz4r]

How do you undervolt with a r9 290? My card has locked voltages. Personally I try to keep the temp just below 80, and I run with engine clock at 980 and memory clock at the stock 1250 (upping memory clock doesn't do much for me). Hashrate is at 865-870kh/s which I am satisfied with.

[Clayce]

So  I have a rig running (4) XFX R9 290s for about 3.5mh/s. I was just wondering what are the optimal cgminer settings for these 290s. Right now they are all running around 83-84 degrees, is this too hot or are they suppose to run this hot?

My settings are:
GPU: 1000
Mem: 1350
Intensity: 20
fan speed ~75%. (auto)

You can up the fan speed to 85%, but don't go above that.

Are you are getting 875kh/s with each (that's pretty good)? What's your WU like?

And for your question, 83-84 is ok-ish, under 80 is good. Did you undervolt?

No, I don't think you can undervolt the 290's. Im getting 880-890 per card. Also what is WU?

[Starscream]

No, I don't think you can undervolt the 290's. Im getting 880-890 per card. Also what is WU?

I undervolted mine. WU is Work Utility, it's what counts really. KH/s is nothing if you're getting low WU.

How do you undervolt with a r9 290? My card has locked voltages. Personally I try to keep the temp just below 80, and I run with engine clock at 980 and memory clock at the stock 1250 (upping memory clock doesn't do much for me). Hashrate is at 865-870kh/s which I am satisfied with.

I undervolted using MSI Afterburner, mine weren't voltage locked.

You can up the fan speed to 85%, but don't go above that.

Why?

To prolong its life.

[Cruncher]

You can up the fan speed to 85%, but don't go above that.

Why?

To prolong its life.

You mean the life of the fans? (It would at least prolong the life of the card if it's cooler.)

[Starscream]

You can up the fan speed to 85%, but don't go above that.

Why?

To prolong its life.

You mean the life of the fans? (It would at least prolong the life of the card if it's cooler.)

Yeah, the life of the fan.

[crazyates]

Every card is different. A MSI 290 will hash different than a Sapphire 290. You need to find your settings that work well for your cards/system.

On top of that, each GPU will have it's own limits. Some cards OC better than others. Some will hash better than others. It's all a huge mess.

There are some known starting points for you to work off of. Example is the TC. A lot of people use TC 32765. Try what other people are using, and see what other people's setting get you.

If you're not happy with that, check out these two blog posts. They contain a set of scripts that you place inside your SGMiner folder, and run them with some set parameters. It cycles through, running a 5 min test with each setting, and then records the hashrate. Helps you see exactly where your cards peak, and where they fall off. You can use these to see exactly what setting will make a difference on your hashrate.

http://www.holynerdvana.com/2013/12/cgminer-optimal-thread-concurrency-for.html
http://www.holynerdvana.com/2013/12/finding-optimal-clock-speed-for-cgminer.html

I would start with the TC one, and set a middle-of-the-road core/mem settings, say 1000/1250. Run the full TC test, and see what it says your best TC is. Then run the mem test, with a core of 1000 and your best TC. See how high your memory goes. I can only guess, but I'm gonna say your mem probably runs best at 1250 or 1500, due to timing issues. Then, run the core test, starting really low and working up, to see how high your core should be.

You will have to edit the script files, esp when how it runs sgminer (it will try to run cgminer). Include your pool info, as well as known optimal settings, such as -I (or -xI), -g, -w, -k, and --gpu-fan settings.

[BitcoinHeroes]

No, I don't think you can undervolt the 290's. Im getting 880-890 per card. Also what is WU?

I undervolted mine. WU is Work Utility, it's what counts really. KH/s is nothing if you're getting low WU.

How do you undervolt with a r9 290? My card has locked voltages. Personally I try to keep the temp just below 80, and I run with engine clock at 980 and memory clock at the stock 1250 (upping memory clock doesn't do much for me). Hashrate is at 865-870kh/s which I am satisfied with.

I undervolted using MSI Afterburner, mine weren't voltage locked.

You can up the fan speed to 85%, but don't go above that.

Why?

To prolong its life.

I put my fan at 70% and out of 10 I have 3 not working after 2 months..