If they're all 4GB cards, maybe 800 YAC per day?  If they aren't 4GB cards, YAC is probably not going to be the best choice for you.  Give a visit to http://whattomine.com and put in the hash rates you get for each algorithm - fredeq is pretty accurate on what is most profitable to mine.  I find each to be higher than actual payout, when you compare them to each other it's moot if they're all slightly high.

YACoin is on there - you have to select and enter an NFactor 15 hashrate.  YAC is at the top for one of my rigs at 500+% profitability of Litecoin   It's third for my other rig, but still over 300%.

It's doable with 2GB cards, but the hashrate is going to be sub 1KH/sec.  Granted, it will be using a lot less power than anything else at that point as your card is memory bound in a big way and will only be using about 33% of the shaders (1280 shaders into 2GB = *sadface*). 

Just point it at the R9 270 2GB YACoin multipool... ok that doesn't exist YET, but that is what I want to say I just posted about it in forums.yacoin.org

Ah that makes sense, thanks! Have the 2GB version and can't get past ~610 h/s. Sending a bit of YAC your way

Groko's been doing some work on the POS miner through the YACoin client.  Looks like he found a world around to some of the long-term concerns.  I thought I would share the link here to increase awareness.  I believe he recently made a pull request to have this items added to the sourcecode.

http://yacointalk.grokonet.com/t/pos-mining-performance-boost/67

Just noticed the upcoming improvement in client and POS performance/handling. Thank you for the good work. 

OMY, why should they support adding coins that prove stable, have a history, and are resilient?  You want scam coin of the week?  sorry, not going to find that in this thread Mr. 1 poster..

Great to hear!

I am not savvy enough to warp my mind around the combine feature, so I am a little lost in the technical details.

"The old rules were designed for a paradigm that no longer
exists for YACoin. POS blocks are no longer expected to
completely replace POW blocks in some utopia of energy
efficiency. There is no longer any need to split coins into
tiny pieces in order to generate large numbers of POS blocks
in order to 'secure the network'"

I absolutely completely agree with Groko in this statement above. And it is annoying that I have to constantly monitor my transactions and use coin control to manage the smaller inputs creating from splitting after a POS block. I was actually thinking about that recently before I read Groko's thread.

It seems like this update won't even be a 'fork'. There is no risk of any issue if let's say cryptsy doesn't update their wallet. It is just a matter of optimizing POS without having to fiddle with coin control all the time? Sounds like a fantastic improvement and yet another feature that will surely be copied by other POS-POW hybrid coins.

I can't wait to update my wallet with this feature soon. Thank you so much.

A few people told me to check YACoin again to add to CPU Coin List since the difficulty made GPU mining much harder. Is that true?

I tried to check the HW stats on wiki but wiki is dead.

Is there an up-to-date list of GPU has rates?