No problem! Whatever coin I mine I tend to find real returns are lower once you take in to account pool fees and random losses through orphans etc. I was mining UTC for quite some time (including again recently for a week) and that was particularly bad. It never seemed to matter which pool I tried but I always got 30% less than calculators said. Other coins have been much closer to predicted - within 5-7% which matches up with fees etc.

Also, new groestl numbers look awesome Christian! Impressive job.

Will be a big boost in earning rate but I expect difficulty will shoot up when you release and we all jump on

Guys, use whattomine.com for profit calc. It's constantly being updated, takes in to account power and is clever in that it will show current estimate and also historic over time

Cant check screenshot at work but are you using version from 28-2? You need to use that version for nonstandard scrypt. The new compiles from source won't work with them until Christian is able to fix.

I seem to only get 2.8MH for GRS on Linux with my 750Tis. That seems low compared to others. I've corrected the spelling mistake in the maxwell or fermi flag before compiling; however, do I need to make any other changes to ensure it is correctly compiled for the Ti?

Absolutely brilliant film!

The other thing is system RAM - I have 8 gig. I believe the high n-factor coins use a fair bit of actual system RAM or virtual memory.

To be honest I think that config was posted on overclock.net - I'm really not sure how to fine tune batch size, and if I remember when I tried without or smaller size there wasn't a huge difference.

Are you running on risers? I am straight in to the board on two full size slots. Funnily enough I am actually running two Palit 750 Storm X OC (single fan) as well... I am on Linux though. Using 28/2 version of cudaminer. Usability is not an issue as it's a server that sits in a cupboard and I occasionally log in via VPN

Na, 60W of that is for the system - probably some of that is due to mining but most background of the server doing stuff.

Put my figures it in my earlier post with my YAC startup parameters. With YAC I measure 50W at the wall per card, but not overclocked (am using Linux); HVC pulls around 43W, scrypt and scrypt N 67W or so

Ah OK. My server draws 160W mining YAC with two cards, but I discount 60W because it would be using that even when not mining. HVC was like 145W. Not tested GRS.

I am guessing your power must be expensive.... mine is 11p per kWH and Scrypt multipool with 2 cards gives about £0.55 a day in terms of profitability.

Hmm odd, seems strange that the config works well for me but not you guys :S As I say, I get about 3.2KH like that.

Make sure you take in to account power usage when doing profit calcs (which is why whattomine is nice). What hashrate do you get on Groestl? The calculator I checked for that seems to suggest that at 3khs a card I'd actually be better off mining scrypt. Have I got the groestl hash rate wrong?

On 3x750Ti?! Seems crazy high hash rate compared to what I get What does the actual miner window report? The pool tends to give crazy up and down numbers as the submission of shares can be a bit "peaky".

Ram usage wise I think I use 50 - 75% or something like that

Hehe fair enough! Yeah, I think generally YAC is pretty steady returns. My config is -l t64x1 -i 0 -m 1 -L 2 -b 4096 -H 2 and that nets me about 3.2KHs per card (I have 2) on 28-2 Cudaminer. I measure 50W at the wall per card, but not overclocked (am using Linux); HVC pulls around 43W, scrypt and scrypt N 67W or so. With the cost of UK power the savings help!

N-factor change for YAC is end of May I think, which I expect will take tons of tweaking again and will also hammer ram and vram requirements.

Pool wise you can use:
https://www2.coinmine.pl/yacp/index.php
http://yac.m-s-t.org/
http://yac.ltcoin.net/

All work fine for me.

Am debating getting another card, but would need to replace my mobo and buy some risers... plus I may never actually make the money back!

Hi mate, the whattomine.com link that ivan posted has the core coins (except groestl). It's good in that the link stays in play so all of your hashrates etc. can remain filled in. You just need to refresh it to get an update. I decided to abandon my planned calculator after I saw they had updated whattomine.com to have more coins!

That would explain yesterday; however, it seems to be pretty consistent. I mostly use Greek but previously used utc.pool.pm and had similar problems with being quite far off what was predicted.

Hi guys, really exciting stuff going on in UTC land! I tend to mine YAC or UTC, but I am finding often when I mine UTC I end up with far less coins than expected (30 - 40% less than theoretical max). Don't have the same problem on other coins. Usually I mine on Greekpool. The number of orphans don't seem that high, so I am wondering why it's turning out so low? Any ideas? 

Thanks Ivan,  whattomine has definitely fleshed out the selection of coins! That saves some effort.

The main issue I find with some of the smaller coins (even things like HVC and YAC) are the block explorers are sometimes down/not up to date, which gives figures that are not accurate. I think the only way to get accurate numbers is from the wallet itself. Was thinking about spitting out numbers from my mining machine to feed in to the calculator.

Sounds like chasing new coins is the best way to profit, but seems to take a lot of time. Having said that, I spend so long messing around with this stuff that it would maybe make sense to do it... Sadly I only have two 750Tis, my significant other isn't so happy with me investing more hehe. Maybe if I upgrade my own PC to next flagship maxwell card when it comes hehe

Thanks mate.

You're UK based right? I just wish our power didn't cost so much! Eats so much of any profit margin, once you take in to account pool losses etc. vs calculators - even with 750tis. At least if bitcoin price stays highish then its's not unprofitable.

A lot of people do seem to neglect he readme... I think sticky guides with help with that. There are also several posted by Raven which have configs for 750tis.

I'm going to see if I can put together a CUDA calculator that's focused on profitability of the common coins nvidia miners target. At the moment the calculators are dotted all over the web. Just need to find some time away from work and get some skills (last time I dabbled in site building properly was when GeoCities was in its prime...)