Hash Rate Summary vastly different from 50BTC Dashboard

[19deltasnafu]

   First of all let me introduce myself.  My name is David, 47, love computers, Disabled Vet.

I struggled for a few weeks and finally got my rigs up and running.  I'm Using 50BTC and the hashrate on the 50BTC Dashboard is usually off about 500 mhs or MORE than what my Bitcoin summary shows.  Is this Normal?  Here is a pic of my main rig, the BTC rigs are minimalist and in cheap cases, so to be working on racks (another post).  This is my main rig.................

I7, HIS Ice Q7950s, H80, Silverstone RV03, triple BenQs.

http://i117.photobucket.com/albums/o48/looker12/IMG_0167_zps5cf129b4.jpg

http://i117.photobucket.com/albums/o48/looker12/IMG_0205_zps1f1de26d.jpg

Thank all of you who reply.  I will do my best to do more reading than talking also.  hehe.  When I say "do my best" that's because I might need to ask some questions to understand what I'm reading.  hehe.  Complicated stuff.

[sliding scale]

Hello David, Sorry I don't now the answer to your question but I saw your post and wanted to make a couple of questions.

Are you running two 7950's or how many?

How big of a power supply do you use?

I know that GPU mining can not always be worth it especially with BTC unless you get cheap or free power. What is your power situation? Do you live in an apartment with free electricity?

BTW all the lights are pretty.

[19deltasnafu]

The rig you see is my main computer.  Electricity is 6 cents a "kw" or whatever measure they use.  I have two 7950, 3 7870s (tahitis), 2 6850s, 2 7750s, one 7850, one 6790.  My bitcoin rigs and no where near as nice as my main PC.  They're semprons processors, asrock extreme4 MB, and.............. well I have many different processor board set ups but I understand the dedicated minor rig minimalist theme.  OS on jump drive.... etc, etc.  My sons come over and game on the 7950s with eyefinity.  As far a PSUs i have 750s, a couple 1000s and some 600s to run the single 6 pin cards.

[sliding scale]

Ok, that's pretty sweet. I am actually a little jealous with that many GPU's. $.06 is pretty good for electricity too.