Anyone can explain why when I mine on BTCGuild with my 5870@970/300 + 5750@890/300 Phoenix says that my hash rate is 420Mhs +175Mhs = 595Mhs, while my account page on BTCGuild says that I am around 490-500Mhs? Am I being scammed? Thanx
You are paid for the number of shares you submit - which, although is somewhat related to your hash rate, there is no exact relationship, only an average expected one.Simply check that the site share count matches your program's accepted share count (which it should)
Shares are also generated based on luck - on average you should expect to get one share per 4billion hash attempts (2^32) - but a share is equivalent to a block at difficulty=1 - thus the same rules about random probability come into getting a share as for blocks.
The web site does not know your computer hash rate, so it estimates it based on your shares that are submitted - which is sometimes higher and sometimes lower than your actual hash rate.
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