i just got on to btcguild so when i figure out how to mine i can use it, but was wondering about one thing

pool speed right now is at 1.8 th/s

if there a difference in the amount of btc you will get depending on your hash rate? like if i say only do 333mh/s or if i go over the avg say 3 TH/s will the payout always be the same?

thanks for any help

Before bringing in the factor out of anyone's control (variance/luck), there is one thing to remember on ALL pools:

Your expected value per share is in no way tied to the pool speed. Your expected value per share is Your Speed compared to Network Difficulty. A certain hash rate will always *expect* to get a certain payout at a given difficulty. It doesn't matter if you're 300 MH/s or 300 TH/s. It doesn't matter if your pool is 1 GH/s or 3 PH/s.

As far as I know, there is no payment method where this is not the case. There may be small caveats, but in general if you mine at X pool, it doesn't matter what that pool's speed is, or what it's particular brand of payment method is, as long as it's not a flawed method (hoppable), and as long as the pool is stable and doesn't have any kind of bug hampering it's overall BTC generation.

What larger pools offer is reduced variance. This does not mean variance immunity. Since you're on BTC Guild, you can flip over to the PPLNS Stats page and look at the graph at the bottom. Each point on the graph represents approximately 50 minutes (one shift). You can see certain times where a block of 50 minutes worth of hashing only made 42-50% of what it would expect. Other times where 50 minutes of hashing may have made 150-200%. In the long run, it has been ~3.5% above expectation (lucky).

The big difference on a larger pool is how quickly the pool returns to the expected payout range. You might have really bad luck. You might have really good luck. That doesn't change on any pool (except for PPS-based payment methods, which are higher fees). The difference on a large pool is generally if you look at the average variance during a single difficulty, it is more likely to be at expectation. Smaller pools will (generally) be further from expectation (but it can swing in your favor just as easily as against you).