Thanks for this info. So question (to make sure I'm understanding this properly)
Say I have 10 cards each operating at 400khash for a total of 4ghash.
Am I correct in assuming that if I just have each card mining on it's own (IE 10 x 400khash) there's a chance that one or more of those 10 may be trying the same combination of hashes and thus reducing my overall effectiveness?
Corollary, is it then correct to assume the reason people pool their own cards it because it's more akin to having 1x 4ghash system working on the problem with no chance of duplicates, whereas the other way you might be wasting GPU power theoretically?
Does that make sense to anyone or do I not understand this at all.