PS3 Has “Tight memory, Poor IO Performance” – John Carmack

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Booh! said:

No. He was requested to let us know if he could improve the game performance on ps3 or not. He was clearly pissed off and gave this harsh answer, that sounds a lot like an excuse. Q. : "Be professional and speak clearly: can you do something better?" A.: "The hardware is shit, it's not my fault".

It's an excuse. He could have simply answered that he had not enough experience on that kind of hardware, that he had not enough time to optimize the performances, that he miscalculated the tasks for those hardware capabilities. But saying that is just an excuse, 8Gb is not the largest install, and RAM is not that tight (it's even on a double bus, a feature that common pcs have not)...

This is basically what I was trying to get at, but you explained it better.