With UA.A, the performance between the Core i7 920 and Core i7 870 was very close while the Core i5 750 was just a few Mop/s behind. The Phenom II X3 710 ran at less than 50% the speed of the Core i7 920 / Core i7 870.
The best copy memory performance with the OpenMP version of Stream was found to be with the Core i7 920. However, it is not surprising considering this processor with its triple-memory controller did have three DDR3 modules installed in the X58 motherboard. The Core i5 750 / Core i7 870 both had higher performance than the Phenom II X3 710 using the same memory modules and settings.
The ordering of the memory scaling results were the same as the copy operation.