Dual Core is basically 2 CPUs packed together. But since the 2 Cores are closer to each other and interconnected, the effeciency is a bit higher than 2 CPUs through HT. Clock for Clock, Dual Core is 0~5% faster than 2 Independent processors depending on application used.Quote:
Originally Posted by suryad
Opteron requires ECC+REG memory modules which are more expensive, and Athlon 64/FX does not. Opterons are meant for Workstations and Servers and AFAIK they have a upper multiplier lock unlike the FX.
The ECC+REG memory is slightly slower and is not suitable for overclocking.
Since ECC+REG memory with slow timing is pretty slow compared to Fast DDR500+ type low latency memory, Opterons have 1M Cache each core and A64 only have 512K. A64 Dual Core should have the same performance as Opteron 24x/25x Clock for clock.