I fail to see the point on the 8 core cpu topic all the way around, last i checked a twin is {ball park number} is 50% faster then a single and a quad is 25% faster then the twin in real world apps.
Following this logic that means a 8 core is 12.5% faster
This hole topic is playing around with the parallelism topic in computer science.
Till theirs a epic leap in real world memory speed {not BS PR effective memory speed jargon} all that's happing is the cpu cores are runing in idle mode if they all light up all at once and the software used has to be setup for 8 cores as well the software has to be Optimized for that kind of a SMP computer setup.
Most games are not last i checked.
Long story sort intel i5 2500k,though i wouldn't mind having a 8 core on my hands to mess with just for testing it my self to see how much efficiency drops as i light up each core progressively.
Bin a wile since i looked up this topic and im shore its gotten better but still theirs limits to what you can do with a smp computer setup when everything is plugged in to the same memory bank.