E4300=E6300 or E4400=E6400 in Performance?

[JCNiest5]

Okay, when it comes to pure speed alone, minus the little Mhz difference between the two series, are they pretty much neck and neck with each other?

 

[Xilikon]

The E4xxx will be a few percents slower due to the slower FSB (800 vs 1066).

 

[markintosh13]

http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2903

At stock it's a hair slower than an e6300, overclocked it's similar to an 6800

 

[arentol]

If you are running entirely at stock settings, and you have already allowed for the MHz difference, then Xilikon is correct, the only real difference is the FSB, which does have a small impact on performance in some apps.

If you are planning/willing to overclock, then the most relevant difference becomes the CPU clock multipliers...

E4400 = 10x
E4300 = 9x
E6400 = 8x
E6300 = 7x

So the E4400 is actually the easiest to overclock while the E6300 is the hardest by far.