Drenlin
Active Member
With most processors, you look at which one will give you the best performance for the price, though there are some exceptions. In the case of the Athlon II X3 models, the 445 is the better deal, because it's a C3 stepping model, even though it's only faster by .1GHz. (a newer stepping is kind of like a newer revision to the design)
I should probably note that GHz(AKA the clock speed) only matters between processors of the same architecture. In AMD's case, the Athlon II and Phenom II use the same architecture, but the Phenom II line has an L3 cache, so clock for clock, it's actually faster than the Athlon II line. (caches in a processor function kind of like RAM. They hold commonly-used data so that it's already available when the CPU needs it. This cuts down on wait time, which enables the CPU to do do work more efficiently)
In the case of AMD vs Intel, the new Intels are actually quite a bit faster clock-for-clock. An Intel i5 750, which is their cheapest quad core, is $200, but it is also a heck of a lot faster than an Athlon II x4 running at the same clock speed, and even a bit faster than a Phenom II x4. AMD makes up for it, though, because they have a 6-core Phenom II at roughly the same price.
I should probably note that GHz(AKA the clock speed) only matters between processors of the same architecture. In AMD's case, the Athlon II and Phenom II use the same architecture, but the Phenom II line has an L3 cache, so clock for clock, it's actually faster than the Athlon II line. (caches in a processor function kind of like RAM. They hold commonly-used data so that it's already available when the CPU needs it. This cuts down on wait time, which enables the CPU to do do work more efficiently)
In the case of AMD vs Intel, the new Intels are actually quite a bit faster clock-for-clock. An Intel i5 750, which is their cheapest quad core, is $200, but it is also a heck of a lot faster than an Athlon II x4 running at the same clock speed, and even a bit faster than a Phenom II x4. AMD makes up for it, though, because they have a 6-core Phenom II at roughly the same price.