Good question to our admin.
I would give you the tip, that today you cant compare cpu's anymore by Mhz or Mb of Cache.
Only good camprasion is a benchmark. It is not an absolute value but a very useful starting point.
(usually the value can differ a bit, because speed depends on your Motherboard and Ram Speed, most values are correct)
I like the site of passmark because you can compare really old CPU's and GPU's with the top ones of today.
Theay Serve different Lists so you can search the way which fits your needs best.:
here you can search by name:
Also interesting the GPU section:
Also your question is many cores vs. many Hz, should be better asked many cores versus high performance per core.
I would prefer less cores but with more power per core. On of the best Dual Core CPUs is the Intel i3-3220.
This CPU has 4239 Passmark points - 2119 per Core.
Nearly the same priceclass you find the AMD Phenom II X6 1045T with 4,921 Passmark points - 820 per core.
So the AMD can ONLY win the CPU Battle IF all cores are used by the Software.
If the Software only uses 1, 2 or 4 Cores as limitation. well then...
So I would prefer less cores but with more power per core , so you are on the safe side.
Look at different cpu's which fit in your budget, and then decide.
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