so, i got to choose between i5 3570S($240), i5 3570($260) and i5 3570k ($280), and i really can`t decide which one of them to buy... What would be the difference (frames per second) in games between the 3570S and 3570? And is the 3570k really worth the money, or should i invest those extra bucks in a new GPU? How much more FPS would i get over the 3570S (3.1 ghz) if i bought a 3570k and OC`d it to about 4.2 ghz..?
Price / Performance, the i5-3750k is better because it can be overclocked. If you are not going to overclock, then the i5-3750 is cheaper.
The i5-3570S has a lower clockspeed and consumes a little less power than the it-3570. I think it has a 70w TDP vs 77w TDP.
The increase in performance regarding games depends on if the game is dependent on the CPU. For example, Crysis 2 does not care how fast the CPU is as long as it is fast enough. Benchmarks have shown that the performance difference in Crysis 2 between a Core i3-2100 and a Core i5-2500k @ 4.5GHz is 1 extra frame. However, in games that are dependent on the CPU like Skyrim, the increase in performance between the i3-2100 and the OC'ed i5-2500k is very noticeable.
The i5-3570K is potentially the most powerful of the 3 processors as it is the only one that can be overclocked above it's stock speeds. As to what difference it makes to your system, if any, depends on what else is in your system. So, once again, what do have just now?
i5-3570k will only be the best option IF:
- You got a decent cooler, so the CPU won't overheat and potentionally hurt your hardware when overclocked.
- If you got a MOBO that allows great overclocking which is a Z77.
- If you're sure you a PSU that can handle the higher power consumption.
If you don't got one of the above, then the i5-3570 with a stock cooler would be your best option. With the i5-3570 you don't need any expensive MOBO or any expensive aftermarket cooler. So I believe you actually get the best value with the i5-3570 and a cheap B75 or a H77 MOBO.
The i5-3570 can handle just about any GPU on the market right now in gaming, so you won't encounter any major bottlenecking.