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I5 2500k or pay more for i5 3570k

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August 3, 2012 12:29:40 AM

i have a asrock z77 extreme4 mobo, my friend selling an i5 2500k sealed for 170. I heard the new ivy 3570k is faster for gaming combine with pcie 3.0 support from the mobo, since i have the msi 7950 graphic card so i guess it'll run faster. I really don't know which cpu to get , any help would be great. So get the i5 2500k sealed for 170 or pay more for the i5 3570k ? thank you

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August 3, 2012 1:26:37 AM

Search for some gaming reviews using the 3570. Chances are the 2500 will be there for comparison. http://www.bit-tech.net/hardware/cpus/2012/05/01/intel-...

From the few I've seen, the 3570 is slightly faster, but the difference is so small that it really isn't important. Then there's O/Cing... Which one will O/C best? I don't know. But the 2500 runs cooler.
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August 3, 2012 2:00:13 AM

go for the 2500k if you get a 212 cpu cooling fan you will still be under the price of the 3570k and will be able to OC to at least 4.5 ghz
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August 3, 2012 6:41:40 AM

I summise it like this, why go back to older technology even if only marginally older if there is no valid reason too? In that the answer is simple get yourself a Z77 with IB chip and you are up to date and have all the benefits of concurrent Intel technology.
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August 3, 2012 7:20:15 AM

Generally speaking, Ivy Bridge is only about 5% more powerful on average than Sandy Bridge assuming the same clock speed. While PCI-e 3.0 is the new standard, the reality is that no current cards will need more bandwidth than PCI-e 2.0 can provide. This will likely be the case for the next two generation of cards from AMD / nVidia. Perhaps three generations from now the Radeon "HD 10xxx series" and the GeForce "GTX 9xx series" graphic cards can use more bandwidth than what PCI-e 2.0 can provide, but likely only for the $400+ cards in those series. Just a guess...

If you are the type of person who does not buy the higher end $400+ graphics card then you should be fine with the i5-2500k. If you want something like the "GTX 970" when it is released, then I would go with the i5-3570k since it supports PCI-e 3.0.

In terms of overclocking... OC clock speeds varies from chip to chip. The i5-3570k can be OC'ed to 4.5GHz, but it appears people recommend not keeping permanently at 4.5GHz. The i5-2500k can be OC'ed up to 4.8GHz in general, I've seen posts where people have gotten it up to 5.0GHz. Since Ivy Bridge CPUs are on average 5% more powerful than Sandy Bridge CPUs an i5-3570k OC'ed to 4.5GHz (again not recommended for extended periods of time based on various posts) would be equivalent to an i5-2500k OC'ed to 4.725GHz.

Is saving $60 - $70 worth going with the older i5-2500k? That depends on what matters to you based on the above information I've provided.
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August 3, 2012 8:07:15 AM

The way i see it is like this i5-3570k is about 5% more powerful than Sandy Bridge i5-2500k where ever your buying if the i5-3570k cost $20.00 more it's NOT worth it if it only cost $10.00 more than it's worth considering anyway just my two cents lol.
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August 3, 2012 8:17:43 AM

Wait so you can get i5-2500k brand new still sealed in box for $170 if that is the case buy it well worth it you don't need ivy it's honestly not all that i should know since i own both sandy and ivy trust me for $170 you be a fool to pass on that.
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August 3, 2012 8:31:34 AM

If you already have a SB the jump is not really worth it unless you want the features, but he doesn't have one so he may as well go straight to IB.
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August 3, 2012 8:48:45 AM

sarinaide said:
If you already have a SB the jump is not really worth it unless you want the features, but he doesn't have one so he may as well go straight to IB.
I would agree except he says he can get a brand new still sealed in the box i5-2500k for $170.00 unless he can get ivy for near same price ivy is not worth paying $229.99 for i5-3570k if you can get a i5-2500k for $170 ;) 
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August 3, 2012 2:30:18 PM

For gamers the Ivy Bridge is not worth a penny more than the Sandy Bridge.

For general productivity, it might be worth $10 more... But even that I hold questionable.

PCI 3.0 does not have a gainful advantage over 2.0 at this time.
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