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Q8400 @ stock GHz or Q6600 OC'ed?

post #1 of 26
Thread Starter 
Hey Guys, my motherboard only supports a FSB of 1333MHz (the standard FSB for the Q8400) so overclocking the Q8400 would be a bit risky as I don't wan't to ruin my motherboard (not to mention that I have heard that the Q8*** series can be a very fiddly CPUs to over clock anyway... ) The Q6600, however, has a FSB speed of 1066 MHz, leaving a bit of room for OC'ing the Q6600 up to 2997MHz to (more or less) reach the 1333MHz FSB barrier.

The thing is though, the Q6600 is almost five years old now and is based on the 65nm manufacturing process which would make it slightly slower clock for clock compared to the 45nm Q8400, apart from that the Q6600 has 8MB of L2 cache, double that of the Q8400 which should make it faster in some CPU heavy applications, such as gaming (it's primary use). So does the extra in cache make up for the 65nm die? Is it worth buying an older CPU over the Q8400?
Thanks in advance, Warweo

EDIT: My Motherboard is a budget Asus P5G41TML-X, (my sig rig)
Edited by Warweo - 8/11/11 at 1:56pm
 
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post #2 of 26
Thread Starter 
Just had another thought, is my 400watt PSU enough to power a Q series and my heavily OC'ed GTS450? The PSU is a jeantech...
 
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post #3 of 26
Q8400 will not make you happy, i had a q9400 and they are honestly pretty crippled by the tiny cache.Even overclocked to 3.8 it wasn't very quick.
    
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post #4 of 26
Thread Starter 
Thanks for replying adzsask. The low cache was one of my main concerns about the Q8400, but is it really worth buying a 5 year old 65nm cpu?
 
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post #5 of 26
While the Core 2 Quad Q6600 isn't my opinion of an ideal LGA 775 quad core chip, I'd take it over a Core 2 Quad Q8400 because it will be 3GHz vs 2.66GHz in your case (so even being slower clock for clock, it'll be a bit faster), plus it has a smaller cache. Were it stock vs stock, it might be a bit closer.

Is it worth it? That depends. I wouldn't buy one to replace my CPU, that's for sure. At that point, I'm looking at instead replacing the platform outright.
Edited by Princess Garnet - 8/11/11 at 2:14pm
post #6 of 26
I would get the Q6600 over the Q8400. The Q6600 is older but it's still a beast. I would definitely overclock it more.

Looking at your board, you can go past 1333MHz by adjusting your FSB. It doesn't have enough power phases to break records but I'm sure it can be decent.
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post #7 of 26
I would never be convinced to buy another 775 or 1336 chip. The 775 higher end Core2Quads are just hilariously overpriced, and the 1336's are a dead end platform and are dying breeds in and of themselves....
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post #8 of 26
Quote:
Originally Posted by coachmark2 View Post
I would never be convinced to buy another 775 or 1336 chip. The 775 higher end Core2Quads are just hilariously overpriced, and the 1336's are a dead end platform and are dying breeds in and of themselves....
^ WUUUUT? is this a joke? 1366 is a dead end? why is 1366 chip still top of the stack then please tell me this, and moving from a 1366 i7 to an 1155 i7 is just stupid the difference is not ever going to be noticed unless your a 3D animator or game developer.
Edited by adzsask - 8/11/11 at 2:28pm
    
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post #9 of 26
Thread Starter 
Please can we get back on topic?
 
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Dell Vostro 3300
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40Gb @ 17Mb/s 2x DVD Burner Windows XP Home Edition x86 16" CRT 
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post #10 of 26
Get the Q6600, more cache and you can overclock it higher. Going from 65nm to 45nm is not much faster in the die shrink itself.
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