Difference between Core 2 Duo E8400 and Core 2 Quad Q9400

So I would like to ask what is the difference between Core 2 Duo E8400 and Core 2 Quad Q9400 and thus which is better and why? Thank you.
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More about difference core e8400 core quad q9400
  1. The difference is pretty obvious. For one, the Q9400 is quad core and thus will perform better at multi tasking and any game that utilizes quad core technology (most new ones). The E8400 however is a dual core, and it uses a little less power. I would say that the E8400 might be a bit more powerful in individual program processing and should be a bit better at overclocking. Going with a quad core will be advantageous in the future.

    Personally, I have the Q9550 Core-2-Quad and it does very well with everything I throw at it.
  2. get more cores, the diff is 2 cores 30watts and 340mhz, get the 9400 its just better.
  3. Generally I'd say go with the quad. However. Owning a 8400 dual core... I can easily overclock it to 4gz on air with a $15 cooler. If you're looking to primarily game the 8400 is still a strong contender. Still waiting to see how much the 8400 bottlenecks when overclocked.
  4. E8400 has twice as much L2 per core and a 9 multiplier compared to the Q9400's 8. So, like they said the E8400 can OC with much less heat and has a higher overhead. The Q9400 is more like 2 E7200s stacked on top of each other, and will out perform the E8400 in anything that is more than dual core optimized. Nearly all games would probably show benefit from the higher clocks of the E8400, but quads are the future.
  5. Well I went from a e8500 to a q9400 and it is worth it everything just seems instant the q9400 is overclocked to 3.8 and has been that way for a little over a year nothing i can't do at all and very fast. At stock it would not be much for gaming I found this on accident when the power went out and my overclock reverted to stock 2.66 vs 3.8 is a big jump :) fun and easy to overclock worth it and lets you not have to buy another proc for at least a few more years ... At 3.8 it out benchies a I7 920 not that that caanot be overclocked to beat this as well but as a cheap quad it is easy and very versitile.

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