Upgrade from Q8400 to Xeon E5620. Worth the upgrade (gaming, editing and overall)?

User430

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Jan 8, 2016
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Hello. Any opinions, suggestions or help would be greatly appreciated! Thanks.

Currently working with a Core 2 Quad Q8400 (8gb DDR3) that's bottle-necking my EVGA GTX 780 FTW GPU. I'm not an avid gamer, it's more of a media desktop. Always on, mainly streaming through the network and some audio/video editing. I rarely game, but would like to be able to on occasion (like Fallout 4, which doesn't work due to the CPU).

A co-worker offered to sell me his Xeon E5620 and the Intel DX58SO for socket 1366 CPU's, as well as his 8GB DDR3 memory for $120 USD.

Since I'm unfamiliar with Xeon CPU's, is it worth upgrading? Is it enough to notice a difference? I heard the E5620 is just like the i7 920, but not as great for gaming. I'm hoping it will still do better than the current setup, but worried it may be closer to my Q8400 than the i7 920...
And what will I lose out going with a Xeon instead of an i5/i7?



FYI: The Intel site doesn't list the Xeon CPU as compatible, but it definitely is. I also figure if it doesn't work out, the motherboard will allow me to go purchase an i7 instead.

Intel Xeon E5620: 12M L3 Cache, 2.40 GHz, 5.86 GT/s Intel® QPI
Intel Core 2 Quad Q8400: 4M L2 Cache, 2.66 GHz, 1333 MHz FSB

Link to the motherboard specs



UPDATE: I am given the choice to get a Intel DH67GD mobo, and a i5 2500k for about the same price. Should I just do that instead?
 
Solution
The i5-2500K is by far the best solution of those you presented. I think both of those other choices would continue to bottleneck the GTX 780.