Will an FX-4100 bottleneck a HD 7850 2gb? Overclock necessary?

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I've been meaning to upgrade from my old HD 4850 to something in the range of a 7850 2GB but Im almost sure that my FX-4100 will be a bottleneck. To fix the problem I was wondering to do a small multiplier overclock to the FX-4100, but I'm not sure how much of an overclock I would need to make the 4100 up to par with a 7850 and will it require an aftermarket heatsink/fan?

I was thinking I would up the multiplier to get something around 4Ghz and maybe higher the core voltage to 1.000V? I'm still a newbie at OC'ing and Im not very familiar with fsb overclocks but I will look into it if its necessary.

System specs:

Motherboard: Gigabyte M68MT-S2
CPU: AMD FX-4100 3.6ghz (stock fan)
GPU: HD-4850
RAM: 1x4 DDR3 1333Mhz
PSU: Crusade 750W Dual-Rail High Efficiency '80 Plus' Power Supply

I only really play games, such as Bioshock infinite, Dues Ex Human Revolution, Batman Arkham City, Portal 2, Planetside 2, Witcher 2, Fallout New Vegas etc. I want to play these games in 1920x 1080 at medium/high settings if possible. When I upgrade my GPU Ill be getting another 4GB of ram.
In a 3 hour prime95 Blend torture test I get 51c average at 3.6Ghz with stock fan.

Any help will be appreciated.
 

Lazermonkey

Honorable
Mar 28, 2013
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10,510
Get an aftermarket cooler like the Cooler Master Hyper 212+ and you can OC pretty good with that chip.

I have the FX-4130 and am running stable at 4.3 as opposed to 3.8 stock and my temps with that cooler are maxing at 51c running Prime95 torture test.

I also have five case fans, so, airflow is pretty good.

If you have a decent flowing case. Then you should be able to OC with that cooler and have decent temps.

I hope this helps? :)