I want to buy a fx-8150 for my thesis.is it suitable?
 

i need a powerful computer for my thesis to end.i want to buy it in a few days ahead.i have read other threads but i didn't reach a summation to decide.
Is fx-8150 cpu faster than expensive corei7 ones?
Im using openfoam and my case is comressible,transient and turbulent.is it a good decision?
Thanks for guide.

I have an FX8150 (amongst other bits of hardware), so can probably comment meaningfully. The FX8150 is not a competitor to the Core i7. The i7 is faster, but more importantly from a CFD point of view, uses 4 parallel memory channels, versus the two channels that the FX8150 uses. FX8150 is more of a competitor to the Core i5, which uses the same level of memory system. The FX8150 has more cores, but not enough memory performance to gain a CFD performance advantage from. The FX8120 is just as fast (because of the memory limitation), and cheaper, so rather go with that, or an i5. I have the 8150 and i5, with similar memory systems, and the OpenFOAM performance is similar between the two.

thanks.I finally bought a fx-4170.I haven't compare it accurately but its good except for high noise of its fan.it has 4 copper tubes but its fan has a lot of sound.I set "smart fan control"(or such expression) in BIOS so that temperature of CPU be 55C degree.is this temperature suitable for CPU or its better to buy a better cooler than its original.

Get something better. Sealed circuit liquid cooling seems to work well. I have a Corsair Hydro H80, and it has been very satisfactory, very quiet. It took a bit of tweaking to find somewhere to fit the radiator though, it is large! Which is why it works, of course ...

There's no need to get something as expensive as an H80! You can get something half the price in pure air cooling and roughly the same noise level.
The H80 would only be properly useful if you were to do some serious overclocking to the CPU! ;)
Of course the overclock will possibly double your electric bill and risk reducing the lifetime of the CPU, but hey... more CPU power needs more electric power :D

If 55ºC is the very maximum temperature you're getting, it seems fine... Although the documented nominal limit is 61.1ºC: http://products.amd.com/en-us/Deskto...il.aspx?id=786 - I can only expect that it should be able to handle 65-70ºC, at the risk of loosing life time...