Need Help: Need a great computer to run FSX

I have FSX and until now i have been running it on a desktop that always crashes. Today for the first time it crashed every second and also the cockpit went purple and black. I've decided that i want and need a new computer but i dont really understand computers..

So today i searched the web and came across a Alienware X51 Gaming Desktop:

4th Generation Intel® Core™ i7 Processor

Windows 7 Professional

16GB Dual Channel DDR3 at 1600Mhz

AMD Radeonâ„¢ R9 270 with 2GB GDDR5.

1TB SATA 6Gb/s (7,200RPM) 64MB Cache

I dont really know what everything here means so:

CAN THIS COMPUTER RUN FSX AMAZINGLY AND ALSO RUN AMAZINGLY AFTER I DOWNLOAD A LOT OF ADD ONS?

Thanks :)

...CAN THIS COMPUTER RUN FSX AMAZINGLY AND ALSO RUN AMAZINGLY AFTER I DOWNLOAD A LOT OF ADD ONS?

Amazingly? Probably not.

One of the main issues with Dell/Alienware is: unless you pop for a top shelf rig and have it custom made to your specs, you end up with a locked processor, cheap memory, and a generic hard drive.

Because FSX is CPU hungry you'll want speed, and that comes with overclocking.

Overclocking requires a "K" suffix CPU ie: i7-4790K. Rare in an Alienware rig.

I don't know what your budget is, but, from that X51 description I assume(I hate to) it's north of $1400.

These sites have Budget Gaming Laptops and Customizeable Desktops:

http://www.cyberpowerpc.com/category/configurator/

http://www.ibuypower.com/ibppages/CustConfig.aspx

http://www.xoticpc.com/index.html

Of the three, CyberPowerPC has the brodest range of options.

This should run on par with the X51 top dog: http://www.cyberpowerpc.com/system/PBET130/ but, I suggest the Z97 Configurator with an i7-4790K, 16GB of the fastest RAM your budget allows, and a GTX 760(minimum).

Overclocked(extreme), that rig should run with the big dogs...Don