3XS Nanu gamer - I7 overclock vs cooler

[bpmarshall]

Hi Scan,
I'm considering this system setup (see below), but am wondering if I ask for a better cooler if the overclock can be increased further, or the system will be more stable / durable? The machine is primarily for CAD and CFD work, but I want to be able to run the pheonix RC flight sim in 3d via a passive 3DTv which i understand is possible with the ATX card albeit still needing a bit of tweaking.

I'm expecting the CFD runs to be loading the processor at 100% for extended periods so if a better cooler will allow me to run faster for longer I'd be wiling t make the investment.

The smaller form factor is of benefit as it'll allow me to take the machine with me on buisness more easily.

Any thoughts greatfully recieved.

Best Regards
Barry M

System Overview

Case: Cooler Master Elite 120 Advanced Mini-ITX Case
Motherboard - Z87: Gigabyte GA-Z87N-WIFI Intel Z87 Chipset
CPU: Intel Core i7 4770K Haswell 3.5GHz Quad Core with HT 8MB Cache
CPU Coolers: Akasa K32 Performance CPU Cooler
Overclocking - CPU: Extreme - Upto 4GHz - Tuned to absolute safe maximum Performance prioritised over acoustics.
Memory: 16GB Total (2x8GB) Corsair Vengeance LP 1600MHz, 2 selected
ATI Graphics: 3GB XFX Radeon HD 7950 800MHz GPU 1792 Cores 5000MHz GDDR5
Power Supply Unit: 600W Corsair Gamer Series PSU 80PLUS Bronze
Solid State Drives: 120GB PNY XLR8 Read 500MB s Write 450MB s
Optical Drive 1 - DVD Blu Ray: LG 16x Blu-ray DVD Writer inc Playback Software
Operating system: Microsoft Windows 7 Home Premium 64bit - OEM
Software - DVD Blu Ray Decoding: *DVD Blu Ray Decoding Software Not Required*
Software - Security: Kaspersky Internet Security 2013 - 2PCs & 2 Android Devices
Extended Warranty - Mechanical hard drives only covered for 1st year.: 3 Year Warranty - 1st Year Onsite 2nd & 3rd Year Return to Base (Parts & Labour).

[bpmarshall]

OK I forgot a minor addendum, openfoam (CFD software) is a unix based or ubuntu application, so ideally I'd like to have a ubuntu duel boot rather than using virtualbox (www . openfoam.com/resources/windows.php[/url]) Will the Overclock hold for a ubuntu boot, or am i wasting my money going for it?

As before any thoughts greatfully recieved.
Barry M