Do a 600 watt 140mm non modular mATX PSU exsist?

Your case supports a standard ATX psu, don't have to look for a mATX unit and don't need 600 watts to support a single 6870
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Yeach great for delluser , Anteq earthwat 500 is very cheap and high efficien

The PSU is in a Qx-2000 mATX cube case & beauce of the design of the case & the physical demensions of the PSU the HDD cage will not fit where it's suppose to go. Check out the link below for specs on my case as to gain a better understanding of my problem.

http://www.aerocool.us/pgs/pgs-q/qx2000.htm

Just for your information here are the system requirements for the HD 6870 straight from the manufacter site:

http://www.hisdigital.com/un/product2-574.shtml

•PCI Express ® based PC is required with one X16 lane graphics slot with 2 slots space available on the motherboard
•500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for AMD CrossFireX™ technology in dual mode)
•Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
•Minimum 1GB of system memory
•Installation software requires CD-ROM drive, a keyboard, a mouse, and a display
•DVD playback requires DVD drive and a DVD
•Blu-ray™ playback requires Blu-ray drive and a Blu-ray disc
•For an AMD CrossFireX™ system, a second AMD Radeon™ HD 6800 Series Graphics card, an AMD CrossFireX™ Ready motherboard and one AMD CrossFireX™ Bridge Interconnect cable is required

I never trust the minimum requirements & at least I know my system can handle anything I throw at it