Hi all,
Just decided to register on the forums because, although I have been aware of bitcoins for a while, only recently did I make a high end computer. The computer was not built with mining in mind and therefore it is a good all rounder rather than being graphics processing heavy.
The specs are as follows (as of yet nothing is over-clocked):
750
i7 2600k processor
asus p8z68-v pro mobo
2gb 6950 graphics card (potentially can be unlocked to 6970?)
16gb 1600mhz ram (ddr3 being at an all time price low)
3 * 1TB hard drives in RAID
1* Agility 3 120GB SSD
OCZ 850W  80+ GOLD RATED PSU
extensive air cooling

Is it worth mining with this rig, or investing in another 6950 in crossfire and mining, or would the power consumption be too high and negate significant profit.

Any help with really be appreciated,
Thanks