Assuming (i am just giving an example, i am sure it is definitely not true), a OC 7870 non reference card is just slightly slower than a non reference 7970 without OC, but the 7870 is much cheaper, are there any drawbacks using a highly factory OC card?
Sorry if im asking so many questions. These cards are really expensive and i wanna know more before making my decisions. Thanks nippon for your answers!
If I'm not wrong, an OC non-reference gpu is able to match the next level reference card speed or performance. For example, an OC 7850 PCS is at least able to match 7870 reference speed or performance.
Overclocking will consumes more power and produce more heat. This is the reason why non reference card is recommended for overclocking as they come with after market cooler to cool the graphic card better than reference card.
I agree that these high end cards are expensive and need to do more homework before you buy them.