Hmm, well, I'd say go for the 6870. In the future your parents may approve a new monitor, which the 6870 will be better prepared for than a 5770. That's my revised suggestion.
thankx that's what i was thinking just needed some backup
but the radeon hd 6870 do have some heat probs isnt that rite?
and what abt its idle and load power consumption?
is it really a good value for money?