The recent release of the Radeon HD 7970 Ghz Edition is having knock-on benefits further down the stack. $20 has now been shaved off the regular 7970 rrp in addition to the last discount we reported, while the 7950 is down $50 to $349 and the 7870 has also been nudged $50 deeper into the mid-range sweet spot at $249. Other cards in the line-up may also drop by some degree, alth
