It's better than the stock cooling - Much better in your case because I believe they use a thermal pad on your R9500. But the heatsink is relatively small and doesn't have a particularly powerfull fan. But it is all copper which is a nice upgrade over the stock aluminum cooler. It should be more good enough for running at 9700 speeds. I have one and it was good enough for a 9800 Pro to OC an ok amount with. An Arctic Cooling Vga Silencer, rev. 3 or earlier, is better than this though for about the same price.
You might try mounting a more powerfull 50 or 60mm fan if you do get one. I've been thinking of dusting off the Iceberq and trying out a 7000rpm 60x38 Delta fan on it to see how it performs.