I've recently picked up an XFX 5870, and fitted it with a Twin Turbo Pro. I've tested it out running Kombuster (Furmark) and Afterburner. I realize that furmark testing creates a crazy 'worst case scenario'... but does this temp seem a tad high to you for a stock card at such high fan speed? I would have been fine with high 60's under furmark, but I don't know...
(system in specs for those that haven't seen my thread)