I was struggling to keep cool without a horrible Delta. My AXIA 1000@1458MHz and 2.01v was hitting 50c lately, after hours of Prime95, but still stable. Bought a Millenium Glaciator for $23 shipped form their website (version 1). I have now moved my cpu voltage up to 2.09v and am stable at 1503MHz, 46c under full load.
