Thermalright VRM-R3 vga memory cooler , air flow through side panel chassis fan - copper base + aluminum fin , 2x6mm copper heatpipes ; fanless design ; support optional 80mm fan , 140g , support upto ATi HD5850/5870 ; compatible with HR-03 Rev.A / HR-03 GT / V2 / T-Rad2 / T-Rad2 GTX