I have the following Configuration: Case: RAIDMAX SAMURAI 908 ATX CASE 5X5.25 2X3.5 3X3.5INT PAINT GLOSSY FINISH RED Power Supply: Antec True Power II 550W EPS12V 24PIN SLI Ready Power Supply W/ 120MM Fan Motherboard: DFI LANParty UT CFX3200-DR RD580 Crossfire S939 DDR 2PCI-E16 3PCI SATA2 Sound 2GBLAN Motherboard CPU: AMD Athlon 64 3800+ Processor S939 Venice 2.4GHZ 512K L2 Cache 90NM Cooling: Arctic Cooling Silencer 64 Ultra AMD S754/S939/S940 Aluminum 2300RPM 42CFM 12-23DBA Hard Drive: Western Digital Caviar SE16 250GB SATA2 7200RPM 16MB 8.9MS Hard Drive 3 Year MFR Warranty DVD: Samsung SH-W162 16X DVD+-RW 5X Dual Layer DVD Writer Black /W SW OEM RAM: OCZ Performance PC3200 2GB 2X1GB DDR400 CL3-3-3-8 184PIN DIMM Dual Channel Memory Kit W/ Ramsink Video Card 1: ATI Radeon X1900 Crossfire 512MB GDDR3 PCI-E Video Card Video Card 2: ATI Radeon X1900XT 625MHZ 512MB 256BIT 1.45GHZ GDDR3 PCI-E Dual DVI-I VIVO HDTV Video Card Now onto the Problem: I click on the fancy button "ENABLE CROSSFIRE" then Run 3D MARK 06 - I get only a near 4000 score. Flustered I disable crossfire and get near the same score. So i was frustrated so I took out the crossfire edition card and ran 3d mark on JUST the X1900 Single card without any crossfire. I scored HIGHER by about 10 points. then put in ONLY the crossfire edition card and Ran it again and got again around 4000 score. yes the drivers have been reinstalled I am using the latest 6.6 Catalyst drivers I am sure everything is installed correctly Any ideas?