I got this reply from Geil.
Dear Richard,
We use the same IC and modules on GA-890FXA-UD7 (F4) with the DRAM voltage we mentioned
(1.610V) without any questions. If you still have any problems with the modules, we would like to give
you an RMA no. and replace the whole kit.
Thank you.
Regards,
PRODUCT & TECH-SUPPORT CENTER
TEL (886) 2 8227 3260 | FAX (886) 2 8227 3252
16F, NO.268 Lian Cheng Rd., Chung-Ho City, Taipei 235,Taiwan
www.geil.com.tw | www.geil.com.cn
Sent from Taipei, Taiwan
Incidentally, even the A-DATA AX3U1600GB2G9-2G which is on the list of compatible memory has the same problem with slots 3 & 4. The GeIL Black Dragon l GB38GB1600C9QC actually posts with three sticks in slots 1,2,3 using the F4 bios. I tried F5b yesterday but this beta bios will only work with slots 1 & 2 in dual channel or slots 2 & 4 in single channel. I will increase the speed of the memory to 1866MHz and use a voltage of 1.6v later. Thanks for the suggestions.