BlancMange

Cheers for the replies guys.... greatly helped. ok, ive had a play around in bios, but really, i cant get both sets to work at the same time... so ive decided that im selling these modules and am going to buy a 2gb kit (2x 1gb modules) does anyone have any recommendations as to what i should buy (im in Australia, so something which can be easily sourced)

bought it at a LAN, person upgraded their pc there, and said that the board had no issues. i noticed that the bios needed upgrading, and upgraded the bios afterwards as well. so what your saying, is the following: bootup into bios set the looser timings (in this case, it will be from the CMX512-4000XLPRO sticks) disable CPC and then i should be able to run all four sticks, making a total of 2gb of ram?

board is used, but i reset the bios before i installed everything. FYI i am currently using it, but only got one set of the memory in.

Hi, ive recently acquired a LP UT RDX200 CF-DR mainboard, and am having a few problems with memory. heres my current scenario: AMD Opteron 170 running @ stock XFX 7600gt PCIe Hiper Type-M 580w PSU 2x Corsair CMX512-3200XLPRO (512MB, 400MHz, 2.2.2.5) 2x Corsair CMX512-4000XLPRO (512MB, 500MHz, 3.4.4.8) I am currently running the following ram sticks: 2x Corsair CMX512-4000XLPRO (512MB, 500MHz, 3.4.4.8) In Dual Channel on the orange slots (will not run dual channel in yellow slots) whenever i try to run the CMX512-3200XLPRO sticks, i can only run them in single channel, without the other set. as soon as i try to run the CMX512-3200XLPRO sticks in dual channel on either orange or yellow DIMM slots, i get 3 red diagnostic LED's and stays there. My previous mainboard ran all 4 memory modules simultaneously fine, without me having to adjust any settings. are there any specific settings for the ram i have to adjust in the bios to get both kits working at the same time. i know that it is two completely different kits of memory, running at different speeds and timings, but is there anyway at all that i can fix this problem? any help would be great.