cptmike Posted March 14, 2006 Posted March 14, 2006 Hello. I'm new to this forum, having only just purchased my mother board and kit to slot in it. I have started my first footsteps into overclocking being a total noobie to it all. I have been getting help from a forum at the Micro mart website links below. http://forum.micromart.co.uk/Topic95517-29-1.aspx and http://forum.micromart.co.uk/Topic94552-29-1.aspx I have decided to ask if anybody has noticed any issues with RAM clocks in memtest. I have noticed that when I increase my fsb and then post into memtest my RAM frequencies are not the same. This is despite selecting a 1:1 ratio and also selecting auto to see if that helps. I have noticed that the RAM frequency falls short of my fsb frequency by approx 8%. A mini table refers to the results that memtest tells me when I load into it. FSB......Mem frq 220......204 235......218 243......225 Since I have noticed the 8% anomaly I have managed to calculate the fsb to give me the mem frequency I desire. I just wonder if anyone knows how I can sort this out or why it may be happening? Incidently the memory is 2x 1gb sticks of ocz platinum (2,3,2,5). Also I've noticed that cpu-z tells me my cpu is at 2009mhz despite a fsb 0f 200 and a cpu multiplier of 10 (opteron 146). If anyone can help :confused:Strange memory issues Quote Share this post Link to post Share on other sites More sharing options...
Sorrento Posted March 14, 2006 Posted March 14, 2006 If your RAM modules are the CL2 3 2 5 ones, try these settings: http://www.dfi-street.com/forum/showthread.php?t=31737 If you leave anything on auto then perhaps thats why there is a diference between CPU frequency and RAM frequency: the system is using a cpu/ram divider with you not knowing anything about it. The 2009 mhz issue is because with the 200 x 10, the 200 isn't an Integer number... it is actually 199.99 or 200.66 or something like that. There is nothing to worry about, and perhaps it would be an interesting research reading I hope this helps, good luck Quote Share this post Link to post Share on other sites More sharing options...
Peanya Posted March 14, 2006 Posted March 14, 2006 That's happening because you probably have your CPU set to a half multiplier. The AMD64 doesn't use ANY half step multipliers - it takes a 10.5, for example, and uses either 10 or 11 and the HTT (what you call FSB) and adjusts it to get the CPU speed. EDIT: Set your multiplier to 10, not auto or 9.5 Quote Share this post Link to post Share on other sites More sharing options...
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