KT3 Ultra2/AMD/RAM problems.

Question

Okay, this is my first time taking it to a forum for help, so dont let me down guys.
Im a tech at DrComputers in Oklahoma, right now Im stumped with a problem that I have seen twice. It all has to deal with the Kt3 Ultra2 board, 2000+ or 2200+ AMD XP, and Samsung 512 2700 ddr sticks.
Here is the lay out, the board is ground mounted, meaning no case and a rubber/foam layer below it, CPU has a large heatsink on it, more then it needs. There are no other devices attached to it other then a vid card, no hdd's, no fd's, no cdroms.  As for the RAM, I have two sticks of 512 of Samsung 2700.
It will not hold a host clock speed of 133, but it stays fine at 100. I have changed the DRAM timing as shown.
 SDR timing by                  User
  Sdram frequency            HCLK+33
   sdram case latency       2
   Row Precharge time     2t
   RAS Pulse Width           5t
   RAS to CAS delay          3t
   SDRAM band interleave 4 way
   SDram burst lenght       4 qw
   SDRAM 1t command       Enabled
   Fast Command              Ultra
I have changed those values to the other ones, and it wont hold the memory nor the CPU posted speed. All it will tell me is 512 megs and 1500+ XP.
And I have flashed the BIOS.
Thank you if you can help me, I just need it that bad.

Answer 1

umm...i have my KT3 ultra w running at Ultra +HCLK+33 and max mem timings...you should put your foot back in your mouth :]
Quote
Originally posted by modelt
This board will probably not function with timing set to ULTRA and memory function set to HCLK+33.  This equates to very aggressive timings that most memory cannot run.   Set timing to FAST and memory to HCLK.  
HCLK+33 sets memory bus to 166 MHz (DDR333) but the bus between the CPU and memory controller is still at 133 MHz.  From what I have read and talking to other users the HCLK+33 only gives at most 3 to 7 % increase in memory benchmarks but most do not notice any increase in normal programs or games.