CorsairCooper Posted February 21, 2008 Share Posted February 21, 2008 Hey Guys I have the DRAM frequency set to DDR 1066 in the bios - however when I run Cpuz the ram shows as pc 6400 - Am I missing something? Ram says its v3.1 Thanks Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 Are you looking at the CPU-Z Memory tab or the SPD tab? Link to comment Share on other sites More sharing options...
CorsairCooper Posted February 21, 2008 Author Share Posted February 21, 2008 Under the SPD tab it says PC2-6400 (400 MHz) Under Memory tab under timings it says Dram Freq - 534.5 MHz FSB:Dram - 1:2 5 5 5 18 2t Thanks so much for responding! Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 You are very welcome. It looks like you are at the right speed! Link to comment Share on other sites More sharing options...
CorsairCooper Posted February 21, 2008 Author Share Posted February 21, 2008 so then my machines ram is running at 1066mhz? Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 so then my machines ram is running at 1066mhz? Technically no, it's running at DDR1069 or 534.5mhz. DDR memory means it transfers memory 2 times per clock cycle hence the name Dual Data Rate. So, PC8500or DDR1066 memory actually runs at 533mhz. Your boards seems to be OCing the memory by 1.5mhz so you are getting 534.5mhz or DDR1069. You are running at the right speed. Link to comment Share on other sites More sharing options...
CorsairCooper Posted February 21, 2008 Author Share Posted February 21, 2008 I just wanna say thanks and I appreicate your help. Also Corsair is awesome love the ram and psu!!! Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 I just wanna say thanks and I appreicate your help. Also Corsair is awesome love the ram and psu!!! You are very welcome and thanks for taking time to post the feedback. I'll email a link to my boss at raise time. :D: Link to comment Share on other sites More sharing options...
dlkit Posted March 19, 2008 Share Posted March 19, 2008 I see someting similar when I run CPU-Z V1.43, but according to SPD the 5-5-5-18-2T @1.8v settings are for 400. The 533.3 settings are 5-5-5-15-2T @2.2v. How can the memory speed be 533.3 using 400 settings? Unfortunately CPU-Z doesn't report the memory voltage. I have my Asus P5K Delux BIOS 0705 running everything in "Auto" since entering any timings manually will not allow the machine to POST. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 19, 2008 Corsair Employees Share Posted March 19, 2008 The SPD is set to the defaults values for the IC's we use and with that MB you would need to set the tested settings (IE Timings and Voltage) manually. Link to comment Share on other sites More sharing options...
dlkit Posted March 20, 2008 Share Posted March 20, 2008 Thanks Ram Guy. Maybe I didn't make myself clear. I'm asking why CPU-Z reports memory speed @533.3 when it's obviously using the default SPD settings? Why doesn't it report 400 as the speed also? And , like I said, if I set the timings manually, NO POST, or at the very best a few minutes or days before no POST. I have seen CPU-Z report the 533.3 timinings when it actually runs under manual settings. Thanks again. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 20, 2008 Corsair Employees Share Posted March 20, 2008 You would need to ask the maker of CPU-Z for a reason why, but it is showing the clock frequency not the DDR frequency IE DDR2-800 runs at 400 MHz and because it is double data rate it would be 400MHZ x 2 = DDR800 or 533 MHz X 2 =DDR1066. And I have already explained the SPD. Link to comment Share on other sites More sharing options...
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