moog Posted February 21, 2008 Share Posted February 21, 2008 Hi , i just bought 4GB of Twin2X2048-6400C4DHX , and i intend to run them together with a Intel Q6600 CPU . What would be the best memory settings , timings and voltage , in order to get a 1:1 Dram:FSB ratio ? Thank you . Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 The tested settings are here: http://www.corsair.com/_datasheets/TWIN2X2048-6400C4DHX.pdf If you want a 1:1 ratio, you will need to OC your CPU FSB speed to 400mhz. Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 I was thinking about setting the DRAM frequency to 533mhz , with right timings . Could that be ok ? If yes , which are the right latencies for TWIN2X2048-6400C4DHX , running at 533 MHz ? Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 I was thinking about setting the DRAM frequency to 533mhz , with right timings . Could that be ok ? If yes , which are the right latencies for TWIN2X2048-6400C4DHX , running at 533 MHz ?I don't think that memory is going to run that fast as that is a 133mhz OC. You are welcome to try it though. But, I don't think a BadAxe will run the memory that fast anyway. Your best OC is going to be 1:1 and there is no way that CPU is going to run a 533 FSB on that board. FSB 400 and DDR800 is going to be your most stable setting. If you can get that stable, then you can try OCing upwards from there. Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 All i want is the best stability for my system . I dont need extra performance , and i dont want to overclock anything . Im not an adept of overclocking . Memory i had before ( DDR2-667 ) ran with no problems at 533mhz and 3-4-4-8 . I thought maybe i can get something similar with the new memory . Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 Ive lowered the memory frequency from 800 mhz to 533 mhz , and kept the 4-4-4-12 latencies on 2.1 V . Everything is going fine , and CPU-Z shows me 1:1 DRAM:FSB ration . Would be ok to keep those values ? Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 DDR667 memory does not run at 533mhz. If you are running at DDR533 speed, your memory speed is 266mhz. But, it is called dual data rate memory as it transfers data 2 times per clock cycle for a rating DDR533. DDR667 runs at 333.33 mhz, DDR800 runs at 400mhz, etc. So, if you are setting the PC6400/DDR800 memory to run DDR533, then you will be underclocking it by 266mhz. Your Q6600 CPU runs at an internal bus speed of 266mhz. So, if you set the new memory to run at a 1:1 with your CPU, both will be at 266mhz. This is fine and should be very stable. If you choose to run a different memory divider to run the memory faster than the CPU, set it to run it at DDR800. This is the stock speed of the memory and should also be stable. You will need to set the memory voltage manually to do this. Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 Ive lowered the memory frequency from 800 mhz to 533 mhz , and kept the 4-4-4-12 latencies on 2.1 V . Everything is going fine , and CPU-Z shows me 1:1 DRAM:FSB ration . Would be ok to keep those values ? Yes those are fine. However, since you have a quad core CPU, if it is stable with the memory at DDR800 I would suggest running that. Either is fine and should be stable. Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 Ive made two different test , with CPUmark , i dont know how trustable is this software . Anyway , the system seems to perform better , not much better , like 15 points higher , using the ram on 533 mhz . I will keep those settings . Thank you very much for your help Sir . Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 Interesting, in most cases the faster RAM setting will give better benchmarks if only 1-5%. However, if your test is only testing the CPU then it won't reflect the memory performance increase. Your best test of the system will be to test it doing what you built the machine to do. Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 My english is bad , and i made some mistakes on above . It was about using ram on DDR533 values . Thank you again . Link to comment Share on other sites More sharing options...
Yellowbeard Posted February 21, 2008 Share Posted February 21, 2008 Your English seems very good to me! Link to comment Share on other sites More sharing options...
moog Posted February 21, 2008 Author Share Posted February 21, 2008 The best i could learn from american movies :) Link to comment Share on other sites More sharing options...
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