blackwinterday
Limp Gawd
- Joined
- Mar 2, 2007
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- 145
I've a simple question on this matter. What factors are deciding this ratio? Is it only CPU multiplier and memory speed? Or is it affected by HTT multiplier as well?
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FSB:DRAM Ratio
- Thread starter blackwinterday
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blackwinterday
Limp Gawd
- Joined
- Mar 2, 2007
- Messages
- 145
Reason i'm asking for is that i can't get my memory to work with cpu/7 or cpu/8 ratios with over 280Mhz bus speed. Reason i want it do so is that my cpu can do 2.8ghz yet my memory can't do over 900mhz. So i have to use cpu/7 ratio >> 2800/7=400
I hope there is an expert out there that at least understood what i'm asking.
I hope there is an expert out there that at least understood what i'm asking.
I'm a little confused by what you are asking but Ill try to answer what I think you want to know. The memory speed is linked to the FSB speed based on whatever multiplier you are using - the CPU speed is likewise linked to the FSB speed based on its multiplier, which is normally locked. I'm not positive about AM2 chips since I have a 939 version but I believe that those chips are CPU multiplier locked as well. So the only way to get to 2.8Ghz with a 7x multiplier would be to run your FSB at 400 Mhz, which is what it sounds like you are doing. You should then be able to adjust the FSB
RAM multiplier to drop the DRAM speed down to something your memory can handle - maybe a 9:10 or 5:6 if you have those options. I'm not sure how overcloking friendly your MB and BIOS are though - do you have the option to change the FSBRAM multiplier? Also be sure to check the hypertransport speed, which is usually also tied to the FSB speed - if you are overclocking the HTT you could be running into trouble there also.
RAM multiplier to drop the DRAM speed down to something your memory can handle - maybe a 9:10 or 5:6 if you have those options. I'm not sure how overcloking friendly your MB and BIOS are though - do you have the option to change the FSBRAM multiplier? Also be sure to check the hypertransport speed, which is usually also tied to the FSB speed - if you are overclocking the HTT you could be running into trouble there also.blackwinterday
Limp Gawd
- Joined
- Mar 2, 2007
- Messages
- 145
No mate, you got me wrong.
After few more try i was able to hit 300Mhz with 9x cpu multi. I can also hit 2.8Ghz with 10x cpu multi. Problem is i need to keep my memory speed high as well as cpu speed so i won't sacrifice one for the other. But this is not the case because i can't use CPU/7 ratio.
After few more try i was able to hit 300Mhz with 9x cpu multi. I can also hit 2.8Ghz with 10x cpu multi. Problem is i need to keep my memory speed high as well as cpu speed so i won't sacrifice one for the other. But this is not the case because i can't use CPU/7 ratio.