Asus A7n8X-X Memory Overclocking
Hi, I have a dilema... I just purchased a Kingston PC3200 512MB
400 Mhz DDR Memory stick to use with my brand new AMD Athlon 2700+ 2.17 Ghz CPU.
Only problem is the CPU FSB goes to 166 Mhz, which when running in Sync with the memory, the memory only goes to 166 Mhz.
I've looked around trying to find a solution, and finally I overclocked the CPU FSB to 200 Mhz with a Multiplier of 11x.
It now has a total of 2.2 Ghz.
the main issue is that if I run the RAM at Optimal rate with the FSB 200 Mhz, the computer restarts, freezes, reboots, blue screen of death, the usual nasties!
If the RAM does support 400 Mhz memory?! why does it freeze when it is running at 100% with the FSB 200 Mhz of the CPU?! I am so lost. I am sad that my memory can't run at FULL SPEED, I feel as though I wasted my money because of my Lack of Knowledge. (I presume that Multiply the FSB 200 mhz of the CPU, equals to the Memory 400 Mhz) Please help anyone!
400 Mhz DDR Memory stick to use with my brand new AMD Athlon 2700+ 2.17 Ghz CPU.
Only problem is the CPU FSB goes to 166 Mhz, which when running in Sync with the memory, the memory only goes to 166 Mhz.
I've looked around trying to find a solution, and finally I overclocked the CPU FSB to 200 Mhz with a Multiplier of 11x.
It now has a total of 2.2 Ghz.
the main issue is that if I run the RAM at Optimal rate with the FSB 200 Mhz, the computer restarts, freezes, reboots, blue screen of death, the usual nasties!
If the RAM does support 400 Mhz memory?! why does it freeze when it is running at 100% with the FSB 200 Mhz of the CPU?! I am so lost. I am sad that my memory can't run at FULL SPEED, I feel as though I wasted my money because of my Lack of Knowledge. (I presume that Multiply the FSB 200 mhz of the CPU, equals to the Memory 400 Mhz) Please help anyone!
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Comments
Let's say I have a FSB of 166, which the Athlon 2700+ uses to get it's core speed of 2.17 Ghz.
then I over clock the Memory to run at 200 Mhz, leaving the CPU back at 166 Mhz. I think they call that Asyncronus speed or something like that. The computer starts to freeze, stall, reboot. put it back to normal, and everything is fine.
Ok, so then I increased the FSB of the CPU to 200 MHZ, which should then run in sync with the MEMORY, great... press F10 to save, reboot.... starting WINDOWS! BAM! same thing, stall, freeze, blue screen of death.
it runs perfectly at 166 Mhz, but once it hits 200 Mhz it freezes, I really don't understand because the Memory is PC 3200 400 Mhz!!
thats my whole dilema!
Kingston 512 MB PC3200 400 Mhz Cas 3
it says it supports memory timing 3-3-3, which I have no idea what thats talking about.
I'm also interested in knowing what Precharge Delay is all about also, which is at 8 currently.
Basically at 166 Mhz, its at 8-3-3-2.5, which works perfectly
at 200 Mhz, I can't get it to be stable, I guess Stability is the issue
Drop the multiplier to like 8 first of all when testing memory.
ALWAYS use sync, aka same speed on memory as the cpu.
Start with cas 2,5 on the memory and the rest of the timings should be 5,3,2 for a start. Dont be afraid to use memory voltage as it will not hurt the memory and they won't get hot either.
Edit//Mudd beat me to it. HOLY COW! He can boot to windows at 2.6 on default vcore? Dayum!
Argh!
It sounds like it's kicking out the errors because the ram is running to low a cas on the last setting when it hits 200.
You might consider getting memtest86 and running it in DOS.
Precharge Delay, I still don't know what it does? or why it goes up so high? like what is the difference between 8 and 11?
go up or down?! I am not sure what you are trying to tell me, please be alittle more specific, so I can write this stuff down in my book!
http://www.cluboverclocker.com/reviews/cpu/amd/xp2700/
for the INFO about the Overclockness of the AMD 2700+
thats why it says to use a MAX of 11x multiplier when overclocking this particular CPU!
We need to make sure that it's NOT the cpu that's holding you back so until later drop the multi to 8 and set the timings on the memory to 11,3,3 cas 2.5 and run SYNC at 200 fsb. Go up on the chipset voltage a little as well as the memory voltage.
I really don't feel too comfortable increasing the memory voltage, anything dealing with electricity get's me frighten.
At 86% of it's capacity, running at cpu 200mhx fsb, it goes to 7-2-2-2.5 automatically. Which means it runs at 166 mhz. I did the sis sandra 2004 benchmark.
What will increasing the voltage do? And is it really safe to do it? It normally runs at 2.6 v
I currently increased the cpu once again to 200 mhz fsb, at 11.5x multiplies. Now the pretty one is running at 2.3 ghz
The memory sadly is still at 166mhz, running stable. I'll try that multiplier thing soon, once I get a few replies about the memory voltage, precharge cas. Alrighty!
You'll have to forgive my cas ignorance on the n-force2 as I only had a Shuttle cube with that chipset.
The ram I had was Corsair Xms Twin-X LLPT and it was rated at 2-2-3-5 so I ran it by spd but I ran it as DDR333 with my barton as it gave me better readings in sandra.
my first PC was a Intel Celeron 300 Mhz
then I jumped to a 900 Mhz Thunderbird
then to a 1.67 ghz AMD Athlon XP 2000+
and now to a 2.17 Athlon 2700+ running at 2.3 Ghz
So I haven't had much experience, because the motherboard I had were very much inexpensive like the ECS k7s5a.
I just heard good thing about the Nforce Boards, thats why I'm rockin this one. I just wanted to clear on the memory voltage, sorry about my history!
It seems that you dont want to try our suggestions so i leave it up to you. Good luck!
it increase speed? volatile exploration?
http://www.rme-audio.com/english/techinfo/nforce2_tweaks_02.htm
Change the CPU multiplier to 8x
Change the DDR voltage to 2.8v
Change the RAM timings to the loosest available (largest numbers)
Save & restart
see if it'll boot into windows like that.
Kudos to all!