Alright, I'm having some trouble getting my system to boot with my CPU at 3.2GHz. I'm trying to use a multiplier of 8 and 400FSB to get to 3.2GHz. This is because I want my RAM to operate at 1600. My CPUs voltage is 1.3 and I think my RAM is set to ~1.5.
When I try to put at 8x400 / 1600 the computer will just reset a few times without getting passed POST. Then it finally comes up and I re-enter the BIOS to see that everything has been reset. I tried 8x375 to get 1500 once and I got to the windows loading screen but it crashed a few seconds later. Could upping the RAM voltage help any or am I just stuck at 9x333 / 1333?
Why did u buy 1600 RAM??
Even at 3.2Ghz a Q6600 will only run the ram @ 711Mhz @1:1 (9x multi)
Q6600 @ 3.2 = 8x400QDR = 200Mhz FSB
Ram @ 1600DDR = 800Mhz
In other words, your ram is 4x faster than you need based on 8x@3.2
800mhz ram would give you a max 1:1 oc of (9x)3.6Ghz or (8x)3.2Ghz. U can always OC the ram a little too.
1600Mhz would give a 1:1 of 800x9=7.2Ghz
...just fyi
Check ur ram voltage as stated. Normally it needs ~1.8-2.2.
Bump it up a notch at a time. Read ur ram stick or newegg they may have a max/suggested voltage.
Why did u buy 1600 RAM??
Even at 3.2Ghz a Q6600 will only run the ram @ 711Mhz @1:1 (9x multi)
Q6600 @ 3.2 = 8x400QDR = 200Mhz FSB
Ram @ 1600DDR = 800Mhz
In other words, your ram is 4x faster than you need based on 8x@3.2
800mhz ram would give you a max 1:1 oc of (9x)3.6Ghz or (8x)3.2Ghz. U can always OC the ram a little too.
1600Mhz would give a 1:1 of 800x9=7.2Ghz
...just fyi
Check ur ram voltage as stated. Normally it needs ~1.8-2.2.
Bump it up a notch at a time. Read ur ram stick or newegg they may have a max/suggested voltage.
What on Earth are you talking about?
An 800 MHz FSB is crazy, I don't think I've seen anyone pull that off. You do not need an 800 MHz FSB to use the 1600 MHz RAM. FSB needs to be set to 400 MHz to use RAM at 1600 MHz for a 1:1 ratio. He is using DDR3 RAM, which means double data rate three.
If he was using DDR (double data rate) his effective memory clock would be double the FSB so 800 MHz
If he was using DDR2 (double data rate 2) his effective memory clock would be 1200 MHz
He is using DDR3, so you double the FSB three times (plus the original FSB value) to get the effective memory clock for a 1:1 ratio, so 1600 MHz for a 1:1 ratio at a FSB of 400 MHz.
Correction: An FSB of 400 MHz with DDR3 RAM at 1600 MHz is a 1:2 ratio
I tried upping the voltages to 1.923 on the RAM at 8x400 / 1600 and it failed and did the same thing before. I didn't want to go any higher than 1.9 because I don't know where I should stop. But I did have a little success I guess, I am currently running on 8x375 / 1500. I changed the voltages to 1.5(+0.35) and it seems to be running fine right now. Where as before, it crashed at the Windows loading screen.
Though, I'd still like to get the full performance out of it so any more help would be appreciated.
An 800 MHz FSB is crazy, I don't think I've seen anyone pull that off. You do not need an 800 MHz FSB to use the 1600 MHz RAM. FSB needs to be set to 400 MHz to use RAM at 1600 MHz for a 1:1 ratio. He is using DDR3 RAM, which means double data rate three.
If he was using DDR (double data rate) his effective memory clock would be double the FSB so 800 MHz
If he was using DDR2 (double data rate 2) his effective memory clock would be 1200 MHz
He is using DDR3, so you double the FSB three times (plus the original FSB value) to get the effective memory clock for a 1:1 ratio, so 1600 MHz for a 1:1 ratio at a FSB of 400 MHz.
Correction: An FSB of 400 MHz with DDR3 RAM at 1600 MHz is a 1:2 ratio
Are you insane? What you said is complete gibberish. Mrmez is right although his explanation is a little confusing. Let me explain it to you.
DDR, DDR2 and DDR3 all run twice as fast ast the base FSB clock, hence the term DDR, which means Double Data Rate.The difference is that the internal memory clock drops by half for each revision, allowing it to run at a higher base FSB clock.
DDR2 and DDR3 at the same base FSB clock would both run at 800Mhz. DDR3 1600 is designed to run at a base clock of 800Mhz not 400mhz. The difference between the base clock of 400Mhz and the memory bus clock of 800Mhz can be adjusted by setting the memory multiplier to 4 instead of 2.
Are you insane? What you said is complete gibberish. Mrmez is right although his explanation is a little confusing. Let me explain it to you.
DDR, DDR2 and DDR3 all run twice as fast ast the base FSB clock, hence the term DDR, which means Double Data Rate.The difference is that the internal memory clock drops by half for each revision, allowing it to run at a higher base FSB clock.
DDR2 and DDR3 at the same base FSB clock would both run at 800Mhz. DDR3 1600 is designed to run at a base clock of 800Mhz not 400mhz. The difference between the base clock of 400Mhz and the memory bus clock of 800Mhz can be adjusted by setting the memory multiplier to 4 instead of 2.
I don't know what you corrected, but you post is still complete BS. "Correction: An FSB of 400 MHz with DDR3 RAM at 1600 MHz is a 1:2 ratio" is correct, but it doesn't tell the OP anything and certainly doesn't clear up the previous gibberish.
Unrelated to your post, to clear up any misconceptions I was referring to the Gigabyte mobos when I said you could set the multiplier to 4 instead of 2, which would result in a memory ratio of 1:2 1600Mhz and not not 1:1 800Mhz respectively.
Read these before you post about RAM, especially if you are going to start your post with "What on Earth are you talking about?".
supremelaw, you got it right. The best medium OC setting for a Q6600 is 400 base clock. 400 x 8 multi = 3.2Ghz 400 x 2 = 800Mhz external memory clock 1:1. With DDR3 1600 you can run 1:2 1600Mhz external memory clock.
DDR3 is really useful only for OCing the 1333 and 1600 FSB CPUs where the OC at 1:1 exceeds the maximum frequency of DDR2 1066 or 533Mhz FSB base clock.
Message edited by Zorg on 07-25-2008 at 09:25:01 PM
I don't know what you corrected, but you post is still complete BS. "Correction: An FSB of 400 MHz with DDR3 RAM at 1600 MHz is a 1:2 ratio" is correct, but it doesn't tell the OP anything and certainly doesn't clear up the previous gibberish.
Unrelated to your post, to clear up any misconceptions I was referring to the Gigabyte mobos when I said you could set the multiplier to 4 instead of 2, which would result in a memory ratio of 1:2 1600Mhz and not not 1:1 800Mhz respectively.
Read these before you post about RAM, especially if you are going to start your post with "What on Earth are you talking about?".
Excuse me for making an honest mistake. My post was BS, but then I appended to the end of it as you pointed out. The correction clearly debunks everything I previously said. For the sake of being honest about my mistake I left the rest of what I posted up. I already read those articles, hence the correction I made to my post.
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Take my love, take my land, take me where I cannot stand.
I don't care, I'm still free you can't take the sky from me.
Not to be a prick, but go back and edit the entire post with a note that it was edited or go back and strike lines in the gibberish. Noobs will get seriously confused.
While I was at 8x375 / 1500 my system crashed when I tried playing COD4 and then crashed again when windows started to come up (after I typed in my password). Before that it was running fine, but now I'm back at 9x333 / 1333 still reading and trying to tweak it to the max.
I need to know one thing though. What's the maximum voltage I should use for the RAM without damaging it?
While I was at 8x375 / 1500 my system crashed when I tried playing COD4 and then crashed again when windows started to come up (after I typed in my password). Before that it was running fine, but now I'm back at 9x333 / 1333 still reading and trying to tweak it to the max.
I need to know one thing though. What's the maximum voltage I should use for the RAM without damaging it?
Manufacturer's page says it can go up to 1.95 volts.
You could probably go a little higher, but I personally do not like to over volt things. Sometimes it works, and sometimes you can do some real damage and be left with a voided warranty.
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Take my love, take my land, take me where I cannot stand.
I don't care, I'm still free you can't take the sky from me.
While I was at 8x375 / 1500 my system crashed when I tried playing COD4 and then crashed again when windows started to come up (after I typed in my password). Before that it was running fine, but now I'm back at 9x333 / 1333 still reading and trying to tweak it to the max.
I need to know one thing though. What's the maximum voltage I should use for the RAM without damaging it?
You should not need to increase the RAM voltage past the stock 1.9V. even at a base FSB of 400 it is only running at 800Mhz, which is significantly under clocked. You have another problem. Did you lock the PCIe to 100 Mhz? Did you lock the memory multiplier to 2? Run CPU-Z and post pics all of the tabs. If you don't have a pic host you can use TinyPic .
