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Old 04-10-2007, 06:04 AM   #1 (permalink)
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Question What does x-x-x-xx mean on RAM settings?

People always say

I'm running at 5-5-5-15...

What does the (5)-(5)-(5)-(15) in this example stand for? Theres about 8-9 different settings I can adjust in my BIOS for the DRAM configuration...

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Old 04-10-2007, 08:42 AM   #2 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

that is your timings....closer together timings are best for overclocking....
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Old 04-10-2007, 08:50 AM   #3 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

the timings listed on the memory specs are generally CAS-TRCD-TRPD-TRAS.
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Old 04-10-2007, 12:01 PM   #4 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

How can you change these? How do you knw they are running stable?
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Old 04-10-2007, 01:21 PM   #5 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

You can change them through the BIOS. Usually your computer won't start if it is unstable.
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Old 04-10-2007, 01:57 PM   #6 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

run memtest to see if it is stable.....its a free download here- Memtest86+ - Advanced Memory Diagnostic Tool
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Old 04-10-2007, 08:58 PM   #7 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

lol...
it'll go beeeeeep...beeeeeeep...beeeeeeep
over and over again.
learn what they are dude. very confusing, i know.
if you are using ddr2, look at it this way:
the first number, you wont be able to go under 4 unless you ram is some HIGH dollar stuff.
the second number should probably be the same as the first.
the third number can sometimes be one lower than the first. stock, usually it is the same.
the fourth number, take your pick till you find one that works. usually stock it will be 3x the first, but very possible to make it much lower.
A Guide to Memory Timing
this will help.
good luck
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Old 04-10-2007, 09:02 PM   #8 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

Quote:
Originally Posted by nagasama View Post
lol...
it'll go beeeeeep...beeeeeeep...beeeeeeep
over and over again.
learn what they are dude. very confusing, i know.
if you are using ddr2, look at it this way:
the first number, you wont be able to go under 4 unless you ram is some HIGH dollar stuff.
the second number should probably be the same as the first.
the third number can sometimes be one lower than the first. stock, usually it is the same.
the fourth number, take your pick till you find one that works. usually stock it will be 3x the first, but very possible to make it much lower.
A Guide to Memory Timing
this will help.
good luck
The first number is your cas latency....it CAN go under 4....most are 2.5 or 3.....i dont know why you said the first number couldnt go under 4.
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Old 04-10-2007, 09:04 PM   #9 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

ddr is 2.5 or 3.
thats where the "if you are using ddr2" comes in
dude when you find ddr2 that goes under CAS4, lemme know how much it costs you
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Old 04-10-2007, 10:47 PM   #10 (permalink)
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Default Re: What does x-x-x-xx mean on RAM settings?

Here are CAS 3 DDR2 memory:
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