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A few memory questions and strange timings

Last response: in Memory
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December 4, 2008 7:57:41 PM

Let me first say that I'm a complete noob to the memory and memory timings things, but I was looking at CPU-Z and some of the numbers look strange and I'm not sure if they are supposed to be like this. Here's what the CPU, Memory, and SPD sections in CPU-Z look like"

http://img510.imageshack.us/img510/3158/memorytimingsai...

Is it bad that my FSB: DRAM ratio is 5:6? From what I've read, 1:1 is the best ratio, so why is my ratio so weird? And under the SPD section, in the timings table, are all of those timings supposed to be different? Or are they supposed to read the same? Sorry if these are dumb questions I'm just trying to understand all of this.
December 4, 2008 8:14:13 PM

This seems to be OK.

You have DDr2 800mhz 5-5-5-18 2T.

Dont worrie about other numbers. Look at the mem page only. SDP is just telling more information and you dont really need it.

This ratio depend on fsb vs memory speed. I run it sync 400 to all (1600fsb 800mem)
December 4, 2008 8:23:56 PM

Ah okay thank you very much. Am i at any disadvantages having a 5:6 ratio as opposed to a 1:1?
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December 4, 2008 9:11:34 PM

Maybe some OC pros can answer better then me.

I think its more stable to have a 1:1 ratio. everything work in the same way. But can anyone answer this ?
December 5, 2008 1:04:13 AM

boulard83 said:
This seems to be OK.

You have DDr2 800mhz 5-5-5-18 2T.

Dont worrie about other numbers. Look at the mem page only. SDP is just telling more information and you dont really need it.

This ratio depend on fsb vs memory speed. I run it sync 400 to all (1600fsb 800mem)


Sorry boulard but you are wrong. These timings are wrong. As you can see in image #3 (SPD) under EPP #1 you see the real timings you're memory can achieve. 4-4-4-12 2T. at 800 mhz.

OP you need to go into your BIOS and manually set your timings to 4-4-4-12 and your memory voltage to 2.0 Volt. You will have optimal performance for your memory that way.

Also, if you have an Nvidia chipset. Just set SLI memory to Expert in the bios and the timings will adjust automaticaly. If you have an Intel chipset you need to set them manually.

Have fun!
December 5, 2008 1:32:54 AM

Okay I went and made those changes. The FSB: DRAM ratio is still 5:6, is it supposed to be like that still? Here's a pic of the memory section again so you can see if I've messed anything up. Sorry for my incompetence.


December 5, 2008 1:49:15 AM

If you want 1:1 ratio, set your FSB to 400. Your CPU will overclock so you might need to change the Vcore, or not, depending on the chip.

5:6 Ratio wont be a big deal unless you overclock, you wont win or lose memory speed either way.
December 5, 2008 1:56:17 AM

Okay, thanks for your help. I have been looking into overclocking but I'm currently having a bit of a heat issue. Computer idles at around 50 C and around 65 C at full load. I increased my FSB up a slight 10 MHz and I was nearly hitting temps of 80C at full load. But that's saved for the other topic I have going in the CPU section I suppose. Feel free to join me over there if you have any suggestions! Haha, thanks again though.
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