Why can't I set my ram voltage to 2.2?

[lollybo]

I have some crucial ballistix ram, and it's rated at 2.2v. My BIOS settings had it on 1.8. But when I set it on 2.2, I get a warning once I boot into windows. Why is this so? Do I lose performance by running it on 1.8? How can I bypass this?

 

[Old Hippie]

But when I set it on 2.2, I get a warning once I boot into windows.

A warning that says........?

 

[lollybo]

A warning that doesn't say anything, but instead goes *beep* *beep* *beep* *beep*

And when I check my mobo monitor, the ram voltage is in red and is too high. It gives a range of like 1.75 - 2.04 or something like that.

 

[JustaGeek]

If the RAM works without errors, keep it at 1.8V, or the lowest possible stable voltage.

Run the Orthos/Prime95 and/or Memtest to test the stability.

 

[lollybo]

Thanks.

Just so I don't have to make a new thread, can someone explain to me what RAM timings do? And also, what is that one ratio, that many people say to keep 1:1?

 

[Ozoneman]

Originally posted by: lollybo
A warning that doesn't say anything, but instead goes *beep* *beep* *beep* *beep*

And when I check my mobo monitor, the ram voltage is in red and is too high. It gives a range of like 1.75 - 2.04 or something like that.

Those beeps may be "Power on Self Test Beep Codes" telling you something is wrong with your memory.

http://www.pchell.com/hardware/beepcodes.shtml

Try resetting your memory sticks.

 

[JustaGeek]

The RAM timings determine how fast the data travels within the memory modules - but obviously it is more complicated than that.

http://en.wikipedia.org/wiki/CAS_latency

1:1 means to keep the Memory Bus synchronized with the Front Side Bus.

Example: FSB speed 400MHz and Memory Bus 400MHz = 1:1. The memory speed will be doubled (DDR) x 2 =800MHz.

If the FSB speed is lower than the Memory Bus, a multiplier, or a ratio, must be used.

In my case:

FSB 325MHz x 16/13 ratio = 400MHz Memory Bus speed x 2 DDR2 = 800MHz memory speed.

Hope this helps.

 

[badnewcastle]

Originally posted by: lollybo
Thanks.

Just so I don't have to make a new thread, can someone explain to me what RAM timings do? And also, what is that one ratio, that many people say to keep 1:1?

The 1:1 Ratio refers to how your front side bus (FSB) speed compares to your memory speed. Your front side bus is the highway data travels between your memory and cpu. It is ideal for your memory and FSB to be running at the same speed... so you get FSB:Memory 1:1. Unless you overclock you are not going to get a 1:1 ratio with ddr2 400.

Here's a link for you to read more... it's about overclocking but there is a lot of good info in it aswell Read about it here.

As for ram timings... Happy reading.