Solved memory frequency changed in bios

[JoshuaMitchell]

Hello,
I was wondering i changed the frequency in the bios from automatic to 400MHz.
I got 2x2GB DDR2_800 400MHz so does this setup improving my system or does it have bad effects?

Friendly kinds,
Joshua Mitchell

Edit: where stand the "800" for?

 

[Brink]

Hello Joshua,

It depends on what your BIOS showed the RAM MHz speed as while it was on automatic.

What brand and model number is your RAM?

 

[JoshuaMitchell]

Crosair 2GB ddr2 800
But he only shows 400MHz in my bios, and its a 800MHz or I'm i not right,

Edit: Ill make a picture but its allready late so ill post it tomorrow ^^

 

[Brink]

If they are Crosair 2GB ddr2 800, then yes they could run at 800MHz.

 

[JoshuaMitchell]

If they are Crosair 2GB ddr2 800, then yes they could run at 800MHz.

But why can i only change it up to 400MHz @ my bios in stead of 800MHz

I have 3 options:

Auto,
333MHz DDR2_667
400MHz DDR2_800

 

[Brink]

Ah, ok. Here's what's going on.

DDR2-800 is the same thing as PC2-6400, and runs at a memory bus clock speed (frequency) of 400MHz. However, being DDR2 (DDR2 stands for Double Data Rate type 2) it transfers 2 "chunks" of data per clock cycle with an "effective" transfer rate of 800 MT/s.

It's basically just a bit misleading. You're RAM is actually 400MHz, but effectively like 800MHz. Thus they label as "DDR2 800".

Double data rate - Wikipedia, the free encyclopedia

 

[JoshuaMitchell]

Ah, ok. Here's what's going on.

DDR2-800 is the same thing as PC2-6400, and runs at a memory bus clock speed (frequency) of 400MHz. However, being DDR2 (DDR2 stands for Double Data Rate type 2) it transfers 2 "chunks" of data per clock cycle with an "effective" transfer rate of 800 MT/s.

It's basically just a bit misleading. You're RAM is actually 400MHz, but effectively like 800MHz. Thus they label as "DDR2 800".

Double data rate - Wikipedia, the free encyclopedia

Aaaah okay thanks for the information
Its to bad thats the memory only can be modify up to 400MHz.
Btw @ my motherboard i see where my memory goes on (memory slot) the same value of 800MHz
So my motherboard supports a DDR2 800MHz bank.
I allready flashed my BIOS into the last version (2.10).

Still glad you could help me i appreciate it ^^

 

[Brink]

You're most welcome.