Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: memory frequency changed in bios

08 Feb 2013   #1
JoshuaMitchell

Windows 7 Ultimate x64 Build 7601
 
 
memory frequency changed in bios

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?


My System SpecsSystem Spec
.

08 Feb 2013   #2
Brink
Microsoft MVP

64-bit Windows 10
 
 

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?
My System SpecsSystem Spec
08 Feb 2013   #3
JoshuaMitchell

Windows 7 Ultimate x64 Build 7601
 
 

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 ^^
My System SpecsSystem Spec
.


08 Feb 2013   #4
Brink
Microsoft MVP

64-bit Windows 10
 
 

If they are Crosair 2GB ddr2 800, then yes they could run at 800MHz.
My System SpecsSystem Spec
08 Feb 2013   #5
JoshuaMitchell

Windows 7 Ultimate x64 Build 7601
 
 

Quote   Quote: Originally Posted by Brink View Post
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
My System SpecsSystem Spec
08 Feb 2013   #6
Brink
Microsoft MVP

64-bit Windows 10
 
 

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
My System SpecsSystem Spec
09 Feb 2013   #7
JoshuaMitchell

Windows 7 Ultimate x64 Build 7601
 
 

Quote   Quote: Originally Posted by Brink View Post
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 ^^
My System SpecsSystem Spec
09 Feb 2013   #8
Brink
Microsoft MVP

64-bit Windows 10
 
 

You're most welcome.
My System SpecsSystem Spec
Reply

 memory frequency changed in bios




Thread Tools





Similar help and support threads
Thread Forum
Win 8 BIOS changed to legacy, driver transfer?
I have an HP Pavilion 500-169, I have changed BIOS to legacy and spent hours finding Drivers for it, it only has an 80GB Temporary HDD right now but im upgrading to a 500GB. Is there a way to transfer the drivers from the old HDD to the new HDD without having to spend hours trying to find the...
Drivers
4Gb memory (2.75 Gb usable) memory remapping in bios causes BSOD
I recently did a new install of Windows 7 64 bit. I noticed windows showed 4Gb of ram (2.75Gb usable). I read tons of articles after googling this and tried several options to free up some more ram. I have 2 options in bios to change memory remapping over 4GB. S/W and H/W. When I enable S/W...
BSOD Help and Support
Ram Memory running on low frequency.Why?
Hello all, i made a little update for my computer changing the motherboard, ram and videocard. The motherboard is Asrock G41M-VS3 R2.0 and the RAM is this Corsair Memory. It is a ddr3 1333mhz ram memory and my motherboard is supporting 1333mhz ddr3 memory, but when i go in BIOS i see the RAM is...
Hardware & Devices
Need help with memory frequency and timings with a 1600MHz CL9 kit
I recently bought the following RAM Corsair 8GB (2X4GB) DDR3 1600Mhz Red Vengeance Memory.. | Ebuyer.com The advertised max tested frequency and timings are 9-9-9-24 at 1600MHz at 1.5v When in my rig (see my system specs), they default at 9-9-9-24 at 1333MHz at what seems to be 1.6v (when...
PC Custom Builds and Overclocking
changed BIOS settings..:((
I was trying to increase the effective core speed on my computer. I tried to do it from my bios and did many changes in the settings by enabling each core.. Auto Overclock. and things like that. Now when i saved and exit the computer is not even showing the bios screen, in fact it is not showing...
Performance & Maintenance
Just found out I bought memory with different frequency
I thought I bought the same DDR3 1333 memory, but it turns out that CPU-Z tells me differently. I've been getting some BSODs but they don't seem to point to memory problems. Should I be worried?
Hardware & Devices

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 01:40.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App