?
Solved

Mixing DDR266 and DDR333

Posted on 2006-07-14
6
Medium Priority
?
1,444 Views
Last Modified: 2007-12-19
Hi, everyone, just much of curiosity, and wanted to try. is it alright to mix DDR266 and DDR333, which my mainboard runs only a DDR266. I read a book about it, which tells that, it's alright to put DDR333 RAM when your mainboard runs only DDR266, but it doesn't make a change, it will still run as DDR266. Just much of my curiosity, what if I'll mixed the Two (2), which are different type, because it has a same voltage requirements.

Anybody who experience mixing DDR266 and DDR333 would be much appreciated on your comment/suggestion.
0
Comment
Question by:r2r
6 Comments
 
LVL 15

Assisted Solution

by:Juan Ocasio
Juan Ocasio earned 150 total points
ID: 17113033
You can use the DDR333 in a DDR266 MB but it will only run at 266Mhz. I would recommend using the same type of RAM however.  NOt necessarily the same brand, but the chips with the same specs (CL, speed)

HTH

jocasio
0
 

Expert Comment

by:newbiekv
ID: 17113117
hi,

Both memory module will work but it won't be dual channel.  You need to have memory of the same speed for dual channel.
0
 
LVL 70

Accepted Solution

by:
Gary Case earned 225 total points
ID: 17113246
In the vast majority of cases they will work fine;  but there are exceptions.   Memory is SUPPOSED to be downwards compatible -- but it does NOT always work that way.   The SAFEST thing to do for absolute compatibility is to use memory rated at the speed the motherboard requires.

But the assumption in your question is correct (as noted above) -- it will simply still run as DDR266 in the case you cited.   HOWEVER, as newbiekv noted, the two modules will NOT run in dual channel mode, since the SPD information will be different (a dual-channel motherboard will not use the dual channel mode if the modules do not report identical specs in the SPD info).   Of course if you're not running a dual-channel-capable system that doesn't make any difference.
0
Evaluating UTMs? Here's what you need to know!

Evaluating a UTM appliance and vendor can prove to be an overwhelming exercise.  How can you make sure that you're getting the security that your organization needs without breaking the bank? Check out our UTM Buyer's Guide for more information on what you should be looking for!

 
LVL 5

Expert Comment

by:Devario Johnson
ID: 17113387
like Gary said, this isnt the safest thing to do.  No prerformance increase.  best to stick to 266
0
 
LVL 14

Expert Comment

by:tmj883
ID: 17114294
If the features of your memory modules support "differential clock input", this should be no problem for a single channel memory system. Everest Home Edition can read the attributes of your memory modules:
http://www.majorgeeks.com/download4181.html
Available at above.
T
0
 
LVL 32

Expert Comment

by:willcomp
ID: 17116090
Odds are that it'll work without any problems.  If it doesn't, just remove memory module.  Should not affect (damage) either module.  There are some motherboards that might have problems related to newer, higher density chips but once again, no harm will befall your modules.
0

Featured Post

Receive 1:1 tech help

Solve your biggest tech problems alongside global tech experts with 1:1 help.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

pc, laptop  monitor connection configurations
A clone is a duplicate copy. Sheep have been cloned and maybe someday even people will be cloned, but disk cloning (performed by the hard drive cloning software) is a vital tool used to manage and protect data. Let’s look at what hard drive cloning …
The Relationships Diagram is a good way to get an overall view of what a database is keeping track of. It is also where relationships are defined. A relationship specifies how two tables connect to each other. As you build tables in Microsoft Ac…
How to fix display issue, screen flickering issue when I plug in power cord to the machine. Before I start explaining the solution lets check out once the issue how it looks like after I connect the power cord. most of you also have faced this…
Suggested Courses

599 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question