DDR 140 pin and 248 pin DIMMs and they look the same

  • Thread starter Thread starter biferi
  • Start date Start date
  • Tags Tags
    Pin
Click For Summary

Discussion Overview

The discussion revolves around the physical differences between DDR 140 pin and 248 pin DIMMs, specifically focusing on the placement of notches and the dimensions of the memory modules. Participants explore the implications of these differences for compatibility and identification.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant notes that DDR 140 pin and 248 pin DIMMs appear similar but questions if they are the same due to notch placement.
  • Another participant asserts that the notch at the bottom is not in the same place, emphasizing that a DDR module will not fit in a DDR2 socket.
  • A participant inquires about the length differences between DDR3 and DDR1/DDR2 memory modules, suggesting that DDR3 is longer.
  • One participant challenges another's use of online resources, implying that searching for information could yield clearer answers.
  • There is a claim that the notches on DDR and DDR2 modules appear to be in the same place based on personal observations, conflicting with information from Wikipedia.
  • Another participant points out that the notches are not aligned exactly, referencing a specific image for clarification.
  • A participant expresses difficulty in finding specific dimensional information about DDR1 and DDR2 modules online.
  • It is mentioned that the notches between DDR1 and DDR2 are different by 2-3 millimeters.

Areas of Agreement / Disagreement

Participants express differing views on the notch placement of DDR and DDR2 modules, with some asserting they are the same while others insist they are different. The discussion remains unresolved regarding the exact dimensions and compatibility of the modules.

Contextual Notes

Some participants reference external sources for information, but there is uncertainty about the accuracy of these sources and the specific measurements of the memory modules.

biferi
Messages
191
Reaction score
0
I am looking at photos on google for DDR 140 pin and 248 pin DIMMs and they look the same.

The both have two notches on both the right and left sides and the pins on the bottum have the same notch in the same place I think.

Am I right?
 
Computer science news on Phys.org
The notch at the bottom is not in the same place. A DDR module won't fit in a DDR2 socket.

220px-Desktop_DDR_Memory_Comparison.svg.png
 
Thanks you for the help but one thing are DDR3 memory 4 inch Long and DDR 1 and 2 memory are 3 inch Long?
 
Is it really so difficult to use google?

http://www.simmtester.com/page/news/showpubnews.asp?num=168
 
When I look at your pictures off DDR memory the Notch on the DDR and DDR2 are in the same place.
But on Wiki. it says DDR and DDR2 have the Notch into diferant places.

is the photos you sent me off a websitye?
 
biferi said:
When I look at your pictures off DDR memory the Notch on the DDR and DDR2 are in the same place.
But on Wiki. it says DDR and DDR2 have the Notch into diferant places.

is the photos you sent me off a websitye?
Look closer at the dashed lines on AlephZero's DDR picture. The notches are not lined up exactly.
 
I see it now thanks but I did go to Wiki. and look to see if I can see how Long in inch DDr 1 and 2 are but can not find it?
 
DDR 1 and DDR 2 have not the same notches, it is up to 2-3 milimetars different.
 

Similar threads

  • · Replies 7 ·
Replies
7
Views
3K
Replies
37
Views
7K
  • · Replies 14 ·
Replies
14
Views
2K
Replies
20
Views
5K
Replies
12
Views
2K
  • · Replies 5 ·
Replies
5
Views
4K
Replies
4
Views
1K
  • · Replies 18 ·
Replies
18
Views
7K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K