General discussion

Locked

HIGH/LOW DENSITY MEMORY CHIPS

By galehickey2 ·
Was having problems adding some memory and was told to check that I was not mixing HIGH and LOW DENSITY MEMORY CHIPS. That is a callout I am not familiar with.Any help.

This conversation is currently closed to new comments.

4 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

by Ann777 In reply to HIGH/LOW DENSITY MEMORY C ...
Collapse -

by TheChas In reply to HIGH/LOW DENSITY MEMORY C ...

Many older motherboards cannot properly address the newest high density DIMMS.

1 way to check the density of a DIMM is to compare the number of ICs on the modules.
The fewer the number of ICs on same size (capacity) DIMMs, the higher the density of the module.

I have a PC 100 double-sided (chips on both sides) DIMM that I save as a reference DIMM.
If I am having problems with a PC, I install this DIMM. If the PC now functions properly, I know that I need to install only low density DIMMs in this PC.

SDRAM DIMMs have 3 different levels of density:
Single
Double
Quad

PCs over 3 years old may require single density DIMMs

PCs over 18 months old may not function with quad density DIMMs.

There are also a number of other variations in DIMM design, and various motherboards have other limitations.

2 clock lines versus 4 clock line modules.

CAS latency

Clock cycles

Also, keep in mind that many motherboards have limits as to how large a DIMM will function in them.

Chas

Collapse -

by galehickey2 In reply to

Poster rated this answer.

Collapse -

by galehickey2 In reply to HIGH/LOW DENSITY MEMORY C ...

This question was closed by the author

Back to Windows Forum
4 total posts (Page 1 of 1)  

Related Discussions

Related Forums