pctechguide.com

  • Home
  • Guides
  • Tutorials
  • Articles
  • Reviews
  • Glossary
  • Contact

Pentium 4 Memory

Dual-channel memory operation is dependent on a number of conditions being met, Intel specifying that motherboards should default to single-channel mode in the event of any of these being violated:

  • DIMMs must be installed in pairs
  • Both DIMMs must use the same density memory chips
  • Both DIMMs must use the same DRAM bus width
  • Both DIMMs must be either single-sided or dual-sided.

Currently, there are two different strategies being employed in dual-channel memory controllers, one in which where each memory bank has its own memory channel and an arbiter distributes the load between them and the other to actually create a wider memory channel, thereby doubling up on standard DDR’s 64-bit data paths. Current Intel chipsets employ the latter technique, with each pair of installed DIMMs acting as a 128-bit memory module, able to transfer twice as much data as a single-channel solution, without the need for an arbiter.

DIMM

This particular motherboard has 6 DIMM slots, arranged as two groups of three and colour-coded to indicate how memory modules should be installed in pairs.

 

Each group represents a separate channel, as follows:

  • Channel A: DIMMs 1, 2 and 3
  • Channel B: DIMMs 4, 5 and 6

DIMM1 pairing up with DIMM4 (the pair of orange slots), DIMM2 with DIMM5 and DIMM3 with DIMM6.

It’s important to refer to the Motherboard User Manual to determine precisely how DIMM slots may be populated to achieve dual-channel operation. In this case, DIMM3 and DIMM6 can only be used if the neighbouring DIMM2 and DIMM5 slots are either not occupied, or occupied with only a single-sided DIMM, the following table illustrating all the permitted dual-channel combinations:

DIMM1 DIMM2 DIMM3 DIMM4 DIMM5 DIMM6
2 memory modules DS/SS X X DS/SS X X
X DS/SS X X DS/SS X
X X DS/SS X X DS/SS
4 memory modules DS/SS DS/SS X DS/SS DS/SS X
6 memory modules DS/SS SS SS DS/SS SS SS

It is also the case that dual-channel memory performance varies, dependent on the way in which memory is configured. The following table illustrates DDR400 performance for the Intel 865P chipset used by the motherboard in question:

# DIMMS Sides per DIMM Mode SC or DC Ranking
2 2 Dynamic Dual channel 1
4 2 Dynamic Dual channel 2
4 1 Dynamic Dual channel 2
2 1 Dynamic Dual channel 3
4 Any Normal Dual channel 4
Any 2 Dynamic Single channel 5
Any 1 Dynamic Single channel 6
Any Any Normal Single channel 7

Interestingly, the first two rankings are reversed for the 875P chipset.

Insert the module into an available expansion socket, noting how the module is keyed to the socket. This insures the module can be plugged into the socket one way only.

Fit

SDRAM DIMMs and RIMMs both have two notches, albeit with different spacing. DDR modules – which we’re using here – have only one.

Firmly press the module into position, making certain the module is completely seated in the socket. The ejector tab clips will close automatically.

 

Repeat this procedure for each module you are installing.

 

  • Pentium 4 CPU
  • Pentium 4 Fan
  • Pentium 4 PSU
  • Pentium 4 Memory
  • Pentium 4 Removal

Share this:

  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)

Related

Filed Under: How to Install a Pentium 4 CPU

Latest Articles

Moore’s Law in IT Architecture

Moore’s Law in IT Architecture

According to Moore's Law formulated in 1965 by Gordon Moore, co-founder of Intel), the number of transistors per integrated circuit would double every 18 months. Moore predicted that this trend would hold for the next ten years. In fact, … [Read More...]

CD-ROM CLV

The first generation of single-speed CD-ROM drives were based on the design of audio CD drives, employing constant linear velocity (CLV) technology to spin a disc at the same speed as an audio CD which, with error correction, meant 150 … [Read More...]

FireWire 800 Interfaces

In early 2001 the battle between IEEE 1394 and USB advanced another step with the 1394 Trade Association's approval of specifications for a faster version of IEEE 1394, called IEEE 1394b. The new standard is backwards compatible - special … [Read More...]


What Are the Best eSports Games to Watch in 2020?

The esports industry is growing at a remarkable rate.  According to Statistica, the global market for esports is expected to reach $1.79 billion … [Read More...]

Choosing the Safest Crypto Wallet for the New Year

 There are a number of excellent benefits of cryptocurrencies.  They are extremely convenient and offer a tremendous amount of privacy. … [Read More...]

Guidelines on Troubleshooting Python Code

Whenever we write a computer program we need to verify that it works as expected. Usually we execute the code, if necessary we provide some inputs, … [Read More...]

Developing a Python to Extract Data from Your Smartphone

Many times we ask ourselves: "What part of the universe is this phone from?", even if we already know where it is, but we don't know which operator. … [Read More...]

Most Demanding Heroes to Play in Dota 2

Dota 2 is one of the most popular multi-player online combat games. It had an average player count of 485,000 throughout most of 2018. The peak number … [Read More...]

University of Minnesota Report Highlights AI Advances in Facial Recognition

Big data is leading to massive changes in our daily lives. The University of Minnesota has published a study on the advances in facial recognition … [Read More...]

Guides

  • Computer Communications
  • Mobile Computing
  • PC Components
  • PC Data Storage
  • PC Input-Output
  • PC Multimedia
  • Processors (CPUs)

Recent Posts

Google Chrome Shortcuts

Google Chrome is a very popular Web browser. It is my browser of choice because it is fast and secure. It is also very flexible and comes with many … [Read More...]

Managing vCard Files for Effective Communication and Branding Optimization

vCard is a file format that is used for digital business cards. There are also vCard editors that allow you to create electronic business cards if you … [Read More...]

AMD Thoroughbred

In the summer of 2002 AMD began shipping its first desktop processor built using a 0.13-micron fabrication process. AMD expects the transition to the … [Read More...]

Return to top of page

Copyright © 2019 About | Privacy | Contact Information | Wrtie For Us | Disclaimer | Copyright License | Authors