Hello, I would like to know if the ASUS P4S533-x support high density memory. PC2700 1GB DDR 266MHz cl 2.5 is the memory that I want to buy. Thanks in advancefor your answer

Ram Memory typically operates at half of the frequency rate, ('Speed'), that the Processor's -> FSB does.

Your motherboard supports Processors that have either a 400MegaHertz Front Side Bus, (400MHz FSB), or 533MHz FSB, or 800MHz FSB.

(Northwood Core for 400MHz FSB. The rest is in the other solution I provided)

Processor has a 400MHz FSB?
You can use DDR Sdram ram memory that is 266MHz.
(PC2100)

Processor has a 533MHz FSB?
You can use DDR Sdram ram memory that is either 266MHz, Or 333MHz.
(PC2100 and PC2700 respectively)

Processor has an 800MHz FSB?
You can use DDR Sdram that is either 266MHz, or 333Mhz, or 400Mhz.
(PC2100, PC2700, and PC3200, respectively)

NOTE*
When using a processor that has an 800MHz FSB, and using PC2700, (DDR at 333MHz), the PC2700 ram memory will run at ->
320MHz.

JEDEC has set the voltage requirements for DDR Sdram at 2.5 Volts.
'Performance' ram memory that is DDR Sdram may use higher voltages.
Not recommended unless you know how to overclock.

Although the motherboard, and the ram memory module may have SPD, it doesn't always work,

http://en.wikipedia.org/wiki/Serial_presence_detect

A lot of times you are faced with going into BIOS Setup, and changing the ram memory voltage, IF BIOS Setup has this feature.
This is why I say overclocking experience helps tremendously.

You want Low Density, Unbuffered, Non-ECC, and a CL of 2.5 for PC2700, and a CL of 3.0, (3) for PC3200.

[Why would anyone want to run PC2100> Lol! ]

For additional questions please post in a Comment.

Regards,
joecoolvette

From the manufacturer's web-site:

http://dlsvr.asus.com/pub/ASUS/mb/sock478/p4s533-mx/e1221_p4s533-mx.pdf

download the User Guide (a PDF) and scroll-down to the SPECIFICATIONS section, to find the exact answers to your questions.

You have 4 slots available. Each slot can take a 1gb non ecc memory module with the specs below.

4 DDR II DIMM memory slots (supports up to 4GB memory) 
Supports 1.8V DDR II DIMM 
Supports dual channel DDR II 667/533/400 DIMM

Hi safran0785,
The Asus motherboard, P4S533-MX can run two different types of memory.
(Just not at the same time & in different slots).
You can use 2, 184-pin memory, PC2700/PC2100 MHz or PC1600 up to 2GB. (1GB DIMMs) inserted in the two memory slots closest to the CPU.
Or you can run SDR memory, 168-pin PC133 or PC100MHz DIMMs up to 1GB of memory in the last two slots farthest from the CPU.
You can not run both types of memory at the same time.
The 184-pin DDR PC2700MHz memory is much faster then SDR memory.
The maximum amount of system memory supported is 2GB.

Need more information/questions, just post here.
Good luck safran0785!
Mike

Here is a link to Asus' Qualified Vendor List of RAM modules for your motherboard. I do not see it mention high density RAM. You would need to search the specs on the modules recommended to be sure.

ASUS QVL

In case you don't have the manual, here is a link for it too:

ASUS P4P800 Deluxe Manual

Memory info begins on Page 2-10. Again, there is no mantion of HD modules.

You need DDR PC 2700 184pin memory. Your machine will support upto 2g.

You can buy this memory from anywhere at cheap prices.

Hope this helps
Regards

Hi Patrick,
I see you're point. I know this, you can not run "more than" 512MB in any DIMM slot. That is shown at the bottom of page 10 & the top of page 11. You can not run both types of memory at the same time, even though the chart looks like you could. The description term on page 10, states; Users only can install either 168-pin SDRAM Module or 184-pin DDR DRAM Module at one time. (You can't run both). You can run 4x512MB in all banks using184-pin DDR SDRAM. Or you can run 4x512MB in all banks of 168-pin SDRAMs. Total of 2GB.
So you can not run 1GB of memory in any bank.

Mike

You can use only DDR 266Mhz dimms maximum upto 2 GB. i.e. one DIMMS of 266Mhz of 2GB or two of 1GB each. For more details read bellow:


System Memory Features

• The D845GBV board provide the following memory features:
• 
  Two DIMM sockets supporting 2.5 V (only) 184-pin 200/266 MHz Double Data Rate (DDR) SDRAM DIMMs with gold-plated contacts
  Unbuffered non-ECC DIMMs only
  Maximum total system memory: 2 GB; minimum total system memory: 64 MB
  Serial Presence Detect (SPD) DIMMs only
  Suspend to RAM
• 
  CAUTION:
  Do not use ECC DIMMs with the D845GBV board. Using ECC DIMMs could damage the Desktop Board.
  

For more details click here.

Thanks
Iqbal

need low densisty on ebay 35 buck eash 1 gb ok works on picky mobos way better

Hi Chrisina,

Yes you have made an error in your purchase. Download a free memory checker here:http://www.crucial.com/store/drammemory.aspx to discover what memory you can install in your PC.

Good Luck,

Allan

ajb2000