RAM compatibilty I want to add RAm for my Dell PC. It requires DDR memory with support for DDR PC2700,DDR PC3200 speeds. Would RAM that is "DDR 400" be compatible? below are my PC specs: thank you very much Maximum Memory Capacity: 2048MB Currently Installed Memory: 640MB Available Memory Slots: 0 Total Memory Slots: 2 Dual Channel Support: No CPU Manufacturer: GenuineIntel CPU Family: Intel(R) Pentium(R) 4 CPU 2.00GHz Model 2, Stepping 4 CPU Speed: 1999 MHz

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

It should this is what dell has for the pc listed on the website
http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&sku=A0740429

go by the law, youre only as fast as your slowest stick of ram, and PC2700 is about the most expensive ram out there.. old ram that is...
if i were you, sell those two, and buy yourself a stick of 512 pc3200..
i mean think about it mathwise...
if you go from 400 mhz ram
to 266 mhz ram
your going down in speed 33 percent...
sell em! =]

here you go mate:

Memory Memory Type DDR SDRAM Number of Memory Slots 2 x 184 Pin DIMMs Supported RAM speeds 266 MHz Max Supported RAM 2 GB

Didn't we speak online about this a couple of days ago? You can't mix and match RAM. What you added is probably not the right config for that machine. You need to go to this link, plug in your machine information and then REPLACE, NOT ADD TO what you have.

http://support.dell.com/support/edocs/systems/dim2400/en/sm_en/specs.htm

There u go! and YES, 2GB is tha maximum RAM you can have on that one.
But NO, you can NOT use PC3200 sticks, this is what you can use:
PC2100 (266-MHz) or PC2700 (333-MHz) DDR SDRAM (non-ECC)

You can read all about in the documentation obove

Good luck
Nic

Your dell dimension takes DDR ram. These are the specs:

Supported pin types: 184 pin DIMM (regular desktop DDR ram)
Supported memory types: DDR PC2700 or DDR PC3200
Supported speeds: 333mhz or 400mhz
Supported stick sizes: 128mb, 256mb, 512mb or 1gb.
MAXIMUM MEMORY ALLOWED: 2gb (2 x 1gb sticks)


If you buy two of these you will max out for ram and give you the best performance::

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1558844&CatId=1600

Max Supported RAM is 3 GB Memory Type DDR SDRAM Supported RAM Speeds 400 MHz · 266 MHz · 333 MHzNumber of Memory Slots 3 x 184 Pin DIMMs

yes, I beleive you can...

Any 184-pin ddr ram should work on this. You can actually use pc3200 (ddr 400) ram as well. Pc2700 ram is ddr333, and a higher speed ddr ram like pc3200 will work just as well if not better than pc2700, it will simply go down to the speed that the processor requests the ram run at. It's all backwards compatible, faster ram can run slower if the computer needs it to run at the slower speed. Depending on the price you can find as long as you get 184 pin ddr ram either pc2700 or pc3200 with work fine with your motherboard. Peter

Your system may have 2 slots for SDRAM and 2 slots for DDR Ram, and must not be mixed, either use only DDR DDR2 or SDRAM. The mobo may only take 2 of the same size sticks e.g 2 x 1GB,or 2 x 256MB, so be carefull as you may waste money on a non recognised peice of ram. If you use a pc3200 and a pc2700 stick it will run at the slower speedof pc2700. Some boards will only allow a certain maximum of ram up to pc3200 speed and then adding any more you will have to run at pc2700 speed. The crucial memory site will be best for advice on memory type allowance and speed.