You will be better off if you order from Crucial.  Better prices and excellent memory.  Use their on-line configurator.  You can get there from here

To answer your original question, memory speed works out like this:

PC2100 = DDR 266

PC2700 = DDR 333

PC3200 = DDR 400

But I agree that you ought to check out Crucial.  High quality at (usually) substantially lower prices.

CB

George W,

You're better off buying your memory from Crucial, I've used their memory for several years with no problems, the memory I've purchased from other vendors, has been at times problematic.

Bev. 

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@George W. wrote:

I want to add 256 megs of memory to this PC, which came with 256MB 333MHz DDR SDRAM. The processor is a 2.53 GHz P4. Did a memory search for 4550 and came up with "256 MB Module for a Dell Dimension 4550 (533 MHz side bus". The speed is PC2700. Dell part # A0086363. I THINK this is the right module but I just want to make sure before I order. I didn't see 333MHz mentioned in the description. Is that just a given with the 2700 speed? I'd like to make sure I get the right match.

Thanks.

With the current price of memory lower than it has been, I'd recommend that you add a 512mb stick - $69.99 at Crucial, lower than it's been in a long time.  If you add 256, when you want more one of the sticks has to go.  By adding 512 you're maxed out in the one slot.  To configure memory for your computer, click here for Crucial's memory configurator. Crucial is a division of Micron, one of the largest manufacturers of memory and a supplier of Dell's. Memory selected via their configurator is guaranteed to fit, and all memory has a lifetime warranty - plus they provide priority shipping at no additional cost for most orders. There is NO impact to your Dell warranty by adding Crucial memory (or other hardware or software for that matter).

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@caddellwr wrote:

Rick,

That makes twice in the last 2 days that you have cut in front of my post to say the same thing I already did.  What gives?

Ralph:

I added after your post, and I recommend that he add 512mb, not 256.  No harm meant.  Sorry if it bothered you.

Message Edited by rickmktg on 06-15-2003 06:10 PM

Thanks for all the replies. I'll check with Crucial. One more question: Can I mix a 512 MB memory module with a 256 MB one? I have two slots on this PC, which is new, and currently have the 256 in one.

Thanks.

Rick,

That makes twice in the last 2 days that you have cut in front of my post to say the same thing I already did.  What gives?

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caddellwr wrote: What gives?

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The unrelenting lure of the Almighty Dollar, perhaps?

First PC Owned: Who Cares?

My Memory Link - Look here for memory!
 

George W.

Yes, you can install a 512MB module with the exsisting 256MB one,  it will give you a total of 768MB.

Bev. 

Just a heads up for anyone looking for memory. Crucial has $25 off on some 512MB Ram with the proper coupon code. I'm not sure how long this will last but I just ordered some PC2700 specifically for my 4550 (533). $69.99 price dropped to $47.69 including free 2-day shipping. Would have been less (about $45) but I live in a state where I had to pay sales tax.

Go here: http://www.slickdeals.net/ 

Scroll down to the Crucial 512 MB PC2700 link. Follow the link. When you get to Crucial you'll see the code.You can ignore the part number Slickdeals supplied and use the configurator to select the make/model. The $25 was deducted at checkout. The part number for the 4550/533 PC2700 Ram was CT289645.

G.