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Confused by DDR speeds

 
 





















Si
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Posts: n/a

 
      07-23-2003, 11:23 PM


I've emailed HP about adding memory to my Pavilion 733.uk...

This was their response....


----------------------
Dear Simon,

Please refer to the memory specifications of your computer.

Memory Type: DDR

Memory Speed: PC2100/PC1600

Memory Sockets: 2 DDR DIMM (184-pin)

Maximum Memory: 1GB

You can install a total of 1 GB DIMM on your computer. The speed of
the memory should be as stated above.
---------------------

However, I'm confused over the speed issue. Their web site at
http://h20015.www2.hp.com/en/documen...3886#P102_9957

States that it should be 66 MHz/10 ns, 100 MHz/10 ns, or 133 MHz/10 ns .....

As far as I can see, DDR's come in 266MHZ...

I'm a little new to this as you can see....

Help.

Si.


 
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chuckie®
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      07-24-2003, 01:58 AM
In the article that you specified, the 66MHz etc. is referring to the older, slower RAM, not DDR.
Here's what HP says about the DDR for the 733uk:

DDR memory, or Double Data Rate memory, is a memory technology that doubles data throughput to the
processor. This type of memory dramatically improves the memory system's ability to service high
multimedia requirements, such as 3-D graphics.

Key features include:

double the amount of data by using the rising as well as falling edge of the clock signal for data
transfers.
significantly reduced power consumption: 2.5 V instead of 3.3 V.
memory bus runs at the same frequency as the CPU front side bus.
184 pin connection.

DDR 333

throughput of 333 Mb per second.
backward compatible with DDR 200 and DDR 266 devices.

The foregoing is copied directly from an HP site that I have access to, so ignore the slower speed
reference on the page you were looking at, OK?

"Si" <> wrote in message news:bfn1ks$tim$...
> I've emailed HP about adding memory to my Pavilion 733.uk...
>
> This was their response....
>
>
> ----------------------
> Dear Simon,
>
> Please refer to the memory specifications of your computer.
>
> Memory Type: DDR
>
> Memory Speed: PC2100/PC1600
>
> Memory Sockets: 2 DDR DIMM (184-pin)
>
> Maximum Memory: 1GB
>
> You can install a total of 1 GB DIMM on your computer. The speed of
> the memory should be as stated above.
> ---------------------
>
> However, I'm confused over the speed issue. Their web site at
> http://h20015.www2.hp.com/en/documen...3886#P102_9957
>
> States that it should be 66 MHz/10 ns, 100 MHz/10 ns, or 133 MHz/10 ns .....
>
> As far as I can see, DDR's come in 266MHZ...
>
> I'm a little new to this as you can see....
>
> Help.
>
> Si.
>
>



 
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Darrell
Guest
Posts: n/a

 
      07-25-2003, 12:00 AM
Give Crucial.com a try. That's where I bought memory for a HP 325C.
Darrell

"Si" <> wrote in message news:<bfn1ks$tim$>...
> I've emailed HP about adding memory to my Pavilion 733.uk...
>
> This was their response....
>
>
> ----------------------
> Dear Simon,
>
> Please refer to the memory specifications of your computer.
>
> Memory Type: DDR
>
> Memory Speed: PC2100/PC1600
>
> Memory Sockets: 2 DDR DIMM (184-pin)
>
> Maximum Memory: 1GB
>
> You can install a total of 1 GB DIMM on your computer. The speed of
> the memory should be as stated above.
> ---------------------
>
> However, I'm confused over the speed issue. Their web site at
> http://h20015.www2.hp.com/en/documen...3886#P102_9957
>
> States that it should be 66 MHz/10 ns, 100 MHz/10 ns, or 133 MHz/10 ns .....
>
> As far as I can see, DDR's come in 266MHZ...
>
> I'm a little new to this as you can see....
>
> Help.
>
> Si.

 
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