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Old 02-02-2008, 07:34 PM   #1
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Default Question about memory? (It's not hard)

OK I was wondering...I have a computer with a 512 ddr RAM installed and it has an extra RAM slot...I was wondering if it's possible to install a ddr 2 into that extra slot? Will the two memory cards be compatible. Could it hurt my computer at all to try it anyways? Like if I put it in and it doesn't work can't I just take it right back out with no side affects?
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Old 02-02-2008, 07:38 PM   #2
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Default Re: Question about memory? (It's not hard)

No. You can only use DDR on that motherboard.

DDR has 184 pins whereas DDR2 has 240 pins. They are not interchangeable.
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Old 02-02-2008, 07:43 PM   #3
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Default Re: Question about memory? (It's not hard)

Ok Well Can I take memory out of this computer...http://www.shopping.hp.com/shopping/...t/pj467aa.html
and put it into this computer ?http://h10025.www1.hp.com/ewfrf/wc/d...dlc=en&lang=en
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Old 02-02-2008, 08:23 PM   #4
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Default Re: Question about memory? (It's not hard)

Yes, they are both 184-pin DDR RAM sticks. Make sure they are at the same speed though.
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Old 02-02-2008, 08:24 PM   #5
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Default Re: Question about memory? (It's not hard)

Yes. They both use 184 pin DDR modules.
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Old 02-02-2008, 10:01 PM   #6
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Default Re: Question about memory? (It's not hard)

Quote:
Originally Posted by Thelis View Post
Yes, they are both 184-pin DDR RAM sticks. Make sure they are at the same speed though.
Would it work if they were different speeds?
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Old 02-02-2008, 10:38 PM   #7
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Default Re: Question about memory? (It's not hard)

Quote:
Originally Posted by Thelis View Post
Yes, they are both 184-pin DDR RAM sticks. Make sure they are at the same speed though.
Quote:
Originally Posted by Atomic Rooster View Post
Yes. They both use 184 pin DDR modules.
Negative. It will not work. While they are both 184 pin, one is pc133 which has a different keying compared to what we now know as standard DDR.
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Old 02-02-2008, 10:46 PM   #8
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Default Re: Question about memory? (It's not hard)

Celegorm -
The HP Pavilion a345w supports PC2100/PC1600 DDR memory. Here are the motherboard specs from HP.

Besides PC133 is 168 pin.

They will work. Hopefully they are of the PC2100 variety and not PC1600.
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Old 02-02-2008, 10:51 PM   #9
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Default Re: Question about memory? (It's not hard)

That's just weird. I look at the page he gave us and it shows PC133, yet the link you gave (which I did see on the one he gave) mentions a completely different RAM style. I wonder which is right...
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Old 02-02-2008, 10:57 PM   #10
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Default Re: Question about memory? (It's not hard)

I think it was worded that way as PC2100 runs on a 133MHz bus.
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