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Will This Ram Be Compatible?


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9 replies to this topic

#1 wogboykon

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Posted 26 May 2007 - 02:56 PM

Well, I'm buying a new computer, and I currently have have 2x DDR-SDRAM 1024MB each, for a total of 2 gigs of ram. But my new ocmputer is going to have 2 x 1Gb DDR2/667MHz Non-ECC Non-Registered Memory Module 1024MB each, for a total of 2 gigs of ram. Do you think I would be able to put both of these int he same motherboard for a total of 4Gigs of ram?

My new motherboard will be Asus P5LD2 Deluxe Wi-Fi P4 775 DDRII, SATAII

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#2 oldf@rt

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Posted 26 May 2007 - 03:22 PM

Based on what you said, you want to use the old DDR ram in the new motherboard that uses DDR2. The slots and keying are different for DDR and DDR2. Not possible.
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#3 T

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Posted 26 May 2007 - 03:22 PM

I doubt you can have ddr2 + ddr running together perfectly, but I'm not sure about that.

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#4 wogboykon

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Posted 26 May 2007 - 03:42 PM

okay, thanks.

#5 wogboykon

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Posted 26 May 2007 - 03:49 PM

So if I buy the two Gb DDR2/667MHz Non-ECC Ram sticks, then I buy 2 1024MB PC-5400 DDR2 667MHz Ram sticks, you think those 4 will be compatible and be able to run at 4 gigs?

#6 oldf@rt

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Posted 26 May 2007 - 04:26 PM

The max ram supported by this mainboard is 4 g at 667Mhz, so four one gig pieces will work. what OS you will be using determines if all can be used a 32 bit os will only use about 3.5 gig of the four.
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#7 wogboykon

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Posted 26 May 2007 - 04:27 PM

so Just Windows XP Prof will only use 3.5 gigs?

#8 oldf@rt

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Posted 26 May 2007 - 07:51 PM

32 bit version will use up to 4 gig, 64 bit version can use up to 128 Gig of ram.
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#9 usasma

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Posted 27 May 2007 - 08:23 AM

The 32 bit versions of XP and Vista will only recognize 4gB of addressable memory space - in short, this means that they won't show the full 4 gB on your system (I did it and ended up with 3.25 gB showing - both in XP and in Vista).

I don't know if there's a performance penalty for this (didn't see anything significant on my system) tho' - so YMMV (Your Mileage May Vary) :thumbsup:
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#10 DaChew

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Posted 27 May 2007 - 08:34 AM

The 32 bit versions of XP and Vista will only recognize 4gB of addressable memory space - in short, this means that they won't show the full 4 gB on your system (I did it and ended up with 3.25 gB showing - both in XP and in Vista).

I don't know if there's a performance penalty for this (didn't see anything significant on my system) tho' - so YMMV (Your Mileage May Vary) :thumbsup:



that's physical ram plus swap file

no point in going over 2 gigs in an average system with windows xp

getting the faster ram would make more sense, if you upgrade to vista and add another 2 gigs and your mobo supports
4 sticks of faster ram?
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