Solved upgrading existing 512 mb SDR RAM by adding DDR ram

September 12, 2012 at 06:11:54
Specs: Windows XP, RAM
I use p4 desk top I want to upgrade CPU . Can I increase ram by adding DDR to the existing 512 MB SDR RAM?

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#1
September 12, 2012 at 06:22:29
Go to crucial.com and use their online configurator to learn what type and how much RAM you can add.

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#2
September 12, 2012 at 07:12:43
✔ Best Answer
SDR-SDRAM & DDR-SDRAM are physically different. SDR has 168-pins & 2 notches, DDR has 184 pins & a single notch, therefore if your motherboard only has SDR slots, you can only use SDR-SDRAM. If you post the make/model of your board, someone should be able to suggest what to use. But being that SDR is very outdated (which means your entire system is very outdated), most will probably recommend a major rebuild or a completely new (or newer) system.

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#3
September 12, 2012 at 07:53:53
Early P4 boards used SDR and socket 423, increase the memory and install a video card & leave CPU alone.

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#4
September 12, 2012 at 09:42:48
Back in 2001-2002, there were a few boards (usually VIA based) that supported both types of RAM, although not at the same time. If a dual memory board is what you actually have, I strongly recommend you take all of the SDR memory out and purchase more DDR. The P4 took one heck of a performance hit with SDR memory (as if the early P4s weren't slow enough).

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