Can We Use Ddr2 Ram Ddr1 Slot

I bought a new PC, and all the parts arrived today! Awesome!
Except the RAM. It hasn't even shipped yet and won't be here until Monday. :(
In the meantime, would it be possible/advisable to use my old DDR2 800 RAM (4GB) until my shiny new DDR3 shows up? Both are 240 pin, but I wasn't sure if DDR3 slots were backward compatible w/ DDR2. Sometimes they move the little slip on the stick around..
Here's the old RAM:
G.SKILL 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400PHU2-2GBHZ
And here's the new RAM:
Corsair XMS3 8GB (2x4GB) DDR3 1600 MHz (PC3 12800) Desktop Memory (CMX8GX3M2A1600C9)
And in case it matters, here's the motherboard I got:
ASUS Micro ATX DDR3 2600 LGA 1150 Motherboards H97M-E/CSM
I'm formatting and moving over the SSD in my existing PC, so before doing all of that I wanted to make sure the old RAM would work too. Thanks for any help you guys can provide!

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There are different types of RAM available which can be found on memory modules of the same size. Real money slots no deposit bonus usa. There is the old type SDRAM (Synchronous Dynamic Random Access Memory), DDR SDRAM (Double Data Rate SDRAM), DDR2 SDRAM, DDR3 SDRAM, and DDR4 SDRAM is now available. RAM - Comparing Desktop Computer memory modules.

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Can I use 200-pin SO-DIMM DDR2 RAM in a 200-pin SO-DIMM DDR1 RAM slot?

I've done some googling about this, but the only answers I've found are that DDR2 has 240 pins and DDR1 has 184 pins, so it wouldn't physically fit. However, my laptop takes 200-pin SO-DIMM DDR ram, and I couldn't help but notice on Newegg that 1GB of 200-pin SO-DIMM DDR2 ram goes for less than half the price of the same amount of DDR1 ram. Can I buy two sticks of DDR2 ram and save myself a hundred bucks, or do I have to stick with the DDR1?

posted by pravit to Computers & Internet (9 answers total)

Pretty sure it's backwards compatible, yes.
posted by East Manitoba Regional Junior Kabaddi Champion '94 at 7:13 PM on July 2, 2007

From what I can remember, the notches on DDR and DDR2 SODIMMs aren't the same, even though they both have 200 pins, so it wouldn't physically fit.
posted by wsp at 7:15 PM on July 2, 2007

Err, no, DDR2 is an entirely different specification. It is NOT backwards compatiible. Expect to lose a lot of magic smoke and possibly a laptop.
posted by damn dirty ape at 7:20 PM on July 2, 2007

The two run on different power supply voltages. If you did manage to get a DDR2 ram into your DDR slot (and I'd be very surprised to find that they're keyed in a way that makes this physically possible) then your laptop's 2.5V DDR RAM power supply would toast your 1.8V DDR2 RAM.
posted by flabdablet at 7:24 PM on July 2, 2007

Yeah, they're right. There's a physical difference, it won't fit.
posted by East Manitoba Regional Junior Kabaddi Champion '94 at 7:26 PM on July 2, 2007

****NO**** it is NOT possible. It wont fit.
posted by SirStan at 8:20 PM on July 2, 2007

Look, just go ahead and try it, AS LONG AS YOU'RE NOT FORCING ANYTHING.
Odds are even if it doesn't work (which it won't), you won't fry anything. And then you'll know. Won't that be nice?
posted by SlyBevel at 8:45 PM on July 2, 2007

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'Go ahead and try it' means trying to put the round peg in the square hole, the module will physically not insert into the socket.
posted by Rhomboid at 9:04 PM on July 2, 2007

Understood. Guess I have to shell out for the DDR1 memory, then.. Thanks for the answers!
posted by pravit at 9:38 PM on July 2, 2007

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