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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 9/23/2005 5:40:18 AM EDT
I'm currently running 1GB (512MBx2) Corsair XMS SDRAM DDR 466 (PC 3700) on an ASUS PC4C800-E Deluxe.


My question is can I run a different speed of memory (DDR 400, 500 or 550) in the other 2 slots?
Link Posted: 9/23/2005 5:43:42 AM EDT

Originally Posted By Blue_Monkey:
I'm currently running 1GB (512MBx2) Corsair XMS SDRAM DDR 466 (PC 3700) on an ASUS PC4C800-E Deluxe.


My question is can I run a different speed of memory (DDR 400, 500 or 550) in the other 2 slots?



You can buy faster memory, but it will not run any faster than your motherboard's BUS speed. Motherboards have the same BUS speed for all memory slots.

So you can buy the faster rated memory, but it will run at the same speed as your other memory chips.
Link Posted: 9/23/2005 5:50:15 AM EDT
You sure can. I've got some PC4400 for sale if you want some. Corsair CMX512-4400C25PT.

These: www.newegg.com/Product/Product.asp?Item=N82E16820145551. Make me an offer.
Link Posted: 9/23/2005 5:51:14 AM EDT
Thanks, I was just going to put the same stuff (PC-3700) in but it doesn't seem to be as available anymore.
Link Posted: 9/23/2005 6:00:03 AM EDT
if you do decide to upgrade your ram i would get the same speed or higher(so in this case 3700 or higher) I would try to get the same named brand memory and the same CL speed, definition link
othe wise it could lead to system instability
Link Posted: 9/23/2005 6:09:29 AM EDT
Rule of thumb is to match memory.

If you are running a MB that uses dual channel memory
(one or more paired DIMMs), you HAVE to use matched
memory in order to take advantage of the performance
increase.
Link Posted: 9/23/2005 6:15:37 AM EDT

Originally Posted By cruze5:
if you do decide to upgrade your ram i would get the same speed or higher(so in this case 3700 or higher) I would try to get the same named brand memory and the same CL speed, definition link
othe wise it could lead to system instability



Most recently produced memory chips (in the last 4 years or so) are perfectly happy running at a lower clock speed.

In the old days with all the different types of memory matching brand and so forth was important, but today things are pretty much standardized so that it is less of a concern.

Link Posted: 9/23/2005 7:37:30 AM EDT
My children & I built a comptuer on a MSI mother board, and right in the insturction manual it says that you can use two different memory speeds but the systems will operate only on the slowest one.
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