What RAM should I buy 800MHz/1066MHz?

rog02

Distinguished
Dec 5, 2011
61
0
18,640
Hello Guys,

I am looking to upgrade my RAM.
Current RAM is 2 x DDR2-667MHz-1GB and going to upgrade to 4GB.

But I am confused, which will suit to my system.
System is Dell Precision Workstation T3400.
Processor: Core 2 Duo E8400 3.0 GHZ.
Motherboard: Dell (I couldn't find motherboard number).

Things that are making confusion:
1) Processor FSB:
It says 1333 FSB. Does it have anything to do with RAM speed?

2) Mohterboard memory clock:
It says 667/800

3) Motherboard system clock:
It says 800/1066/1333

4) Checked on crucials.com for supported RAM for my machine:
It says 667/800/1066

I dont know what the clock is and how one clock differs from other.
 
Solution
If the board says it will run 800, then pc6400 should work. But don't expect that much difference performance wise. Don't pay more for it over pc5300. I still recommend you match the brand and speed, unless you buy it locally so you can exchange it. Frys has a 15 day return policy with no restocking fees, but their stores are mostly in the west southwest and atlanta areas. Microcenter may have a similar return policy, but check with them first.
I would go with crucial, or pull one stick and check the brand and actual speed on the label. Upgrading ram means simply adding more; no point in paying for performance ram as the dell has no ram adjustments in the bios. You can use up to 2 gb per slot for a total of 8 gb. Mixing ram brands or speeds may not work, so checking the current label may save you from having to return it.
 

rog02

Distinguished
Dec 5, 2011
61
0
18,640
Current Ram is Samsung 667 MHz. I want to upgrade to higher MHz if that can add to performance. Mostly I use computer for gaming so increase in RAM speed might help. Also I will not mix Ram with mixed speeds, as alll will run at speed of lowest RAM inserted.
 
If the board says it will run 800, then pc6400 should work. But don't expect that much difference performance wise. Don't pay more for it over pc5300. I still recommend you match the brand and speed, unless you buy it locally so you can exchange it. Frys has a 15 day return policy with no restocking fees, but their stores are mostly in the west southwest and atlanta areas. Microcenter may have a similar return policy, but check with them first.
 
Solution