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DDR2 got my head spinnin

post #1 of 10
Thread Starter 
I just purchased some new hardware (motherboard, gpu, memory) and have what I hope is a fairly simple question. On my current rig (P4 650, Abit AS8, PC3200 DDR) the FSB is at 200MHz, hence the PC3200 memory. I am keeping my current P4 650, but snagged an Asus P5LD2 with 2gb of g.skill pc2-5400 sticks. The memory is rated at 667, but with the FSB still at 200 for the processor, does the memory in fact run at 667, or is this just what it is rated up to for overclocking?
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post #2 of 10
the memory will run at what your FSB is set to. The 667 means it can go up to that point and it's guaranteed to work.
post #3 of 10
Thread Starter 
Thanks, I was thinking along those lines but just wasn't quite sure.
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post #4 of 10
Quote:
Originally Posted by darklink
I just purchased some new hardware (motherboard, gpu, memory) and have what I hope is a fairly simple question. On my current rig (P4 650, Abit AS8, PC3200 DDR) the FSB is at 200MHz, hence the PC3200 memory. I am keeping my current P4 650, but snagged an Asus P5LD2 with 2gb of g.skill pc2-5400 sticks. The memory is rated at 667, but with the FSB still at 200 for the processor, does the memory in fact run at 667, or is this just what it is rated up to for overclocking?
delete
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post #5 of 10
Quote:
Originally Posted by sccr64472
It won't work and wouldn't even fit in the sockets. Your motherboard and cpu use DDR and your new purchase is DDR2. It's a different size and voltage. Btw, that DDR2 operates at 167 mhz at stock speed.
Edit: Sorry, just noticed that you purchased a new board as well. That board won't work with your cpu, though.
Sorry but you are unfortunately incorrect. That motherboard will work perfectly fine and the DDR2- 667 will run guarenteed up to 233.5mhz(FSB) it should default to 1:1 with CPU(FSB) and you can go into the BIOS to make it run at DDR2-667 which i believe is a 2:3 ratio (which is perfectly fine. If you however leave it at 1:1 that will give you more headroom for OC'ing.
    
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post #6 of 10
Quote:
Originally Posted by cowboyzkickazz
Sorry but you are unfortunately incorrect. That motherboard will work perfectly fine and the DDR2- 667 will run guarenteed up to 233.5mhz(FSB) it should default to 1:1 with CPU(FSB) and you can go into the BIOS to make it run at DDR2-667 which i believe is a 2:3 ratio (which is perfectly fine. If you however leave it at 1:1 that will give you more headroom for OC'ing.
I know, it was deleted before you posted
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post #7 of 10
musta been while i was typing that u dlt'd lol but yeah i see that now... anyways the memory is good you should be able to OC pretty far link and i checked i'm running my memory at 4-4-4-10 DDR2-675 2.15v its a 4:5 ratio at its real nice. I might up the vdimm to 2.2 and try for a 2:3 ratio later but as you see DDR2 is very good for OC IMO at least lol...
    
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post #8 of 10
Thread Starter 
Thanks much guys. I just received all my new equipment today and cannot wait to get out of work so I can go home and play around.
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post #9 of 10
The optimal speed for memory is the same speed as your FSB.
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post #10 of 10
When you drop it in and stick it to a 1:1 ratio it will run at DDR2 400 so you can really tighten up those timings and go easy on the vDimm voltage, however if you want to run it at DDR2 667 all you have to do is set a divider (2:3 should be DDR2 600, your mobo probably has a specific one for DDR2 667) and be sure to set the timings and voltage to whatever its rated for at 667! There is no performance advantage to running it at 667 though other than added, but unneeded, bandwidth.
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