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DDR2-800 on a GA-P35-DS3

post #1 of 4
Thread Starter 
I have an old computer on which I want to overclock the CPU. After looking at the data in CPU-Z and the BIOS, I've noticed that my RAM runs at a frequency of 333 MHz with a 1:1 FSB:DRAM-ratio. My understanding is that DDR2-800 should be able to run at 400 MHz, but when I try upping the FSB (still 1:1) to 400 MHz or changing the SPD from 2.0 to 2.4 (which I assume would make the RAM run at 400 MHz as well?), the computer fails to boot. Is my RAM so slow that it doesn't allow me to overclock my CPU or am I doing something wrong? Also, am I correct in assuming that it should be able to run at 400 MHz?

If it's of any help, here's the data shown in the memory-tab of CPU-Z:

392
post #2 of 4
ddr2-800 doesnt HAVE to run at 400, theres not much difference honestly.

i have my ram running at about 380-390 because with my setup its hard to get a high stable FSB.

what cpu you have? prehaps it cannot take a 400 fsb.

also i am not sure about GA-P35-DS3 mobo capabilities, maybe it cannot take a 400 fsb as well?


my 2 cents.
post #3 of 4
Thread Starter 
Quote:
Originally Posted by DF is BUSY View Post

ddr2-800 doesnt HAVE to run at 400, theres not much difference honestly.
i have my ram running at about 380-390 because with my setup its hard to get a high stable FSB.
what cpu you have? prehaps it cannot take a 400 fsb.
also i am not sure about GA-P35-DS3 mobo capabilities, maybe it cannot take a 400 fsb as well?
my 2 cents.
Thanks for the input! I have a Core 2 Duo E6750 (2.667 GHz). I'm not sure how to read the maximum FSB speed for the motherboard, because http://www.gigabyte.com/products/product-page.aspx?pid=2748#sp lists "1600 (O.C.)/1333/1066/800 MHz FSB".
post #4 of 4
Quote:
Originally Posted by pebermix View Post

Thanks for the input! I have a Core 2 Duo E6750 (2.667 GHz). I'm not sure how to read the maximum FSB speed for the motherboard, because http://www.gigabyte.com/products/product-page.aspx?pid=2748#sp lists "1600 (O.C.)/1333/1066/800 MHz FSB".


it means you can have the fsb running at 800-1600, but having it at "1600" would be considered "overclocking" your fsb already.
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