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will ddr2 800/1066 work in a ddr2 1200 mobo??

  • Memory
  • DDR2
  • Asus
  • Gigabyte
  • Product
Last response: in Memory
October 20, 2008 9:26:55 PM

hi, im buying a new mobo, narrower it down to two boards. either a

GIGABYTE GA-EP45-DS3R link here-------->

or a ASUS P5Q Pro LGA 775 link here---------->

and i noticed that they have a ddr2 1200 standard. im looking to get 4 gigs(2x2GBs) but the only ddr2 (2x2GBs)1200 that i can find is over $200. will ddr2 800 or 1066 work in either of these mobos?? and if so is 1066 that better than 800?? thanks everyone.

More about : ddr2 800 1066 work ddr2 1200 mobo

October 20, 2008 9:35:33 PM

Yes it will work. It just means the motherboard will officially support UP TO ddr2-1200.

If you are overclocking, ddr2-1066 gives you a guarantee of 1066 for overclocks, but if you are not overclocking just stick with high quality, lo latency, ddr2-800.
a b Ĉ ASUS
a b } Memory
October 20, 2008 9:37:09 PM

Yes the ram will work... if you plan on doing a HIGH overclock... like close to 500 FSB... you'll want the 1066 ram if not than the 800 ram is fine
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October 20, 2008 10:04:25 PM

well i dont overclock so i guess il stick with the ddr2 800. thanks guys
October 20, 2008 11:56:21 PM

yah i have the gigabyte X48 ds3 and it runs ddr2 1200. however, my memory is clocked at 1066 you will be just fine
a b } Memory
a b Ĉ ASUS
October 21, 2008 5:54:30 PM

Your DDR2-800 is a good Buy. Not sure which proc you are looking at But,

With a Bus @ 333 the 667 DDr2 will work at a 1::1 ratio.

I like the 800 @ CAS 4:
If you decide to overclock (very easy on dual/Quad intel core), You can set the Bus to 400 and Have a Dram ratio of 1::1 (FSB = 1600) and with a Proc multiplier of 8 gets you a bump to 3.2 Gigs.

If you do not want to Overclock, You can still set the Bus to 400 and use a lower X (ie 6 x 400 = 2.4 Gigs, or 7 x 400 for 2.8 GHz)

I have the "OLD" gigabyte P964-DQ6 (My 1st OC) and I simply set the Bus to 400 and 8X and memory to 1::1. The only other thing was that I changed my DIMM voltage to 2.05 (Manf spec for Mushkins DDR2-800 CL4) Which I would have done even without overclocking.