mixing diferent mhz of ddram

[max_p_4444]

is it possible to mix both 266mhz(264mb) and 333mhz(512mb) together on a dell gx 260?

 

[Praetor]

Yes. By default they will both run at 266MHz (btw the stuck is 256MB) although you might be able to upclock both of them to 333MHz. not a big jump (only 33MHz)

 

[4W4K3]

i believe they will also lower to your loosest timings of the 2 RAM's, and the most voltage of the 2...might be wrong about the voltage though.

 

[Praetor]

You mean tightest right? (slower badnwidth = tighter timings usually)

 

[4W4K3]

You mean tightest right? (slower badnwidth = tighter timings usually)

ah yah...that does make sense. i guess that really depends on what the board thinks the RAM can run at. if it tries to make 2.5-3-3-7 run at 2-3-2-5...it might not boot at all. gotta find a common timing for the both of them manually if it doesn't boot i guess. never had that problem though...

 

[Praetor]

if it tries to make 2.5-3-3-7 run at 2-3-2-5...it might not boot at all

I took 3-5-5-10 down to 2.5-3-2-5 but i dont think thats a normal result heehee

 

[4W4K3]

I took 3-5-5-10 down to 2.5-3-2-5 but i dont think thats a normal result heehee

lol i dont think so either. some RAM is really picky about timings, looks like you just got really flexible chips lucky.

 

[Praetor]

Very ... i find that im often pleasently surprised by some of the cheap RAM i find

 

[max_p_4444]

is kingston a flexible ram? if not just overcloking the 266mhz to 333mhz would work fine right?

 

[Praetor]

Kingston makes a whole bunch of different grades of RAM (just like all makes) ... an OC from 266MHz to 333MHz is only 33MHz ... shouldnt be a big deal regardless so you should be fine... if you notice your computer rebooting a lot then try upping the Vdimm by 0.1v although you shouldnt have to

 

[max_p_4444]

thanks for all of your help i'll try it and if it doesnt work (and for some reason can't return it) i'll just remove the 256mb and keep 512mb

 

[Praetor]

266 over clocked to 333 = 299 Mhz ?! And, 333 - 266 = 67

DDR266 runs at 133MHz. DDR333 runs at 166MHz ... naturally ... 166MHz -133MHz = 33MHz

 

[Greg J.]

Sorry, I thought you were still on Mhz.

I understand now.

 

[Praetor]

Sorry, I thought you were still on Mhz.

I was. Notice that i wrote DDR266 rather than 266MHz (alternatively i could have written 133MHz[266DDR])