Sorry soooo late to the discussion. I too am fairly new to A/D (less than 2 months). Now have you solved your prob? Mine came with 512MB (2x256) and then added 1GB (2x512). Your board does support upto 1.5GB. You do have to install in pairs, which is why you got 2 256 modules. The ones in the other slots (RIMMS) are called continuity modules. These are needed when using RDRAM. Just remove them and put your 256's in its place, then reboot and check your system hardware it should read 1.5GB of ram.
Also I tried a Dell 8300, 800MHz FSB.. upgraded to 2GB of ddr ram. It didn't come close to speed and performance of an 8250 with 512MB of RDRAM. Although RDRAM is so expensive.. it's worth it.
Quote:Ok back to the topic, anyone know what the speed on those RIMMS are?
our FSB is 533MHz, They explain our speed of our RIMM's as pc1066(at least for our model)
And don't let DELL fool you. I think they make great computers, but their tech support sucks!! And its a simple thing of language barrier. I will only talk to the call center in the US and not India. And nothing against India... It's just they don't communicate with us here in the US as well.
You were close RDRAM goes up to pc1200. And as far as speed Rambus RIMM modules operate at a maximum frequency of 400MHz and use clock doubling to allow for 800MHz performance.
I ran the pin # threw Samsung semi conductor site. Ours are 1066. I popped in 2 more 256 modules. Wow what a difference. I didn?t have the scratch($) to get the 2x512. Wow what a difference. Thanx for the info : )
