Weird RAM Problems with my Dual G5??!!

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Lucky_Penguin

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Hello Hello
Well I recently bought a dual G5 and I just purchased the base model Dual
2GHZ that came with 512mb (2x256mb) of ram. Anyhow I recently purchased some Corsair Valu Select ram from Newegg which came in a 2x 512mb package.
So I installed them and my G5 says that I only have 1GB of Ram instead
of the 1.5 GB that I should have. I looked in the system profiler and it
says this in the memory section
DIMM0 - 256 MB DDR SDRAM
DIMM1 - 256 MB DDR SDRAM
DIMM2 - 256 MB DDR SDRAM
DIMM3 - 256 MB DDR SDRAM

I installed the 2 512mb sticks on DIMM 0 and DIMM 1.
But for some reason they are registering only 256mb.
Now I checked the box and it says they are 512mb each, i check
the label on the sticks and they say 512mb each and I also check
to make sure that it had the 8 32mb chips on each side of each stick
to maked 512mb on each stick.

Now, i also tried to have JUST the 2 Corsair 512mb sticks in the system without
the factory 256mb sticks and it did not even want to boot up.
Then I tried just the 2 Corsair 512mb sticks with one of the 256mb factory
sticks and it booted up but said I only had 512mb installed.
Its almost like if I dont have at least one of the 256mb factory sticks in there
it does not even want to boot up.

Here is the ram I got on newegg
http://www.newegg.com/Product/Product.asp?Item=N82E16820145440

There is even reviews from people who have used it in their G5s and it worked.
Maybe im doing something wrong, someone please give me some advice.
Thanks
 
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