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April 5th, 2006 22:00

Dimension 8250 RAM Question

My computer is approx 2-3 years old. It has 512 mb of rdram with 533 front side bus. I'm interested in buying 512 more ram. On ebay, Someone is offering PC800 rdram, stating that its for front side bus of 533 mhz or slower. If new at this: The seller states it will work in my machine. Does anyone know for sure, if adding Pc800 to my system will work?

373 Posts

April 5th, 2006 22:00

Dependent upon the speed of your ram you are presently running, PC800 or PC1066 can be run in your machine these are thespecs for the 8250:

Memory

Type

PC800 or PC1066 RDRAM (non-ECC)

Memory connectors

four

Memory capacities

64-, 128-, 256-, and 512-MB non-ECC

Minimum memory

128 MB

Maximum memory

2 GB for PC800
1.5 GB for PC1066

Memory type

PC 1066 (non-ECC) only on computers with a 533-MHz system clock speed

PC 800 (non-ECC) on computers with either a 400- or a 533-MHz system clock speed

Memory speed

 

PC800

40 ns or faster

PC1066

32 ns or faster

BIOS address

F8000h

 

For price comparison this is what is offered at zzf for 1066 http://www.zipzoomfly.com/jsp/ProductList.jsp?ThirdCategoryCode=011121

and for the 800 http://www.zipzoomfly.com/jsp/ProductList.jsp?ThirdCategoryCode=011107

Note the ns speeds for either type as they are what has to be run in these Dell machines.

                                                                                                  Jd

9 Legend

 • 

87.5K Posts

April 6th, 2006 00:00

Adding PC800 to the default PC1066 isn't supported and may not work.

You should use PC1066 RAM.
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