My impression is that the 790i Ultra board would do up to DDR3-2000 at 8GB Ram (4 x 2GB)?

Gruffly78,

Nope. This is the supported memory in the XPS 730.
DDR3-1066 133MHz PC3-8500 1.50V VDIMM
DDR3-1333 166MHz PC3-10600 1.50V VDIMM
Corsair Dominator DDR3-1800MHz at latencies of 8-8-8-24 at 1.85V VDIMM (CM3X1024-1800C8D)

Perhaps you were looking at the retail 790i Ultra SLI specifications?

Chris-M 

 

Yep, was looking at the retail version of the board...  I've heard that the Dell versions of the Nvidia boards (mobo and gfx) are exact copies of the nvidia prototypes.  Anyone know for sure?

 

Kinda wondering if specs you posted are the "officially tested and supported" or is the Dell board capped for some reason?  Is there a technical reason?

 

http://www.nvidia.com/object/nforce_790i_ultra_sli.html

 

 

 

 

Does that mean I can use the 8GB of DDR3-1333 I already have?  If not, where do I find 1066 RAM.  All I can find is 1067.

 

 

Thanks,

Chris_M,

 

That's not the only memory supported, I too agree it's an exact copy of a retail 790i board.

 

I'm running - OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600, its running at stock 7-7-7-24-2T @ 1.9V

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16820227297

 

Flawlessly, memtest86 passes 100%, no crashes, prime95 stable.

 

If anyone is interested in this memory and you buy it, just remember to set the voltage of your new ram with the old ram still in there, then save to BIOS/CMOS and exit, and put the new ram in, that way it will boot and u can change timings and all that, as it defaults to 1.5V and won't boot, you'll get a error followed by a beep.