question about RAM modules

[KerbMav]

Can I use my old (I had two 2GB kits, one of the four modules died) 2.1V 1066 RAM and my new 1.85V 800 RAM together?

I am asking because I am unsure if I can run the 2.1V modules at 1.85V - they have been working at FSB800 for years, so that should not be a problem.

I can pair them correctly and my board accepts up to 8GB.

Corsair XMS2 Dominator DIMM Kit 2GB, DDR2-1066, CL5-5-5-15 (TWIN2X2048-8500C5D) 2.1V

Kingston HyperX blu. DIMM Kit 4GB, DDR2-800, CL5-5-5-15 (KHX6400D2B1K2/4G) 1.85V

ASUS P5K/EPU (90-MBB67A-G0EAY00Z)

Edited August 13, 2014 by KerbMav
specifying question

[rtxoff]

As far as i know it should be possible to use both of them. Have a look at your motherboard manual to see how the RAM slots are color coded and which ones should build a pair.

[cantab]

I would expect so. The standard voltage is 1.8V, so I doubt you'd encounter memory that won't operate correctly at it.

[Seret]

Assuming the board recognises them it will run them both at the lower frequency.