Can I mix these modules?

[lukelc1]

Hi Can I mix these memory modules?

I have Corsair Dominator 1066mhz DDR2 (2Gb worth in 2 modules.)
And ive found out I have a spare 2GB single stick of unbranded ram.
So is it worth putting in this extra 2GB stick of unbranded ram (tested and working) will it increase the performance bringing the system up to a total of 4Gb ram. Or will it the render system slightly unstable, I'm not entirely sure how it all works.

Will it automatically set the timing of the corsair ram to the unbranded ram Jdec profile? and if so is that a good option an extra 2Gb ram but slightly lower timing's?
The voltage and Mhz are exactly the same on both of them. Will it damage the the corsair ram? More information bellow.


Corsair

Jdec 400mhz ( tThe system currently runs at the Jdec profile )

5
5
5
18
23
1.8v

Unbranded

Jdec 400mhz

6
6
6
18
24
1.8v


Corsair also has an EPP profile (512mhz) Ive never figured out how to use it.
5
5
5
15
22
2.1v

 

[o1die]

Normally, if you mix ram, the board will select the slower timings of the two. Check your motherboard manual for recommended configurations. The manual should list all possible configurations on a chart. It's possible the board will only recognize 1 gb of the 2 gb stick. I honestly don't know if it will damage the other ram. I don't see how, since they're both the same voltage.

 

[lukelc1]

Ive had a look at the board manual not much help did say that they have to be matched in pairs to use in dual channel mode.
I have 2, 1GB sticks of corsair dominator ram and 1, 2gb stick of unbranded ram.

any more help guys?