Mobo 2 DDR3 dual channel slot, can I use only one RAM module?

[Peroxyde]

Hi,

Mother board: ASRock Z68M/USB3 Socket 1155 Intel Z68
http://www.asrock.com/mb/overview.asp?Model=Z68M/USB3

RAM: Mushkin Silverline 8GB (2x4GB) DDR3 1333MHz CL9
http://www.mushkin.com/Memory/Silverline/996770.aspx

Is it OK to use only ONE module of RAM? Reason: assemble two computers. For cusual web/office usage. 4 GB of RAM would be enough. As there is a sale at my local computer store on the 2x4GB modules above. I wonder if I can split that RAM kit to fit both computers.

In case this works OK, are there any adverse effects for doing so?

Thanks in advance for any advice.

 

[jjmIII]

In case this works OK, are there any adverse effects for doing so?

Perfectly OK. It will run in single-channel mode instead of dual-channel mode though. It will cost a small amount of performance in other words.

 

[Peroxyde]

Perfectly OK. It will run in single-channel mode instead of dual-channel mode though. It will cost a small amount of performance in other words.

Thanks very much for your help.

EDIT: was about to ask you some high level technical info as why dual channel can run in single mode. But got the explanation here: http://www.devhardware.com/c/a/Memory/Dual-Channel

This article shows that the performance loss in single-channel in the real world is less than 5%. This should be acceptable for the computers I am preparing.