Can I Install Different Memory in Same Motherboard GA-X58A-UD3R?

I have the Gigabyte GA-X58A-UD3R motherboard running Intel i7-930. It currently has 3GB memory from Crucial. I'm thinking of adding another 6GB from G.Skill? Different speed but appears to be same voltage and CAS. Will this work or do I need to ditch my Crucial 3GB and only use the G.Skill 6GB. Naturally, I'd like to have 9GB in total.

Currently have:

Gigabyte GA-X58A-UD3R
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128423

Crucial 3GB (3 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148245


Want to buy this 6GB kit from G.Skill:

G.SKILL 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231225

Will this work?
4 answers Last reply
More about install memory motherboard x58a ud3r
  1. Yes, you can do it. They will run at the speed of the slowest one.
  2. When last I saw an article about how much memory todays applications use, which was about 6 months ago, it said very few applications, even with multi-tasking, can make use of 3 GB or more. Are you using any applications can will make good use of more than 6 GB?

    If not, I think it is most likely that you will get the best performance out of 6 GB at the faster speed, rather than mixing it with the Crucial memory and have it all step down to the slower speed. However their might be some advantage to having the second set of channels so you might want to test it both ways.
  3. Henry & rockyjohn > Tks for the comments!

    I've seen my memory usage reaches 90+% at times, hence, my need to increase memory. (Generally have Outlook, Firefox, Photoshop, Excel, Dreamweaver, iTunes, and a number of smaller apps such as Skype, Ultramon for 3 x Dell U2410 monitors all running at the same time).

    Next question - since theoretically I can run both Crucial and G.Skill at the same time, how much a performance hit in real world experience will I take since it takes the speed of the slowest one?... ie. 5%, 10% or will I even notice it? I can accept 5% hit, but if it's 10+%, I'll just stick with 6GB G.Skill and toss the Crucial.
  4. kobebeef said:
    Henry & rockyjohn > Tks for the comments!

    I've seen my memory usage reaches 90+% at times, hence, my need to increase memory. (Generally have Outlook, Firefox, Photoshop, Excel, Dreamweaver, iTunes, and a number of smaller apps such as Skype, Ultramon for 3 x Dell U2410 monitors all running at the same time).

    Next question - since theoretically I can run both Crucial and G.Skill at the same time, how much a performance hit in real world experience will I take since it takes the speed of the slowest one?... ie. 5%, 10% or will I even notice it? I can accept 5% hit, but if it's 10+%, I'll just stick with 6GB G.Skill and toss the Crucial.


    You should read this interesting article.
    http://techgage.com/article/intel_core_i7_-_choosing_the_best_memory_kit/1
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