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Need to expand my desktop memory

My PC already have two ram of corsair with part no. CMX4GX3M1A1600C11. This says that my ram is 4gb and runs at 1600mhz but CPU-z shows that it is running @ 668mhz which is 1333MHz and with this dual channel ram in my pc can i expand my memory with this dual channel ram with part no. CMD16GX3M2A1866C9 which will make my pc ram of 24Gb.

Thanking you in advance and sorry for my bad english


My PC Spec:
Core i5-3570k
Asus P8Z77-v Mobo
8Gb Corsair Ram (4gb*2)
600W VIP Power Supply.
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  1. Best answer
    Your board may not run smoothly by mixing ram. I recommend you sell your 8 gb corsair ram and get a 2x8 gb kit for around $85-87 (current pricing newegg). But don't expect a big performance improvement; it all depends on what you use your system for. I downgraded from 16 gb to 8 gb and didn't notice much difference.
  2. thanks for ur reply o1die.

    so this means i cannot upgrade my ram if it has mismatch mhz or different gbs, right?
  3. o1die said:
    Your board may not run smoothly by mixing ram. I recommend you sell your 8 gb corsair ram and get a 2x8 gb kit for around $85-87 (current pricing newegg). But don't expect a big performance improvement; it all depends on what you use your system for. I downgraded from 16 gb to 8 gb and didn't notice much difference.



    by the way newegg do not supply ram in India, is there any other who supplies ram to India with manufacture's warranty.
  4. Here's one vender, but I don't have time to search: http://www.flipkart.com/computers/components.
  5. o1die said:
    Here's one vender, but I don't have time to search: http://www.flipkart.com/computers/components.


    OK, thanks for your help. :)
  6. Best answer selected by atulmaniya.
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