Ram not running in dual channel?

I recently bought a new computer and built it myself.

Motherboard: GIGABYTE GA-EP45-DS3R LGA 775 Intel P45 ATX Intel Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128344
RAM: OCZ Reaper HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227289

It won't run dual channel. I flashed to the most recent BIOS and a few other things but it keeps saying single channel. The RAM is in slot 3 and 4 (since 1 and 2 wasnt running dual). The slot colors are different. Computer is showing ram using 33% just for runnning Vista =/

Here's some screenshots of CPU-Z

7 answers Last reply
More about running dual channel
  1. You need to install the ram in 'same color' slots for Dual Channel capabilities.
  2. hm okay, i'll try that
  3. ^Yes, like slots 1 and 3, or slots 2 and 4.....
  4. Okay, done. But Vista is still running at 1.2 gigs of ram. Is that normal? And if you look at my CPU-Z is there room to improve the performance of my ram?
  5. ^+1. Most test show dual channel doesnt really make a lot of difference
  6. ^^ I have 750 watts btw
  7. McMllnT92 said:
    Okay, done. But Vista is still running at 1.2 gigs of ram. Is that normal? And if you look at my CPU-Z is there room to improve the performance of my ram?


    Yes. Depending on what programs you have running in the background.
    Vista will use around 700 meg to well over 1 gig by itself, depending also on what it is doing in the background.
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