Gigabyte 890gpa-ud3h

hey guys so i built a new computer and im having a few problems with the memory i got from newgg

i had bought 4gig of

OCZ Gold 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model OCZ3G1600LV4GK

http://www.newegg.ca/Product/Product.aspx?Item=N82E1682...


1 came as a dud and i think the other one is giving me problems

i was just wondering how can i find out that the stick thats in my computer is working well and not about to fail

and i was thinking of returning both these sticks and just buying some locally and just wanted to see what you guys think of these sticks and if they will work well with my motherboard and my processor( i have amd phenom II x4 955 black edition)

so i was thinking of this stick
Patriot Extreme Performance Viper II Series DDR3 4GB (2 x 2GB) PC3-12800 Low Latency Dual Channel Kit
http://www.memoryexpress.com/Products/PID-MX25527(ME).aspx

or

Kingston HyperX 4GB PC3-12800 Dual Channel DDR3 Kit (2 x 2GB) C9 w/ Intel XMP
http://www.memoryexpress.com/Products/PID-MX26528(ME).aspx

or if you guys think any of these would be more compatable for better
http://www.memoryexpress.com/Products/Computers(ME)/ComputerComponents(ME)/Memory(ME)/DesktopMemory(ME)/DesktopDDR3SDRAM(ME)/Default.aspx

any help would be appreciated, thanks guys!