From past experiences, always stick to Quality Name Branded RAM such as: Kingston, OCZ, Crucial, and Corsair.
Stay FAR FAR away from Korean made memory chips such as: Samsung, Hynix, Hynh, Goldstar. Also, stay away from Markvision memory branded chips. These memory modules may be cheap for your wallet. But they are not worth the headaches in "memory allocation" error message or the dreaded "blue screen of death" or where the total amount of memory shows only up to 75% of what it should be or where the OS just simply crash.
After swapping in with REAL QUALITY memory, all problem solved. Never looked at buying any frakking Korean made memory chips/module again.
Trust me, you are SOOOO much better off with Kingston or Corsair made and branded memory chips.
Same goes with Hard Drives. Never buy Samsung Hard Drives. All three 500 GB Samsung Hard Drives crashed with Hard Disk failures. I bought 2 x 500 GB Maxtor and 2 x 500GB Western Digital SATA HDD and they're still running smoothly.
Same goes with the LCD Monitors. We bought 5 LCD monitors and they were Samsung. 4 of them died. What a load a crap. Acer X203w LCD monitors lasted longer and had better quality for the price.
Samsung is a real piece of crap makers. They should be banned from importing their stuff in to USA/Canada.
...oh, and let's not forget about their monochrome printers...when they're cheap, they're really cheap. Those printers don't last on regular use. They are a real piece of crap.
...my family member bought a Samsung digital camera, and in 1 month, she hated it and returned it for a Canon for better quality.
Save yourself from the trouble...never buy Korean made computer-related-techno stuff. Which reminds me, my Korean friend said her Kia (Korean made Honda Civic version) is a piece of crap. She even insisted to buy American/Japanese made stuff as they are better quality.