The Elite U-Dimm 4GB beholds the consistent quality, to insist on adopting high-quality ICs, in addition to strict production and manufacturing processes together with strict test procedures. Also, JEDEC（JOINT ELECTRON DEVICE ENGINEERING COUNCIL) regulation is followed in production. TEAM ELITE DDR3 1866 is a 240-pin standard design, operating with a voltage of 1.5 volts to achieve both energy and electricity saving and meet environmental protection regulation. Moreover, This TEAM ELITE provides various frequency and capacity selections to meet different levels of requirements of consumers in use. This Elite U-Dimm DDR3 Team RAM comes with 4GB capacity, CL11-11-11-28 CAS Latency, 12,800MB/s (PC3 12,800) DataTransfer Bandwidth, 1.5V and 1.35V Tested Voltage with Lifetime warranty. TEAM Elite U-Dimm 4GB 1600MHz DDR3 RAM Review I was shocked to see by the sticker that this item was a restock; I thought that I was buying a new item, but that's not the worst of it. The manufacturer actually forgot to solder DRAM chips on one of the modules ENTIRELY, and the other module was missing a chip. More incredibly, this piece made it past the eyes of several people who could have inspected it before it got to the first person who returned it and yet somehow it ended up getting resold to me? How many more times is this item going to be resold before someone realizes it's totally defective and must be recycled? Y'all got too many stupid people working for you. In a way, I'm glad I'm no longer one of them. Anyway, yeah, I got a refund, and hopefully this item is going to meet its fate. I have 4 RAM slots on my motherboard with 2x4GB memory chips installed from way back in 2012. I upgraded to the 2x8GB chips from TEAM Group and they work fine in combination with the older chips. I made sure to put the different RAM on separate channels, so they are arranged as 8-4-8-4. Not an issue using the different size and brand, as long as they are the same speed and voltage. Saved me a lot of money over buying another brand. Now, my only issue is Photoshop has gone mad-crazy with RAM gobbling and ate it all up and is chomping at the bit to eat more. It's like the Cookie Monster on steroids, that Photoshop. Never satisfied. I feel like I could have 128GB and Photoshop would still complain about being starved for RAM. :( Specification: Key Features Type DDR3 Capacity 4 GB Frequency 1600MHz Operating voltage 1.5V Physical dimension Dimension 133.4 x 30 mm Heat Sink Color No Warranty Information Warranty Lifetime Warranty  ..