Re: Need help with my Lenovo laptop memory upgrade SL-510
PC10600 is faster.
It's best to buy a pair of identical sticks (they don't have to be in a kit), but if you're buying the cheapest available then there's little point looking for two different companies. Just buy two at the same time.
I'll miss a few I suspect, but the following brands tend to be okay: "Kingston", "Corsair", "Crucial", "G.Skill", "OCZ"
Athlon II x4 645 || 1TB 7200rpm HDD || EVGA GTX 650Ti OC || 8GB DDR3 RAM || Windows 7 Home x64
i5 4210M || 500GB Samsung EVO 850 SSD || GeForce 825M || 16GB DDR3 RAM || Windows 10 x64