4 x 8192 MB DDR4-2667MT/s Kingston KHX2400C15D4
Intel Core i7-6800K testing with a ASUS STRIX X99 GAMING (1401 BIOS) and NV124 4096MB on Ubuntu 18.04 via the Phoronix Test Suite.


4 x 8192 MB DDR4-2667MT/s Kingston KHX2400C15D4: 

	Processor: Intel Core i7-6800K @ 3.80GHz (6 Cores), Motherboard: ASUS STRIX X99 GAMING (1401 BIOS), Chipset: Intel Xeon E7 v4/Xeon, Memory: 4 x 8192 MB DDR4-2667MT/s Kingston KHX2400C15D4, Disk: 512GB Samsung SSD 850, Graphics: NV124 4096MB, Audio: Realtek ALC1150, Monitor: C27FG7x, Network: Intel Connection + Qualcomm Atheros QCA6174 802.11ac Wireless

	OS: Ubuntu 18.04, Kernel: 4.15.0-29-generic (x86_64), Display Server: X Server 1.19.6, Display Driver: modesetting 1.19.6, OpenGL: 4.3 Mesa 18.0.5, Compiler: GCC 7.3.0, File-System: ext4, Screen Resolution: 3840x1080


RAMspeed SMP 3.5.0
Type: Copy - Benchmark: Integer
MB/s > Higher Is Better
4 x 8192 MB DDR4-2667MT/s Kingston KHX2400C15D4 . 26188.74 |===================


RAMspeed SMP 3.5.0
Type: Copy - Benchmark: Floating Point
MB/s > Higher Is Better
4 x 8192 MB DDR4-2667MT/s Kingston KHX2400C15D4 . 26139.84 |===================