True, but if you go by the actual category they are in, and the description on the website:-
4200MHz RAM Speed
CAS 19-26-26-46 Timings
1.40V VDIMM
Corsair Vengeance Airflow Included
Lifetime Warranty with OcUK
Specification:
- CPU Compatibility: Intel Haswell-E & Intel Skylake
- Chipset: Intel X99 / Z170
- Capacity: 8GB (4GBx2)
- Dual Channel kit: Yes
- Tested Speed: DDR4-4200 MHz (PC4-33600C19)
- Tested Latency: 19-26-26-46
- Tested Voltage: 1.4V
- Registered/Unbuffered: Unbuffered
- Error Checking: Non-ECC
- Type: 288-pin UDIMM
- SPD Speed: 4200 MHz
- SPD Voltage: 1.4V
- Warranty: Lifetime