Test Setup
In order to thoroughly test memory as well as memory kits, we're making use
of Intels Haswell platform in combination with a highly binned Core i7-4770K
CPU. This allows use to drive memory at highest possible frequencies and
therefore do proper scaling tests. Different memory chips (ICs) have different
sweet spots in the case of primary timings, which is why we're altering CAS
latency, tRCD, tRP as well as tRAS. Overall we build five different presets,
which - as explained - can be different from IC to IC used on a memory module.
Other than that we're also changing DRAM voltages, wheras we're setting 1.35V,
1.50V, 1.65V and 1.85V. There are actually reasons why we're using these
voltages. 1.35V is commonly used on ultra low voltage memory modules (ECO) and
low voltage memory makes use of 1.50V. 1.65V is the value recommended by Intel
and 1.85V is used for overclocking capability testing. Last but not least it
remains to be explained how we find out whether a certain setting is stable or
not. For that purpose we're running HyperPi.
|
Motherboard |
ASUS Maximus VII Formula (BIOS 0603) |
| CPU |
Intel Core i7-4770K ES |
| Graphic
card |
ASUS GTX 580 |
|
Memory |
F3-2666C12Q-32GTXD |
|
SSD |
Samsung 845DC EVO 960GB |
|
PSU |
Seasonic Platinum 660 Watts |
|
OS |
Windows 7, 64 bit SP1 |
Kingston HyperX Predator 2x4GB DDR3-2800 CL12 1.65V Review 