Kingston HyperX LoVo 1866MHz DDR3 4GB Memory Kit ReviewWed, May 05, 2010 - 12:00 AM
Kingston Internal Power Testing
We wanted to confirm our rest results with Kingston, so we asked Kingston if they could confirm our results. Kingston went the extra mile and put together some nice test data for us that will now also be shared with others in the media. Let’s see what they did!
- Module P/N: KHX1866C9D3LK2/4GX (Profile used: DDR3-1600 CL9-9-9 @1.25V)
- Motherboard: Asus / P7P55D Deluxe Motherboard / AVL SN: SI7906;
- CPU: Intel Lynnfield 860S, 2.53GHz
- Test Equipment: Fluke Hydra Data Logger 2625A
- Diagnostic: MemTest86+ v4.0
For example purposes, Kingston used two special riser cards that allowed us to measure the power for each module, reading both current and voltage. The readings were sync’d to read voltage and current readings, to generate the power values shown.
Note: The power data and thermal data are for reference only because the testing environment and tools are not ideal for accurate readings
Kingston attached thermal sensors to heat spreader temperatures if anything significant was observed.
LoVo memory ran at 1600MHz from 1.25V to 1.85V. Of course, please don’t try >1.65V voltages on your personal rig. Notice that Kingston used memory riser cards and is able to monitor the voltages and power consumption of just the DDR3 memory modules and not the rest of the system. This is something most review sites don’t have the ability to do.
Here is the entire Kingston HyperX LoVo DDR3 power testing system. Notice the Fluke Hydra Data Logger 2625A sitting on the right hand side! It would be nice to have one of those around here!
Notice that the Maximum Idle and Average Idle values were essentially the same when it comes to power consumption at the memory module level. It’s great to see a chart like this as you can see exactly what the modules are consuming in terms of power. Let’s focus on the Idle Max and Stress Max results.
Notice that the power consumption at idle doubles from 1.25V to 1.85V at an idle state and more than double under full load. Kingston’s testing showed that there was roughly a 3 Watt difference between running 1.25V and 1.65V at Stress Max.