Advance memory test only showing 1 ddr3ram

[jamez]

My system has 2 different ddr3ram sticks. OS win7 64 bit.
1. Hynix HMT351S6CFR8C 666.7MHz
2. Kingston 99U5428-06 666.7MHz

But when i ran the advance memory write speed test, it only displays the Hynix in the graphs. However, the results also states I have 8168MB of ram. Does the test takes into account both rams during speed test? Or it just tests the speed or the ram in the first slot?
i would have thought it'll test the combined speed of both rams together as an overall system.

[David (PassMark)]

The graph only shows manufacturer's details from the first stick detected.

As to what RAM is actually tested it depends on the test and what mode the memory is in.
For example with two sticks most PCs would be running in dual channel mode so memory accesses are interleaved.