RAM upgrade brought WORSE performance. Acer Aspire 5 A515-51G

panos_chr

Hello,

I have an Acer Aspire 5 A515-51G which had 8GB total RAM (4GB soldered + 4GB in slot). Maximum RAM capacity is 20GB so I recently purchased an 16GB  (after being sure that it fits the criteria and characteristics). Now I have 20GB total running in Flex Mode as far as I'm concerned (CPU Z says dual so that's a sign).
My problem is that before changing the slot I run some tests (UserBenchMark and PassMark PerformanceTest) in order to see the difference of Before-After. 

PassMark PerformanceTest:
I found out that Memory Write has gotten worse (11676 Before - 7487 After) as well as Database Operations (2938 Before - 2249 After).
UserBenchMark:
Before my RAM scored a 62.2% and After 44.3% (with significantly dropped values at Multi core and Single core scores).
Also while runnig the test I saw memory latency getting a higher value than the previous test.

Anyone have a clue why my RAM upgrade brought me worse performance? Is it because it runs 4GB+4GB Dual Channel and the rest 12GB Single Channel? Can I do something to minimize that gap?

I will attach photos of my Before-After results in order to understand better.
Thank you in advance!

brummyfan2

Hi,
It could be the difference in CL values, could you please post the Memory tab and SPD tab for both modules(ADATA 4GB and CORSAIR 16GB).