How to tell if I need more memory

[rgb]

My HP laptop is not the newest and often seems to run slowly. A few minutes to boot up and sign in and get the browser going.
Even typing this message, sometimes the characters don't appear instantly.
So I ran the winsat mem test, you can see it below. What do the two warning messages mean?

C:\Users\Owner>winsat mem
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: System memory performance assessment ''
Warning: The RDTSC to QPC delta is too high ( CPU 1 )
Warning: The RDTSC to QPC delta is too high ( CPU 0 )
> Run Time 00:00:05.16
> Memory Performance                           6622.61 MB/s
> Total Run Time 00:00:07.47

Apparently the max memory for this HP is: 8192MB, 2 slots.
http://www.crucial.com/usa/en/compatible-upgrade-for/HP-Compaq/elitebook-6930p

I also attach two screenshots of the Computer management performance manager system summary, the task manager, and the resource manager, taken a minute apart to get the two parts of the system summary.

[attachment deleted by admin to conserve space]

[Geek-9pm]

How to tell if I need more memory

At first I thought you said:
  How to tell if I need more money.
After giving it some thought, 
If you have the money, get the memory

Glad to help. 

[camerongray]

If the problem is memory related you would see the amount of used physical memory become close to 100% and the number of hard faults/sec would increase noticeably when the system is slowing down.  From your screenshots this does not appear to be the case.

[rgb]

If the problem is memory related you would see the amount of used physical memory become close to 100% and the number of hard faults/sec would increase noticeably when the system is slowing down.  From your screenshots this does not appear to be the case.

That's good news. But then what could be slowing down my system in the way I described above?

Any idea what the two warning messages are in the winsat memtest?