Quick memory (ram) question

[CJ McDermith]

I'm no expert on ram but I know the basics, currently I have a budget gaming computer with 8gb (This 2x4gb kit @1866mhz w/ stock timings). My question is, is it normal to be using 75% of your ram while running skype, chrome with around 5 tabs, Avast AV, steam, Hamachi and logmein. Also if i download torrents (not sure if it matters but im downloading them to an in house NAS) sometimes my computer all but locks up, mouse lags, videos wont play and so on. If stuff like this is occurring do I likely have a virus? I have scanned a few times with both Avast and Malwarabytes both comeback clean except one occasion where avast found 16 infected file inside the java program files (I always keep java updated so i wasn't worried). Or is this completely normal and I simply need more ram? I only got 8 because I had read that any more than 8 is basically overkill as the average user rarely exceeds something like 4gb if i remember correctly.

A pic from processes in task manager:

Note ram is at 50%, I had rebooted 10 minutes earlier.

Full specs:
P877-v motherboard
core i7 3770k OC to 4.22ghz Multiplier@41 and base clock@103.0 V@1.2
GTX 480
Seasonic 620W PSU
WD caviar Black 1tb
SanDisk ReadyCache SSD (IMHO this thing is great, obviously not as good as the real thing though)
CM Storm Scout case, with many fans and an Antec Kuhler H2O 620 cpu cooler.

 

[Tradesman1]

A ton of it appears to be Chrome, do you have the latest version?

 

[CJ McDermith]

A ton of it appears to be Chrome, do you have the latest version?

Good question... It would appear so. It is telling me its up to date with version 28.0.1500.72 m.
Another tid bit that might give insight, heres a picture of what i see in the chrome task manager:

Im using way more tabs then normal but still that seems like a lot just to browse the web, heck my phone has that many tabs open at any given point and it only has one gig of ram.

[EDIT]
Just added the processes up without chrome running, task manager shows 39% of my ram (about 3.1gb) being used when i added up all the tasks the total memory usage shown in task manager was barely above 300Mb is that normal?

 

[Tradesman1]

Looks like it, lots of tabs, Flashplayer drawing a lot - is it up to date? (while here - go ahead and jump over to the Egg and buy the Ripjaws 😉 just kidding ), any idea what the phone extension thing is.....wondering if you may have Malware, maybe a Bot, might want to pull down MalwareBytes and run a check

 

[CJ McDermith]

Looks like it, lots of tabs, Flashplayer drawing a lot - is it up to date? (while here - go ahead and jump over to the Egg and buy the Ripjaws 😉 just kidding ), any idea what the phone extension thing is.....wondering if you may have Malware, maybe a Bot, might want to pull down MalwareBytes and run a check

chrome to phone is an extension I have used for some time now, it allows me to click a button in the top right to have web pages and youtube videos open automatically right on my phone. its pretty useful, or at least it beats emailing links to yourself
also i updated my last post with some new info so that might help, and about the ripjaws I have been seriously considering it. I feel ridiculous, I dumped what little money the government leaves me from my paychecks into this thing over and over and I cant even keep more than 5 tabs open. So far including the 2 monitors (one early 3d w/ NV stereo 3d kit) and upgrades along the way I probably have more than 2 grand in the thing not even one year after building it.

[EDIT]
ran malwarebytes last week with no results, but I guess its worth a shot. will update, thanks for the help so far really appreciate it

 

[Tradesman1]

Something to try, uninstall all the Adobe apps (Flash, reader, etc, and then reinstall along with Chrome