Micro-stuttering while playing CPU intensive games

[flopzeh]

I'm getting these really weird micro-stutters whilst playing. Game freezes for a split second, then continues, I don't get any FPS drops or anything, just a tiny freeze after which it continues just fine.

System specs:
Intel Core2 Quad Q6600 @ 2.40GHz
4 GB DDR2 @ 333 mhz (Dual-chan) <- One of my ideas about what might be causing the issue.
Nvidia GF 560 TI
7200 RPM 500 GB HDD

What I have tried:
Reinstalling graphics drivers.
Making sure CPU/GPU temperatures are low
Checking hard-drive for errors

Processor is more than enough the handle the games, overclocked it slightly, stutters remained exactly the same.

Zero ideas left, can RAM cause this issue? Has 1 GB sticks 400 mhz max, but theyre dual-chan so that should kinda make them work slightly faster? Forgot to add, while playing, CPU says at a stable 40-50% and never maxes out.

Or am I completely off?

 

[Suzuki@1473780084@1473780163]

What games? 4 GB RAM is certainly below minimum requirements of the majority of modern and semi-modern titles.

 

[huvik]

so your Ram are different makes and models?

is it happening online or offline games?

 

[flopzeh]

RAM has the same frequency, 2x1 GB Samsung and 2x 1 GB Hynd something, can't recall.

Well, RS3 and League don't ask for over 4 GB.

Both, online and offline. CIV 5 also had the same issue whilst processing a turn. Mini stutter but processor was at max 75%

 

[jeffredo]

Try turning off any unnecessary processes while gaming, run CCleaner and make sure you don't have any malware. Basically, they usual fixes for poor performance. Sounds like its more a combination of old, relatively slow hardware (CPU, GPU, RAM, HDD) more than anything.

 

[flopzeh]

I understand it but in that case shouldn't the CPU or HDD write speed or anything just max out and officially let me know I'm using a welfare PC for the poor?

I'm borrowing RAM from a buddy to test it out with higher bus speed RAM, maybe that'll let me know.

 

[flopzeh]

Did some more testing. Graphics don't matter, same stutter F/E on League with MAX graphics and MIN graphics. Processor doesn't go above 50% usage. Has 500W PSU so not a power issue.

Did some googling aswell, but didn't find any viable answers. Some say that Q6600 has a FSB of 1066 MHz which requires RAM to have around the same or slightly less speed to work properly, am I right?

edit/ Sorry for the double post, expected it to merge.