High system System Interrupts above 20% CPU use at times?

After installing new ram (2 kingston 8GB chips totaling 16GB RAM) my CPU usage has been unstable i go from 2% CPU use to 8% while the computer is idling at times it even jumps above 20% while idle at times when on load (playing games and such) it jumps between 90 and 100% normally at about 97 or so percent so its far from nominal it even does this when opening and closing things like google chrome and task manager 

i am using a dell latitude e6540 with 

Intel(R) Core(TM) i7-4610M CPU @ 3.00GHz (CPU:0)

Name Intel(R) Core(TM) i7-4610M CPU @ 3.00GHz
Cores 2
Performance
Max Qualified Speed 3.00
Max Turbo Boost Speed 3.69GHz
Current Speed 3.59

Features MMX, PSE36, EM64T, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2,AVX,AES
FMA,XD,VMX,IDA,AVX2

Cache Summary
L1 Data Cache 2 x 32.00 kb
L1 Instruction Cache 2 x 32.00 kb
L2 Cache 2 x 256.00 kb
L3 Cache 4.00

OS:
Microsoft windows 7 professional (64-bit)
service pack 1
directX version 11

8192 MB DDR3 (1600 MHz)

Source SMBIOS
Memory Size 8.00
Memory Type DDR3(1600 MHz)
Memeory Manufacturer Kingston
Memeory Part Number KN2M64-ETB
x2

i started getting high system interrupts and erratic CPU use after installing the new ram i'm guessing that it isn't very compatible and i've probably voided my warranty by installing it 

i'm sorry if this is the wrong place but it looked like the right one to me