Question Intel i3 3.2ghz or intel i7 2.8ghz

[Fathead1]

I have just obtained a dell Precision T1500 which has a Intel core i3 - 550 3.2ghz cpu but i have knocking around an intel core i7 - 860 2.8ghz cpu can anybody help me decided which is better for the pc. I understand the i3 is dual core and the i7 is quad core but would the difference in speeds be much different?
Normally i wouldn't bother with the upgrade but i have the i7 spare.

The pc is only used for music transfer to minidisc, general internet and word processing plus arduino.

Any help would be great

 

[shknawe]

The i7 is basically twice the cpu that the i3 in benchmarks. Hands down the i7. Or thumbs up maybe

 

[Cioby]

i7 definitely, just make sure you have some thermal paste if you plan on replacing the old one.

 

[Fathead1]

i7 wins then thanks for the reply's. I have thermal paste already to go. So on with the upgrade