I7-720QM vs I5-520

The i7 processor is the better as it is quad core whilst the i5 is a dual core. in theory the i7 can handle more processes and at faster speeds than the i5.

However i would advise you to read any posts regarding the 17 as there have been a few issues with power and the cpu.

Raz

Raz,

i agree with your analysis on this issue.  i've had a Core i7 equipped computer since December, and had to have it replaced because the previous one died on me.  however, with the new computer, i've had nothing but positive experiences (except for the iTunes sync issue, which may be traceable to an Intel issue, and DELL seems to be working on solutions, as most models - not the Studio 1557 - have had the problem resolved).

if the PC is being used solely for home use, and you don't need an ultra powerful computer, you may realize some battery savings by going with the less powerful Core i5.  don't be fooled by the speed of the processor.  all that tells you is that the processor runs at a certain frequency when conducting its business, but can't be compared to other machines.  you wouldn't say that a 3.3Ghz Pentium 4 processor is faster than a 2.67Ghz Core i7!  that's why most of that branding has gone away: they're deceptive, and don't provide much of a help in selecting a processor, unless comparing two different processors of the same class (Core i7 920 - 2.67Ghz - is slower than the 975 - 3.33Ghz)

thanks to both of you for the explanation explanation

hi there... can anybody tell me that why dell has removed its i7-720QM processor from its configuration. i live in india and was planning to buy a dell studio with same processor but suddenly see tat dell is now providing i7-740QM and i7-840QM only.

    please help me friends... my email is <ADMIN NOTE : Email id removed per privacy policy>

   thanking you in advance !