i7 6500u vs i7 7500u for Virtualbox

[subha]

Hi all I'm new here. I'm planning to buy a laptop(Dell Latitude/Thinkpad E470) with i7 6500U/7500U processor and 16GB RAM. Now my question is that how good is these ULV class cpus for virtualization? As I've heard in other Hardware related forums that i7 6500U/7500U will not be a good idea if I'm going to virtualization due to their lower TDP. Is it true? Should I need to invest a large chunks of money for a high power processor like i7 6700hq or i7 650U/7500U would be perfect? Please suggest as I'm in great confusion.
Thanks in advance

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[DaveSimmons]

What VMs do you want to run, OS and applications? How important is speed to you? Do you need to run multiple VMs at once? Why do you want this on a laptop instead of a faster, cheaper desktop?

Of course a slower CPU will run slower than a faster CPU, and more cores will let you run more VMs at full speed. But slower might still be fast enough, and for many applications the extra cores are not needed to run 1 VM with one typical application.

 

[subha]

What VMs do you want to run, OS and applications? How important is speed to you? Do you need to run multiple VMs at once? Why do you want this on a laptop instead of a faster, cheaper desktop?

Of course a slower CPU will run slower than a faster CPU, and more cores will let you run more VMs at full speed. But slower might still be fast enough, and for many applications the extra cores are not needed to run 1 VM with one typical application.

Thanks for replying. I know that desktop are lots more powerful and cheaper than laptops but I've to take this laptop at college regularly so I'm not thinking for desktop. On my current system I used to run Linux as host OS and FreeBSD, Opensolaris and Windows 7 as guest. So 3/4 VMs. I use them at once occasionally I mainly use one VM at once. I'm a computer science and engineering student so I've to and love to do some tinkering with OS and with their applications. So do I need i7 6700hq or i7 6500U/7500U will be just fine for me? Again I'm investing on this machine for long-term use(until I complete my college and university) so will it be fine for next 4/5 years?

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[UsandThem]

So do I need i7 6700hq or i7 6500U/7500U will be just fine for me? Again I'm investing on this machine for long-term use(until I complete my college and university) so will it be fine for next 4/5 years?

Get the one with the i7 6700HQ. The 'U' CPUs really knock the performance down a bit. Plus the 6700HQ is 4 core / 8 thread. The others are 2 core / 4 thread.