Is this a 2.4ghz version?
651165
I just bought one and it is not. Ask before you buy. Usually 2.4 is an "extra"
1276542
3.4GHz is the highest rate the CPU can reach, generally it runs as 2.4GHz, this is the way it should be.
2258000
This part definitely supports both 2.4 and 5 GHz; I'm currently using it at 5GHz. But I think I'm using 802.11n; max throughput is around 240-270 Mb/s (using Linux Mint 16 and an Intel wifi PCIe card). So I can't say about 802.11ac.
386125
This question doesn't really make any sense. This processor is clocked at 3.4 GHz.
411126
Must be a screw up by Amazon. I received my Lenovo Y580 a week ago and I can confirm it is 2.4Ghz.
1292506
This model is only 2.4 GHz. They do make what you need. It is called the UniFi AP-Pro.
526645
1.10 GHz, 2 Mb of cachehttp://ark.intel.com/m/products/56056/#@product/specifications
1006700
2.4 Ghz works perfectly. I don't have a 5Ghz WiFi router, so I don't know if there is any performance gain from the higher frequency, but I suspect not, assuming similar signal strengths for both.
1518474
It is listed as 2.4 ghz, and it's a quad processor. It's fast for a moderate priced laptop.
810054
It is 1866MHz but it'd work with your system, just set it to the correct speed and everything should be fine.
1927292
2.4 GHz is what listed in the specifications but I don't recommend using a expander as I find it to be more like a 5dbi in performance.
1307575
It does appear that according to multiple places (including intel - http://intel.ly/NkDugp), it is indeed a 1.9ghz processor.
1504365
It is a 2.0 ghz but can max up to 3.1. They caught me with that. Feels a little like false advertising to me.
1292507
According to their site as well as the documentation that comes with the product, this specific model ONLY broadcasts at 2.4GHz. The Unifi Pro models, are both 2.4 and 5GHz capable, but that capability comes at an increased price. (still probably less than any other comparable product though....)
920378
It is 1.8GHz (up to 2.7GHz with Turbo boost). Intel Turbo Boost Technology 2.0 is activated when the Operating System (OS) requests the highest processor performance state (P0).
1360350
Christian is correct. I believe only a single core switches to a higher clock speed under heavy load. You don't need to do anything at all and all switching is done automatically. You shouldn't notice anything different except a little more battery drain when it ramps up to 2.8 GHz.
103863
The graphics on the 2.0Ghz model are perfectly fine for your purposes. I have one of these machines and it is excellent for just what you plan to do. Enjoy!