My Ethernet speed is slower than my Wireless Speed

I have a Dell XPS 435t/9000

Category 7 cable standard was created to allow 10 Gigabit Ethernet over copper wire.  This is shielded cable and not suitable for CAT5 or CAT6 aka Gigabit or 100 meg ethernet.  There are no commercial routers that I know of that have 10 gig ethernet connections. There is a reason that BrokenRing lost the Standards Wars. 

The other reason it might be bad is that PAIRS are not being used.,

1 2 3 then 6  45 then 78

You should not do 12345678

Alright thank you for the detailed explanation it makes sense. However so what cable do I need? It should be faster and more reliable wired? Only problem is I do need 20 ft of cable.

Do you have the latest Ethernet driver installed?

I do. I thought cat 7 would give me the best speed possible so still not sure what cable I need. It shouldn't be capped at 100mbps right that's what I get out of my wifi

Now I have a question for you...

In your other thread you said all your devices are 5 GHz. But, Dell only very recently started installing a dual band "ac" WiFI card that supports 5 GHz in certain PCs  and it's an option at extra cost on some of versions of those models.

So your XPS 435t/9000 has a single band 2.4 GHz WiFi card, unless you upgraded it after you purchased the system from Dell...

What am I missing?

What's the speed rating for your ISP service? If it's capped at 100, that's the best you can get, no matter what...

As I mentioned in your other thread, speeds vary based on network traffic, which changes with day of  week and time of day, and distance to the speedtest.net server being pinged.

I just used speedtest.net with an Ethernet cable connected directly to FiOS service to ping a server that's ~10 miles from here and got ~32 Mbps, and then immediately pinged a server in TX (~1500 miles) and got only ~11 Mbps. So you can clearly see how distance makes a difference. (Tested on a desktop which doesn't have WiFi so I can't compare the two.)

In order to compare your Ethernet to WiFi, you'd probably have to test them repeatedly, eg. Ethernet, then WiFi, then Ethernet... one right after the other. Otherwise, it's not fair to compare because of all the variables which you can't control.

CAT5e or CAT6 (or CAT6a) cable should probably be fine for home use.  

Alright I'll call my isp and ask. Good question rohe and thank you for your assistance on all my questions. As for my card I'm not sure but I do know I'm connected to my router under 5ghz connection because it gives me 2 options the 2.4ghz and 5ghz connections. I never upgraded it it came with the system. Would you suggest a pci card upgrade I don't think I will be getting much faster with Ethernet, though I'm just speculating since on my mobile devices I'm getting 118mbps also.

If the WiFi card came with the system, it's Dell's Wireless 1505 Draft 802.11n and I'll be really surprised if it is dual band (2.4 and 5 GHz) capable.  Dell only started offering dual band cards in their latest, most expensive, XPS models, and mostly as an optional upgrade.

You need to find out what your ISP plan speed is rated at. If you're already getting 100+ Mbps at speedtest.net via WiFi then you may already be maxed out....

And if your current card is talking to the router at/near the router's rated link speed, a new WiFi card may not help much, because the bottleneck could be your connection to the ISP. Depending on your ISP, you might be able to purchase a plan with higher speeds, but it will probably cost more...

An UN shielded Twisted pair commercial cat5 or Cat 6 of 7 meters are cheap.

http://www.staples.com/25+ft+ethernet+cable/directory_25+ft+ethernet+cable