it wont change the speed using different companies for hosting and domains.
why not use there live chat system to speak to them about the renewal prices? but i assume its the same as the cost of the domains they sell with no discounts
Not only will it not effect your site's speed having your names with one company and your hosting with another, that is actually a highly recommended practice. The whole don't put all your eggs in one basket thing.
Then how come my site A so much faster then site B?
Only difference was site B domain at difference registrar.
Also site A it is big site and site B tiny WP.
There's a lot of variables that could explain it, but who the name is registered with shouldn't be one of them. Now that said, if the registrar or someone managing the name has horked up the DNS records or something, that could cause performance issues, but that's just one variable to consider.
More common causes of site performance issues include having a lot of plugins and/or themes installed (even if they're inactive, they can add to overhead); having the hosting not optimized; having conflicting or twitchy plugins or extensions running; caching not turned on or not configured correctly. Those are a few possibilities, there are others. Take a look at those and if you're still having performance issues let me know.
When you get more than 50 domains at namecheap you can ask them for the golddeal coupon so you can always get a discount.
anyone got a code for namecheap or godaddy that can get a new .com under 6?