Yes, the
demo is on a shared server, nothing particularly special and all features are enabled.
Performance depends on the usual factors...
- How fast your server is, volume of traffic
- Number of template features enabled
- Number of X-Cart modules enabled
- Number of categories / products
- File sizes of your product images
etc.
Not only that, speed depends on how good your browser is and how fast your computer is.
We've used as few images as possible in the layout, to cut down on HTTP requests, the template makes use of the JS/CSS speedup tools.
There's plenty of other speed optimisations you can do, like Jack says, using a CDN is one of the best.
Enable GZIP compression, optimise your product images, combine images into sprites (we've done that to some extent in Adapt), make use of the 'optimization settings' in general settings etc. etc.
Loads of tips here -
http://help.x-cart.com/index.php?title=X-Cart:Performance_tips