The ProBook 450 G1 has a better Wi-Fi standard than most laptops that have been on the market for more than two years. This HP portable PC has an 802.11n WiFi standard, whereas most comparable spec laptops that came out around the same time as it have an 802.11b WiFi standard. This notebook PC also has an 802.11g WiFi standard.
An 802.11n WiFi standard is in fact the best Wi-Fi standard across all laptops of a similar age and spec to the ProBook 450 G1.
The worst Wi-Fi standard across similar types of portable PC is 802.11a.