I too find Chrome unstable on two Win7 laptops (Intel Core 2 Duo and Intel i3, both with 3Gb memory), on one it forever crashes and has to reload for no apparent reason (usually when I open a new tab) and the other the memory it consumes gets so high it causes Chrome to grind to a halt.
I’ve not tried Firefox on the Intel i3 (it’s not my laptop) but Firefox is rock solid on the Intel Core 2 Duo. It has much more features too.
Chrome is fine with only 3-4 tabs open (my Mother never opens more than 2 tabs) but start opening a lot and it becomes very unstable.
Article source: http://www.zdnet.com/blog/security/google-chrome-19-is-out/12162