Yes the extra year warranty is a big plus imo.
Agree and backplate that look slike it has been though out to allow some of the hotter areas to let the heat escape and:
Hi-C CAP
A Hi-c CAP is a very small, but super-efficient capacitor. Besides ensuring enough spacing around a CPU socket to install large coolers, it also allows for 93% energy efficiency. Thanks to Hi-c CAP's MSI mainboards are the most energy efficient in the market.
SOLID STATE CHOKE
It’s a new generation, form-in-one choke, which doesn’t generate vibration noise under heavy loading & provide 37,5% higher current output comparing with traditional ring chock. It’s very important when GPU is overclocked or under high loading, since it requires even more amount of electricity which can be provided through this component.
MILITARY CLASS COMPONENT
One of the deciding factors in performance is the quality of the components used. That is why MSI only uses MIL-STD-810G certified components for its Gaming cards because only these components have proven to be able to withstand the torturous circumstances of extreme gaming and overclocking.
SOLID CAP
One With their aluminum core design, Solid CAP's have been a staple in high-end design mainboard designs and provides lower Equivalent Series Resistance (ESR) as well as its over-10-year lifespan.
http://www.msi.com/product/vga/R9-290-GAMING-4G.html#overview