Hot Hardware published a review on the Round-Up: GeForce GTX 980 and 970 Cards From MSI, EVGA, and Zotaced A quote from the article:

In all of its iterations, NVIDIA's new Maxwell GPU has proven to be a good performing, power-efficient architecture. But it's at the high-end of the market where some of the most exciting products reside. Typically, when NVIDIA launches a new high-end GPU, cards based on the company's reference design trickle out first, and then board partners follow up with custom solutions packing unique cooling hardware, higher clocks, and sometimes additional features. With the GeForce GTX 970 and GTX 980, NVIDIA's board partners were ready with custom solutions very quickly and they?ve only been refined over time, as NVIDIA has tweaked their drivers and board partners massage specs, fan profiles, and the like.

Today we want to show you three custom GeForce cards, from enthusiast favorites EVGA, MSI, and Zotac. Two of the cards are GTX 980s?the MSI GTX 980 Gaming 4G and the Zotac GeForce GTX 980 AMP! Omgea, the third is a GTX 970 from EVGA, or more specifically, the EVGA GeForce GTX 970 FTW with ACX 2.0.

 Round-Up: GeForce GTX 980 and 970 Cards From MSI, EVGA, and Zotac Reviewed @ HotHardware