Sapphire's HD 5770 is a decent mid-ranger that offers all the benefits the 5000-series family has to offer. As well as exploiting the DX11 effects-suite, it also makes ATI's EyeFinity multi-screen technology a possibility, with the option to attach more screens than the average card.

And that's fine if you're after some kind Adrian Zeidt multi-screen desktop, running apps and movies. But does it have the grunt to play games smoothly at the potentially massive resolutions offered by two, three or even four screens? Not really. The card performs reasonably at mid-range resolutions with high settings, and even makes a fist of it at higher resolutions, but quadruple, triple or even double that number of pixels with extra screens, and this 5770 is going to run out of gaming grunt in pretty short order.

In terms of gaming performance, it's second only to Gigabyte's Super Overclock offering, which makes it a competent gaming card on a single screen, and that's probably due to the extra 50MHz on the GPU over stock cards. In real-world terms, that's a couple of frames per second over the standard 5770 pack.

So it all depends what you're after. This Flex Edition card carries a price premium, even over Gigabyte's Super Overclock, because it carries the physical outputs and bundle components to support four-screen EyeFinity, and this will be a tempting prospect for that minority of people who are looking for a multi-screen setup. Competent gaming performance in the 5770 stable is also nice, but don't expect more than a frame or two a second over the best on offer.

We liked

The Sapphire HD5770 offers performance comparative to the best of the 5770s. It's quiet, efficient, and is as well-featured as the category gets. We also liked the inclusion of a DVI-to-HDMI cable in the box, and the fact that this is the only 5770 to offer four-screen EyeFinity.

We disliked

It's hard to justify the price premium

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