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Page 1 of 3   This time, in our test lab arrived Sapphire HD 5750 graphics card with custom cooling system already seen on several Vapor-X models. This cooling system is based on Vapor Chamber Technology that, basically, functions similar to heat pipe cooling systems. It consists of one “large” chamber with coolant liquid that evaporates when heated by, in this case, GPU, which is in direct contact with bottom chamber surface. The rest of the cooling system is consisted of slim metal fins and one fan. This solution is much better solution than referent ATI solution used on referent models. Vapor-X on Sapphire HD 5750 was almost silent during all our tests and never got over 55 degrees Celsius, which is great result. In closed enclosures, this temperature can go up to 65 degrees Celsius, but even that is great result.
In the package, we found more-or-less standard equipment: power adapter with two Molex connectors, DVI to HDMI converter, CrossFire bridge and coupon for free DIRT 2 game, that should be available at this moment all around the world. Besides cooler profile that will obstruct next PCI slot, back panel will also take two slots but, also, with good reason: two DVI connectors, one HDMI, and one DisplayPort.
This graphics card supports ATI EyeFinity multi-monitor technology, but you will need one monitor with DisplayPort to use its full potentials on this model. Sapphire used only solid capacitors and black diamond chokes (iron) so no “hissing” sounds were detected during testing period that is characteristic even to some of the most powerful models.
In Unigine Heaven, we noticed significant frame rate drop with enabled tessellation in DirectX 11 mode. Since Unigine Heaven is technological demo and it uses all features of new DirectX 11 in “extreme” amount, which resulted in significant frame rate drop. Games won’t use and rely on tessellation that much, so you shouldn’t be too concerned with this “problem”.
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Graphics cards 
