iXBT Labs - Computer Hardware in Detail






Sapphire Toxic HD 5850 1GB GDDR5 Graphics Card

Nice overclocking potential and price/performance ratio.

May 20, 2010

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Sapphire Toxic HD 5850 1GB GDDR5

Cooler's most distinctive feature is a vaporizing chamber. Liquid coolant vaporizes on the hot surface, the resulting vapor condenses on the cold surface, and is taken to the hot surface again. This recirculation goes on inside a degasified chamber, controlled by a complex capillary system. Vapor-X chambers are very thin, mounted directly on GPU dies.

This solution cools both the core and memory chips. Its performance is further boosted by a large heatsink with a low-speed fan in the center. This solution is noiseless.

A few words on how we tested this graphics card. Factory overclocking usually boosts performance by just about 5%. We tried Sapphire Toxic HD 5850 1GB GDDR5 at the clock rates typical of Radeon HD 5870. And since it worked fine and stable, we decided to test it at those high frequencies.

Traditionally, we monitored temperatures using RivaTuner.

Sapphire Toxic HD 5850 1GB GDDR5

As you can see, the card only heated up moderately. The Vapor-X cooler worked fine though the core clock rate was increased significantly from 765 MHz to 850 MHz.


A basic bundle for such a graphics card should include the following items: a user manual, a software CD, and a CrossFire bridge. Now let's see what other accessories are bundled with Sapphire Toxic HD 5850 1GB GDDR5.

Sapphire Toxic HD 5850 1GB GDDR5

The basic bundle is enhanced with power splitters and a CD with CyberLink software.


Sapphire Toxic HD 5850 1GB GDDR5

The graphics card is stowed into a papier-mache compartment, the accessories are inside a box located under the card. The whole bundle is packed into a traditional Vapor-X series box.

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Article navigation:

Page 1: Introduction, design

Page 2: Cooling, bundle, box

Page 3: Performance tests

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