ATI Radeon HD 4870 X2 – Idle mode
ATI Radeon HD 4870 X2 – Under Loading
It’s time for a new version of FurMark. With this very cold winter we currently have, only FurMark can bring you the heat you need! Here are the main changes of this new release:
Expreview has done some tests on the new Powercolor product, the Radeon HD 4870:
One of these tests is FurMark and the HD 4870 fails to complete one minute of FurMark’s stability test. Failure symptoms are VPU recovery message, red LED (on the PCB) that shines…
For one thing, BIOS limited fan speed too low, that results in a higher GPU temperature; For the other thing, it gets through 3DMark Vantage, but fails to complete FurMark test. We believe it’s the BIOS setting that causes these problems and asked PowerColor for a new BIOS, but the answer was not available yet.
Other pictures of Powercolor’s Radeon HD 4870: PowerColor HD 4870 in our hand, looks even better than reference.
The biggest problem of Radeon HD 4850 is that this card reaches high temperatures (70 degrees celcius) even in idle (i.e. not loaded). So manufacturers decided to discard the stock cooler in favour of a better and more efficient cooler. In these reviews, the Sapphire’s solution, the Radeon HD 4850 Toxic edition, is analyzed. This Radeon features a Zalman heatpipe fan, providing more efficient cooling, quieter operation and more headroom for performance tuning.
Due to the better cooling solution, frequencies have been overclocked:
Toxic Radeon HD 4850 has the following features:
– GPU: RV770
– stream processors: 800
– ROPs: 16
– transistors: 956M
– memory 512Mb / 256-bit
– core clock: 675MHz
– memory clock: 1100Mhz
– DirectX 10 / OpenGL 2.1
However, the Sapphire cooling solution is one of the noisiest cards under idle: around 40db. But this cooler does its job by keeping GPU temperature at least 20 degrees lower than a standard Radeon HD 4850.
- Sapphire Toxic Radeon HD 4850 @ TheTechLounge
- Sapphire Toxic HD 4850 @ CPU3D
- Sapphire Toxic HD 4850 @ techPowerUp!
More information about Toxic HD 4850: Toxic HD 4850 @ Sapphire
More news about Radeon HD 4850: Radeon HD 4850 @ Geeks3D