Feeds
75%

Sapphire Radeon HD 4850 X2 dual-GPU graphics card

One card, two very fast graphics chips

Internet Security Threat Report 2014

Moving on, the Sapphire 4850 X2 has a core speed of 625MHz with an effective memory speed of 1986MHz. It zipped through all the tests and compared very favourably with the GTX 280 in 3DMark and less well in Far Cry 2. We had the quality settings in Far Cry 2 set to Very High, which is a stern test but the 4850 X2 pulled through. The power draw was higher than GTX 280 in Windows at 165W but under load the figure was the same.

Power Draw Results

Sapphire HD 4850 X2 -Power Draw Results

Power draw in Watts
Nb. the two 4870 X2 scores use, respectively, the Catalyst 8.551.1.71310 and 8.11 drivers

We used the Catalyst 8.551.1.71310 driver to overclock the Sapphire to a core speed of 680MHz and memory speed of 2370MHz. This raised performance by ten per cent in 3DMark and Far Cry on DirectX 9 although this advantage dropped to a mere one frame per second in Far Cry 2 when we used DirectX 10.

The 4870 X2 uses the same technology as the 4850 X2 except that the core speed is higher - 750MHz - and the effective memory speed is a colossal 3600MHz due to the nature of GDDR 5 memory. This extra speed delivered 20-30 percent more performance in 3DMark compared to 4850 X2, and in Far Cry 2 the 4870 X2 delivered a few extra frames per second over 4850 X2. The power draw of the 4870 X2 is scarily high: 210W in Windows and 350W under load.

Just for larks, we hooked up the 4850 X2 and 4870 X2 in CrossFireX which cranked up 3DMark performance by a small amount. However, it clobbered performance in Far Cry 2, which pretty much sums up our experiences with CrossFire over the years.

The Sapphire HD 4850 X2 was horribly noisy because the drivers were only controlling one fan while the other fan roared away at full speed. Sapphire tells us that it will be releasing an updated Bios that will fix the noise issue in conjunction with a revised driver.

Verdict

The Sapphire HD 4850 X2 delivers the same performance as a single GTX 280 but unfortunately the horrendous dollar exchange rate means that they also cost the same. And that makes the Sapphire look far too complicated when it is compared to the Nvidia alternative.

Intelligent flash storage arrays

75%

Sapphire Radeon HD 4850 X2 dual-GPU graphics card

Sapphire rolls out a Radeon HD 4850 X2 with two GPUs and 2GB of memory. And a price tag north of £300.
Price: £317 RRP

More from The Register

next story
Chipmaker FTDI bricking counterfeit kit
USB-serial imitators whacked by driver update
Xperia Z3: Crikey, Sony – ANOTHER flagship phondleslab?
The Fourth Amendment... and it IS better
DOUBLE BONK: Testy fanbois catch Apple Pay picking pockets
Users wail as tapcash transactions are duplicated
Microsoft to enter the STRUGGLE of the HUMAN WRIST
It's not just a thumb war, it's total digit war
Google Glassholes are UNDATEABLE – HP exec
You need an emotional connection, says touchy-feely MD... We can do that
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.