Final thoughts and rating
Oftentimes we've lambasted multi-GPU graphics-card setups as a general waste of money, pointing our readers in the direction of the fastest single-GPU card that their budget allows them to buy.However, of late, both ATI and NVIDIA have cleaned up their multi-GPU acts, and scaling in popular games is such that adding a second GPU - be it on the PCB itself or via another card - makes implicit sense if the value proposition is just right.
The sub-£100 Sapphire Radeon HD 4830 512MB validates this point by providing reasonable high-end gaming performance on its own but practically doubling average framerate when another is added.
Despite initial misgivings, we're impressed with how well Sapphire's non-reference cooler works, and would recommend the company adding a software-based tool that lets the user modulate the speed of the fan(s) to suit their aural taste.
Additional performance derived by a second card gives cumulative numbers, over our four games, which are equal to a pre-overclocked GeForce GTX 280, but the win here is with a substantially lower street price - £200 vs. £330 - and multi-monitor outputs.
Yes, you need to have a CrossFire-supporting motherboard and some games may not show the kind of scaling we've seen in our testing, but a combined £200 buys you smooth performance at 2,560x1,600 HQ settings. Kind of begs the question as to whether Sapphire will launch a Radeon HD 4830 X2, priced at around £180, doesn't it?
We'll be taking a look at a couple of GeForce 9800 GTs and seeing how the price/performance proposition plays out in comparison, but, perhaps, multi-GPU setups finally make good sense when the underlying technology is priced so aggressively.
Of course, save up a few more pennies - £30, to be exact - and a couple of Radeon HD 4850 512MB can be yours.....
The good
Excellent performance in a dual-card setupAttractive price
Decent overclocking for the core
Low temperatures
The not so good
Dual-slot cooler may impede installation in small chassisSlightly noisy in both 2D and 3D modes
HEXUS Rating
HEXUS.net scores products out of 100%, taking into account technology, implementation, stability, performance, value, customer care and desirability. A score for an average-rated product is a meaningful ‘50%’, and not ‘90%’, which is common practice for a great many other publications.
We consider any product score above '50%' as a safe buy. The higher the score, the higher the recommendation from HEXUS to buy. Simple, straightforward buying advice.

HEXUS Where2Buy
A single card is currently available for
£99.99 here.
Double it for two.
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