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ASUS Matrix 5870 + PowerColor 5870 PCS+ in CrossfireX
Written by Michael Schuette   
Jun 20, 2010 at 04:01 AM


What happens if one takes two RADEON 5870 non-reference designs running at different core and memory frequencies, not to mention different memory configurations, and runs them in CrossfireX mode? The candidates in this case are the ASUS MATRIX 5870 Platinum Edition and the PowerColor PCS+ RADEON 5870. The MATRIX runs its core / memory at 900 / 1200 MHz and features the full-blown 2 GB local frame buffer supported by the design, whereas the PCS+ is clocking the core at 875 MHz but pushes the memory frequency up to 1250 MHz for a whopping 5000 Mbps. The reason we are asking is simply that the market often enough dictates the purchase and whatever is on sale may or may not be compatible with another card that is already in the system. Theoretically, there shouldn't be much of a problem but reality bites more often than not.

The next question is about scaling in crossfire mode. How much performance increase is delivered by the two cards in tandem and in which applications? We ran an entire gamut of synthetic and real world gaming applications to have the answers.

Last Updated ( Jul 18, 2010 at 02:11 PM )
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ASUS ROG Matrix 5870 Platinum Edition
Written by Michael Schuette   
Jun 07, 2010 at 11:23 PM


The graphics market has for the longest time pretty much been dominated by AMD's offerings in the 5700 and 5800 series. However, nVidia is not dead, in fact, the Fermi-based graphics cards are poised to rekindle some of the "brand loyalty" that was based on the superior performance and corporate marketing of nVidia. In other words, don't sit on your ass just because the competition has had an unlucky streak. The best thing to do in that case is to create internal competition or fragmentation of the market through the channel partners that take a reference design, re-spin it to their liking based on cost, performance, noise suppression, features or any combination of the four mentioned parameters. The result is a variety of offerings that was never achieved when ATI still had their iron grip on the RADEON series and, quite honestly, we don't miss those days where the main differentiator was the color of the heat sink anodizing.

Last Updated ( Jun 22, 2010 at 09:53 AM )
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Lessons From A Life With nia
Written by Michael Schuette   
May 18, 2010 at 04:12 PM


The last three years have been more or less consumed by the development, refining and productization of OCZs Neural Impulse Actuator (nia), the world’s first commercially available, mass-produced BCI device. Among other things, one of the most challenging issues was to understand how and where some of the signals used by the nia are generated in the brain. More interesting was to see how following certain interpretations of brain activity patterns can be used to elicit very specific responses, a simple example would be thinking of specific movements to trigger beta brain waves in the motor cortex.

After numerous discussions and reading up on the latest progress in brain research along with being asked to put things a bit more into perspective, I embarked on the adventure to attempt to clarify some definitions and conventions that are, arguably, a bit confusing. All of this is done “through the eyes of the nia”.

Last Updated ( Jun 08, 2010 at 03:52 AM )
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