Featured Articles

Intel refreshes CPU roadmap

Intel refreshes CPU roadmap

Intel has revealed an update to its CPU roadmap and some things have changed in 2015 and beyond. Let’s start with the…

More...
Hands on: Nvidia Shield Tablet with Android 5.0

Hands on: Nvidia Shield Tablet with Android 5.0

We broke the news of Nvidia's ambitious gaming tablet plans back in May and now the Shield tablet got a bit…

More...
Nokia N1 Android tablet ships in Q1 2015

Nokia N1 Android tablet ships in Q1 2015

Nokia has announced its first Android tablet and when we say Nokia, we don’t mean Microsoft. The Nokia N1 was designed…

More...
Marvell launches octa-core 64-bit PXA1936

Marvell launches octa-core 64-bit PXA1936

Marvell is better known for its storage controllers, but the company doesn’t want to give up on the smartphone and…

More...
Nvidia GTX 970 SLI tested

Nvidia GTX 970 SLI tested

Nvidia recently released two new graphics cards based on its latest Maxwell GPU architecture, with exceptional performance-per-watt. The Geforce GTX 970…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Monday, 30 April 2007 09:58

Radeon HD 2000 supports Vec5 superscalar

Written by Fuad Abazovic

Image

320 SPs up to 40 percent faster than G80 (in theory)


Until today we believed that the R600 is a Vec4+1 scalar chip, which sounded very inefficient to us. We had a chance to take a peak at some DAAMIT documents and learned that ATI wants to present the R600 as a superscalar chip with 5 instructions per clock.


Previous ATI hardware, including the Radeon 9600, 9700, 9800 and X series could handle two instructions per clock with 3+1 or 4+1 components.

The Radeon HD 2000 series supports Superscalar marchitecture and it means that with Vec5 or Superscalar, ATI can process 5 scalar instructions per clock. It has 64 Unified Shaders and by multiplying these two numbers you end up with the amazing number of 320 Stream processors.

The Nvidia G80 GTX can only handle Vec4 instruction in a scalable way, or four independent instructions, and it looks like ATI might have an advantage here. Nvidia can process 128 Stream processor instructions, but at the much higher clock speed of 1.35 GHz, while the R600 can do 320 Stream instructions per clock, but at close to half the speed or 750 MHz.

In raw numbers, the G80 at GTX clocks can handle 172.800 Millions of instructions or Shaders if you like, while the R600 can handle 240.000 Million Shaders per clock. If this turns to be right, ATI could run Shader instructions - especially the unified ones - up to forty per cent faster.

Well, this will only be noticeable in next generation games and benchmarks, so you still have some time to wait for this revolution.   

Last modified on Monday, 30 April 2007 11:21
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments