GeForce GTX 570 vs Radeon HD 4890 2GB

Intro

The GeForce GTX 570 has a GPU clock speed of 732 MHz, and the 1280 MB of GDDR5 RAM runs at 950 MHz through a 320-bit bus. It also is made up of 480 Stream Processors, 60 TAUs, and 40 Raster Operation Units.

Compare all that to the Radeon HD 4890 2GB, which makes use of a 55 nm design. ATi has set the core speed at 1000 MHz. The GDDR5 memory runs at a speed of 975 MHz on this specific card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GTX 570 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4890 2GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 570	Radeon HD 4890 2GB
Manufacturer	nVidia	ATi
Year	December 2010	Apr 2, 2009
Code Name	GF110	RV790 XT
Fab Process	40 nm	55 nm
Bus	PCIe x16	PCIe 2.0 x16
Memory	1280 MB	2048 MB
Core Speed	732 MHz	1000 MHz
Shader Speed	1464 MHz	(N/A) MHz
Memory Speed	950 MHz	975 MHz
Unified Shaders	480	800(160x5)
Texture Mapping Units	60	40
Render Output Units	40	16
Bus Type	GDDR5	GDDR5
Bus Width	320-bit	256-bit
DirectX Version	DirectX 11	DirectX 10.1
OpenGL Version	OpenGL 4.1	OpenGL 3.0
Power (Max TDP)	219 watts	190 watts
Shader Model	5.0	4.1
Bandwidth	152000 MB/sec	124800 MB/sec
Texel Rate	43920 Mtexels/sec	40000 Mtexels/sec
Pixel Rate	29280 Mpixels/sec	16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.