GeForce GTX 580 3GB vs Radeon HD 5770

Intro

The GeForce GTX 580 3GB makes use of a 40 nm design. nVidia has set the core speed at 772 MHz. The GDDR5 memory runs at a frequency of 1002 MHz on this specific card. It features 512 SPUs along with 64 Texture Address Units and 48 Rasterization Operator Units.

Compare that to the Radeon HD 5770, which comes with core speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 ROPs.

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 580 3GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5770 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 580 3GB	Radeon HD 5770
Manufacturer	nVidia	ATi
Year	November 2010	October 13, 2009
Code Name	GF110	Juniper XT
Fab Process	40 nm	40 nm
Bus	PCIe x16	PCIe 2.1 x16
Memory	3072 MB	1024 MB
Core Speed	772 MHz	850 MHz
Shader Speed	1544 MHz	(N/A) MHz
Memory Speed	1002 MHz (4008 MHz effective)	1200 MHz (4800 MHz effective)
Unified Shaders	512	800(160x5)
Texture Mapping Units	64	40
Render Output Units	48	16
Bus Type	GDDR5	GDDR5
Bus Width	384-bit	128-bit
DirectX Version	DirectX 11	DirectX 11
OpenGL Version	OpenGL 4.1	OpenGL 3.2
Power (Max TDP)	244 watts	108 watts
Shader Model	5.0	5.0
Bandwidth	192384 MB/sec	76800 MB/sec
Texel Rate	49408 Mtexels/sec	34000 Mtexels/sec
Pixel Rate	37056 Mpixels/sec	13600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 max fill rate.