GeForce GTX 295 vs GeForce GTX 580

Intro

The GeForce GTX 295 comes with a GPU clock speed of 576 MHz, and the 896 MB of GDDR3 memory is set to run at 999 MHz through a 448-bit bus. It also is made up of 240 Stream Processors, 80 TAUs, and 28 ROPs.

Compare those specs to the GeForce GTX 580, which features a GPU core clock speed of 772 MHz, and 1536 MB of GDDR5 RAM set to run at 1002 MHz through a 384-bit bus. It also features 512 Stream Processors, 64 TAUs, and 48 Raster Operation 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 295 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

GeForce GTX 580 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce GTX 295	GeForce GTX 580
Manufacturer	nVidia	nVidia
Year	January 8, 2009	November 2010
Code Name	G200b	GF110
Fab Process	55 nm	40 nm
Bus	PCIe x16 2.0	PCIe x16
Memory	896 MB (x2)	1536 MB
Core Speed	576 MHz (x2)	772 MHz
Shader Speed	1242 MHz (x2)	1544 MHz
Memory Speed	999 MHz (x2)	1002 MHz
Unified Shaders	240 (x2)	512
Texture Mapping Units	80 (x2)	64
Render Output Units	28 (x2)	48
Bus Type	GDDR3	GDDR5
Bus Width	448-bit (x2)	384-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.1	OpenGL 4.1
Power (Max TDP)	289 watts	244 watts
Shader Model	4.0	5.0
Bandwidth	223776 MB/sec	192384 MB/sec
Texel Rate	92160 Mtexels/sec	49408 Mtexels/sec
Pixel Rate	32256 Mpixels/sec	37056 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.