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GeForce GTX 295 vs GeForce GTX 580 3GB

Intro

The GeForce GTX 295 features core speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs along with 80 TAUs and 28 ROPs.

Compare that to the GeForce GTX 580 3GB, which uses a 40 nm design. nVidia has clocked the core speed at 772 MHz. The GDDR5 memory is set to run at a frequency of 1002 MHz on this model. It features 512 SPUs as well as 64 TAUs and 48 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580 3GB 244 Watts
GeForce GTX 295 289 Watts
Difference: 45 Watts (18%)

Memory Bandwidth

In theory, the GeForce GTX 295 should be a small bit faster than the GeForce GTX 580 3GB overall. (explain)

GeForce GTX 295 223776 MB/sec
GeForce GTX 580 3GB 192384 MB/sec
Difference: 31392 (16%)

Texel Rate

The GeForce GTX 295 is a lot (about 87%) more effective at texture filtering than the GeForce GTX 580 3GB. (explain)

GeForce GTX 295 92160 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 42752 (87%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 580 3GB is superior to the GeForce GTX 295, though only just barely. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
GeForce GTX 295 32256 Mpixels/sec
Difference: 4800 (15%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 295

Amazon.com

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GeForce GTX 580 3GB

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 295 GeForce GTX 580 3GB
Manufacturer nVidia nVidia
Year January 8, 2009 November 2010
Code Name G200b GF110
Memory 896 MB (x2) 3072 MB
Core Speed 576 MHz (x2) 772 MHz
Memory Speed 1998 MHz (x2) 4008 MHz
Power (Max TDP) 289 watts 244 watts
Bandwidth 223776 MB/sec 192384 MB/sec
Texel Rate 92160 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 37056 Mpixels/sec
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
Fab Process 55 nm 40 nm
Transistors 1400 million 3000 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are 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 the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's 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 memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 295

Amazon.com

Check prices at:

GeForce GTX 580 3GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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