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GeForce GTX 295 vs GeForce GTX 580 3GB

Intro

The GeForce GTX 295 makes use of a 55 nm design. nVidia has set the core frequency at 576 MHz. The GDDR3 memory works at a speed of 999 MHz on this particular card. It features 240 SPUs as well as 80 TAUs and 28 Rasterization Operator Units.

Compare all that to the GeForce GTX 580 3GB, which features core clock speeds of 772 MHz on the GPU, and 1002 MHz on the 3072 MB of GDDR5 memory. It features 512 SPUs as well as 64 TAUs and 48 Rasterization Operator Units.

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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 little bit faster than the GeForce GTX 580 3GB in general. (explain)

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

Texel Rate

The GeForce GTX 295 should be quite a bit (approximately 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

The GeForce GTX 580 3GB is a little bit (about 15%) faster with regards to full screen anti-aliasing than the GeForce GTX 295, and will be able to handle higher screen resolutions while still performing well. (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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max 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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