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GeForce GTX 285 1GB vs GeForce GTX 580 3GB

Intro

The GeForce GTX 285 1GB features a GPU core speed of 648 MHz, and the 1024 MB of GDDR3 RAM runs at 1242 MHz through a 512-bit bus. It also is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare all of that to the GeForce GTX 580 3GB, which features a core clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also uses a 384-bit memory bus, and uses a 40 nm design. It is comprised of 512 SPUs, 64 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB 204 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 40 Watts (20%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 3GB should perform much faster than the GeForce GTX 285 1GB in general. (explain)

GeForce GTX 580 3GB 192384 MB/sec
GeForce GTX 285 1GB 158976 MB/sec
Difference: 33408 (21%)

Texel Rate

The GeForce GTX 285 1GB is a little bit (more or less 5%) more effective at anisotropic filtering than the GeForce GTX 580 3GB. (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
GeForce GTX 580 3GB 49408 Mtexels/sec
Difference: 2432 (5%)

Pixel Rate

The GeForce GTX 580 3GB should be quite a bit (about 79%) better at FSAA than the GeForce GTX 285 1GB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
GeForce GTX 285 1GB 20736 Mpixels/sec
Difference: 16320 (79%)

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.

Price Comparison

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GeForce GTX 285 1GB

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.

Specifications

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Model GeForce GTX 285 1GB GeForce GTX 580 3GB
Manufacturer nVidia nVidia
Year January 15, 2009 November 2010
Code Name G200b GF110
Memory 1024 MB 3072 MB
Core Speed 648 MHz 772 MHz
Memory Speed 2484 MHz 4008 MHz
Power (Max TDP) 204 watts 244 watts
Bandwidth 158976 MB/sec 192384 MB/sec
Texel Rate 51840 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 240 512
Texture Mapping Units 80 64
Render Output Units 32 48
Bus Type GDDR3 GDDR5
Bus Width 512-bit 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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be 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 better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied 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. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 1GB

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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