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GeForce GTX 285 1GB vs GeForce GTX 580 3GB

Intro

The GeForce GTX 285 1GB makes use of a 55 nm design. nVidia has clocked the core speed at 648 MHz. The GDDR3 RAM is set to run at a speed of 1242 MHz on this particular model. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

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

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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

The GeForce GTX 580 3GB should theoretically perform much faster than the GeForce GTX 285 1GB overall. (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 will be a bit (about 5%) faster with regards to 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 much (approximately 79%) better at FSAA than the GeForce GTX 285 1GB, and will be capable of handling higher screen resolutions better. (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 largest amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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