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GeForce GTX 285 1GB vs GeForce GTX 580 3GB

Intro

The GeForce GTX 285 1GB has a GPU core speed of 648 MHz, and the 1024 MB of GDDR3 memory runs at 1242 MHz through a 512-bit bus. It also is made up of 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Compare those specifications to the GeForce GTX 580 3GB, which has core speeds of 772 MHz on the GPU, and 1002 MHz on the 3072 MB of GDDR5 memory. It features 512 SPUs along with 64 TAUs and 48 Rasterization Operator Units.

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

The GeForce GTX 580 3GB should theoretically be a lot 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 will be a little bit (approximately 5%) better at texture 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 a lot (about 79%) faster with regards to anti-aliasing than the GeForce GTX 285 1GB, and should be able to handle higher resolutions while still performing well. (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 information (counted in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the 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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