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GeForce GTX 285 2GB vs Radeon HD 5870

Intro

The GeForce GTX 285 2GB features clock speeds of 648 MHz on the GPU, and 1242 MHz on the 2048 MB of GDDR3 memory. It features 240 SPUs as well as 80 TAUs and 32 ROPs.

Compare that to the Radeon HD 5870, which comes with clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 1600(320x5) SPUs as well as 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 16 Watts (9%)

Memory Bandwidth

The GeForce GTX 285 2GB, in theory, should perform a little bit faster than the Radeon HD 5870 in general. (explain)

GeForce GTX 285 2GB 158976 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 5376 (4%)

Texel Rate

The Radeon HD 5870 is much (more or less 31%) faster with regards to texture filtering than the GeForce GTX 285 2GB. (explain)

Radeon HD 5870 68000 Mtexels/sec
GeForce GTX 285 2GB 51840 Mtexels/sec
Difference: 16160 (31%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5870 is the winner, by a large margin. (explain)

Radeon HD 5870 27200 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 6464 (31%)

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 2GB

Amazon.com

Check prices at:

Radeon HD 5870

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 2GB Radeon HD 5870
Manufacturer nVidia AMD
Year January 15, 2009 September 23, 2009
Code Name G200b Cypress XT
Memory 2048 MB 1024 MB
Core Speed 648 MHz 850 MHz
Memory Speed 2484 MHz 4800 MHz
Power (Max TDP) 204 watts 188 watts
Bandwidth 158976 MB/sec 153600 MB/sec
Texel Rate 51840 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 240 1600(320x5)
Texture Mapping Units 80 80
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 2154 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 most pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon HD 5870

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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