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GeForce GTX 285 2GB vs Radeon HD 5870

Intro

The GeForce GTX 285 2GB comes with 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 Rasterization Operator Units.

Compare that to the Radeon HD 5870, which comes with a clock frequency of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1600(320x5) SPUs, 80 TAUs, and 32 Raster Operation Units.

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

As far as performance goes, the GeForce GTX 285 2GB should theoretically be just a bit better than the Radeon HD 5870 overall. (explain)

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

Texel Rate

The Radeon HD 5870 is quite a bit (approximately 31%) more effective at AF 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 running with a high resolution is important to you, then the Radeon HD 5870 is superior to the GeForce GTX 285 2GB, by far. (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 largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max 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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