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GeForce GTX 285 2GB vs Radeon HD 6950

Intro

The GeForce GTX 285 2GB has a GPU core speed of 648 MHz, and the 2048 MB of GDDR3 RAM is set to run at 1242 MHz through a 512-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon HD 6950, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also features 1408 Stream Processors, 88 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 200 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

In theory, the Radeon HD 6950 should be just a bit faster than the GeForce GTX 285 2GB overall. (explain)

Radeon HD 6950 160000 MB/sec
GeForce GTX 285 2GB 158976 MB/sec
Difference: 1024 (1%)

Texel Rate

The Radeon HD 6950 will be much (about 36%) better at AF than the GeForce GTX 285 2GB. (explain)

Radeon HD 6950 70400 Mtexels/sec
GeForce GTX 285 2GB 51840 Mtexels/sec
Difference: 18560 (36%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6950 is the winner, and very much so. (explain)

Radeon HD 6950 25600 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 4864 (23%)

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 6950

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 6950
Manufacturer nVidia AMD
Year January 15, 2009 December 2010
Code Name G200b Cayman Pro
Memory 2048 MB 1024 MB
Core Speed 648 MHz 800 MHz
Memory Speed 2484 MHz 5000 MHz
Power (Max TDP) 204 watts 200 watts
Bandwidth 158976 MB/sec 160000 MB/sec
Texel Rate 51840 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 240 1408
Texture Mapping Units 80 88
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 2640 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon HD 6950

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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