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GeForce GTX 285 2GB vs Radeon HD 6950 2GB

Intro

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

Compare those specifications to the Radeon HD 6950 2GB, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 memory. It features 1408 SPUs as well as 88 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon HD 6950 2GB should be 1% quicker than the GeForce GTX 285 2GB in general, because of its higher data rate. (explain)

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

Texel Rate

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

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

Pixel Rate

The Radeon HD 6950 2GB should be much (about 23%) more effective at anti-aliasing than the GeForce GTX 285 2GB, and also capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6950 2GB 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 2GB

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 2GB
Manufacturer nVidia AMD
Year January 15, 2009 December 2010
Code Name G200b Cayman Pro
Memory 2048 MB 2048 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 maximum amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon HD 6950 2GB

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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