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GeForce GTX 285 1GB vs Radeon HD 6950 2GB

Intro

The GeForce GTX 285 1GB makes use of a 55 nm design. nVidia has set the core frequency at 648 MHz. The GDDR3 RAM works at a speed of 1242 MHz on this card. It features 240 SPUs as well as 80 Texture Address Units and 32 ROPs.

Compare that to the Radeon HD 6950 2GB, which has a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It is comprised of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB 200 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

The Radeon HD 6950 2GB should theoretically perform a small bit faster than the GeForce GTX 285 1GB in general. (explain)

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

Texel Rate

The Radeon HD 6950 2GB is much (more or less 36%) faster with regards to anisotropic filtering than the GeForce GTX 285 1GB. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 18560 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6950 2GB is the winner, by a large margin. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce GTX 285 1GB 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 1GB

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 1GB Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year January 15, 2009 December 2010
Code Name G200b Cayman Pro
Memory 1024 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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 1GB

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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