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GeForce GTX 285 1GB vs Radeon HD 6950

Intro

The GeForce GTX 285 1GB comes with a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also makes use of a 512-bit memory bus, and uses a 55 nm design. It is comprised of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6950, which has a clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is made up 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 200 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 will be 1% faster than the GeForce GTX 285 1GB in general, due to its greater bandwidth. (explain)

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

Texel Rate

The Radeon HD 6950 will be a lot (more or less 36%) better at anisotropic filtering than the GeForce GTX 285 1GB. (explain)

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

Pixel Rate

The Radeon HD 6950 is much (about 23%) faster with regards to FSAA than the GeForce GTX 285 1GB, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6950 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

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
Manufacturer nVidia AMD
Year January 15, 2009 December 2010
Code Name G200b Cayman Pro
Memory 1024 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: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number 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 worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory 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

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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