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GeForce GTX 285 1GB vs Radeon HD 6950 2GB

Intro

The GeForce GTX 285 1GB features a core clock speed of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also uses a 512-bit bus, and uses a 55 nm design. It features 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6950 2GB, which comes with GPU core speed of 800 MHz, and 2048 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is comprised of 1408 SPUs, 88 TAUs, 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

Theoretically speaking, the Radeon HD 6950 2GB is 1% quicker than the GeForce GTX 285 1GB overall, due to its higher bandwidth. (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 quite a bit (approximately 36%) faster with regards to texture 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

The Radeon HD 6950 2GB is a lot (about 23%) faster with regards to FSAA than the GeForce GTX 285 1GB, and also will be capable of handling higher resolutions without losing too much performance. (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 maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max 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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