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GeForce GTX 280 vs Radeon HD 6950 2GB

Intro

The GeForce GTX 280 comes with a core clock frequency of 602 MHz and a GDDR3 memory frequency of 1107 MHz. It also uses a 512-bit memory bus, and makes use of a 65 nm design. It is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6950 2GB, which features GPU core speed of 800 MHz, and 2048 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is comprised of 1408 Stream Processors, 88 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB 200 Watts
GeForce GTX 280 236 Watts
Difference: 36 Watts (18%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6950 2GB should in theory be a small bit better than the GeForce GTX 280 overall. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 18304 (13%)

Texel Rate

The Radeon HD 6950 2GB should be quite a bit (about 46%) more effective at anisotropic filtering than the GeForce GTX 280. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 22240 (46%)

Pixel Rate

The Radeon HD 6950 2GB is a lot (more or less 33%) more effective at anti-aliasing than the GeForce GTX 280, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 6336 (33%)

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 280

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 280 Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year June 17, 2008 December 2010
Code Name G200 Cayman Pro
Memory 1024 MB 2048 MB
Core Speed 602 MHz 800 MHz
Memory Speed 2214 MHz 5000 MHz
Power (Max TDP) 236 watts 200 watts
Bandwidth 141696 MB/sec 160000 MB/sec
Texel Rate 48160 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 19264 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 65 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 information (in units of MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 280

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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