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GeForce GTX 470 vs Radeon HD 6950 2GB

Intro

The GeForce GTX 470 uses a 40 nm design. nVidia has set the core frequency at 607 MHz. The GDDR5 RAM is set to run at a frequency of 837 MHz on this card. It features 448 SPUs along with 56 Texture Address Units and 40 Rasterization Operator Units.

Compare those specs to the Radeon HD 6950 2GB, which comes with GPU clock speed of 800 MHz, and 2048 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is comprised of 1408 Stream Processors, 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 470 215 Watts
Difference: 15 Watts (8%)

Memory Bandwidth

The Radeon HD 6950 2GB should in theory perform a small bit faster than the GeForce GTX 470 in general. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce GTX 470 133920 MB/sec
Difference: 26080 (19%)

Texel Rate

The Radeon HD 6950 2GB is quite a bit (more or less 107%) more effective at texture filtering than the GeForce GTX 470. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 36408 (107%)

Pixel Rate

The Radeon HD 6950 2GB is just a bit (approximately 5%) more effective at FSAA than the GeForce GTX 470, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce GTX 470 24280 Mpixels/sec
Difference: 1320 (5%)

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 470

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 470 Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year March 2010 December 2010
Code Name GF100 Cayman Pro
Memory 1280 MB 2048 MB
Core Speed 607 MHz 800 MHz
Memory Speed 3348 MHz 5000 MHz
Power (Max TDP) 215 watts 200 watts
Bandwidth 133920 MB/sec 160000 MB/sec
Texel Rate 33992 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 448 1408
Texture Mapping Units 56 88
Render Output Units 40 32
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 2640 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 max fill rate.

Display Prices

Hide Prices

GeForce GTX 470

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.

Comments

One Response to “GeForce GTX 470 vs Radeon HD 6950 2GB”
graphics card says:

[...] permalink Howdy! I choyce whould be in 250$ range some ATI HD6950 2GB version. Its more powerful than GTX470. Here is some tests: http://www.hwcompare.com/8625/geforc...n-hd-6950-2gb/ [...]

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