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GeForce 8800 GTX vs Radeon HD 6950 2GB

Intro

The GeForce 8800 GTX features clock speeds of 575 MHz on the GPU, and 900 MHz on the 768 MB of GDDR3 memory. It features 128 SPUs as well as 64 TAUs and 24 ROPs.

Compare those specs to the Radeon HD 6950 2GB, which features a core clock speed of 800 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit memory bus, and makes use of 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)

GeForce 8800 GTX 155 Watts
Radeon HD 6950 2GB 200 Watts
Difference: 45 Watts (29%)

Memory Bandwidth

The Radeon HD 6950 2GB, in theory, should be quite a bit faster than the GeForce 8800 GTX overall. (explain)

Radeon HD 6950 2GB 160000 MB/sec
GeForce 8800 GTX 86400 MB/sec
Difference: 73600 (85%)

Texel Rate

The Radeon HD 6950 2GB will be a lot (more or less 91%) faster with regards to AF than the GeForce 8800 GTX. (explain)

Radeon HD 6950 2GB 70400 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 33600 (91%)

Pixel Rate

The Radeon HD 6950 2GB is a lot (approximately 86%) more effective at AA than the GeForce 8800 GTX, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6950 2GB 25600 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 11800 (86%)

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 8800 GTX

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 8800 GTX Radeon HD 6950 2GB
Manufacturer nVidia AMD
Year Nov 2006 December 2010
Code Name G80 Cayman Pro
Memory 768 MB 2048 MB
Core Speed 575 MHz 800 MHz
Memory Speed 1800 MHz 5000 MHz
Power (Max TDP) 155 watts 200 watts
Bandwidth 86400 MB/sec 160000 MB/sec
Texel Rate 36800 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 128 1408
Texture Mapping Units 64 88
Render Output Units 24 32
Bus Type GDDR3 GDDR5
Bus Width 384-bit 256-bit
Fab Process 90 nm 40 nm
Transistors 681 million 2640 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

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 8800 GTX vs Radeon HD 6950 2GB”
Ctsephion says:

Wow, quite the upgrade!

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