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GeForce 8800 GTX vs Radeon HD 6950 2GB

Intro

The GeForce 8800 GTX features a core clock frequency of 575 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 384-bit memory bus, and uses a 90 nm design. It is made up of 128 SPUs, 64 TAUs, and 24 ROPs.

Compare those specs to the Radeon HD 6950 2GB, which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 1408 SPUs as well as 88 TAUs and 32 ROPs.

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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

Theoretically speaking, the Radeon HD 6950 2GB should perform much faster than the GeForce 8800 GTX in general. (explain)

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

Texel Rate

The Radeon HD 6950 2GB is a lot (approximately 91%) more effective at texture filtering than the GeForce 8800 GTX. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6950 2GB is the winner, by far. (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 maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type 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 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 in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to 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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