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GeForce 8800 GTX vs Radeon HD 6850

Intro

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

Compare those specifications to the Radeon HD 6850, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also is comprised of 960 SPUs, 48 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6850 127 Watts
GeForce 8800 GTX 155 Watts
Difference: 28 Watts (22%)

Memory Bandwidth

The Radeon HD 6850, in theory, should perform much faster than the GeForce 8800 GTX overall. (explain)

Radeon HD 6850 128000 MB/sec
GeForce 8800 GTX 86400 MB/sec
Difference: 41600 (48%)

Texel Rate

The Radeon HD 6850 is a bit (approximately 1%) more effective at texture filtering than the GeForce 8800 GTX. (explain)

Radeon HD 6850 37200 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 400 (1%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6850 is a better choice, by a large margin. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 11000 (80%)

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 6850

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 6850
Manufacturer nVidia AMD
Year Nov 2006 October 2010
Code Name G80 Barts Pro
Memory 768 MB 1024 MB
Core Speed 575 MHz 775 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 155 watts 127 watts
Bandwidth 86400 MB/sec 128000 MB/sec
Texel Rate 36800 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 128 960
Texture Mapping Units 64 48
Render Output Units 24 32
Bus Type GDDR3 GDDR5
Bus Width 384-bit 256-bit
Fab Process 90 nm 40 nm
Transistors 681 million 1700 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

Amazon.com

Check prices at:

Radeon HD 6850

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 6850”
Nox media imon says:

[...] wordt vervangen door Ati giegelbitje 6850 ( dit voor dx11, rapper en minder stroom)is on the way.vergelijk GTX8800 vs Ati 6850 bovenplaat case ligt bij de plaatwerker hij 73mm verhoogt.. black ice 120 vervalt ook, na wat [...]

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