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GeForce 8800 GT 1GB vs Radeon HD 5670


The GeForce 8800 GT 1GB makes use of a 65 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific model. It features 112 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 5670, which features clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
GeForce 8800 GT 1GB 105 Watts
Difference: 44 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5670 will be 11% quicker than the GeForce 8800 GT 1GB overall, because of its greater bandwidth. (explain)

Radeon HD 5670 64000 MB/sec
GeForce 8800 GT 1GB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The GeForce 8800 GT 1GB is a lot (more or less 117%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 18100 (117%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GT 1GB is superior to the Radeon HD 5670, by a large margin. (explain)

GeForce 8800 GT 1GB 9600 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 3400 (55%)

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 GT 1GB

Radeon HD 5670

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.


Display Specifications

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Model GeForce 8800 GT 1GB Radeon HD 5670
Manufacturer nVidia AMD
Year Dec 2007 January 14, 2010
Code Name G92 Redwood XT
Memory 1024 MB 1024 MB
Core Speed 600 MHz 775 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 105 watts 61 watts
Bandwidth 57600 MB/sec 64000 MB/sec
Texel Rate 33600 Mtexels/sec 15500 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 6200 Mpixels/sec
Unified Shaders 112 400(80x5)
Texture Mapping Units 56 20
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 627 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one 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 - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.


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