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GeForce 8800 GT 512MB vs Radeon HD 4730

Intro

The GeForce 8800 GT 512MB features a clock frequency of 600 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and makes use of a 65 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 4730, which makes use of a 55 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory works at a frequency of 900 MHz on this model. It features 640(128x5) SPUs as well as 32 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB 105 Watts
Radeon HD 4730 140 Watts
Difference: 35 Watts (33%)

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should have identical performance. (explain)

Texel Rate

The GeForce 8800 GT 512MB will be much (about 50%) more effective at AF than the Radeon HD 4730. (explain)

GeForce 8800 GT 512MB 33600 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 11200 (50%)

Pixel Rate

The GeForce 8800 GT 512MB will be a lot (more or less 71%) faster with regards to FSAA than the Radeon HD 4730, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 8800 GT 512MB 9600 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 4000 (71%)

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 512MB

Amazon.com

Check prices at:

Radeon HD 4730

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 GT 512MB Radeon HD 4730
Manufacturer nVidia AMD
Year Oct 2007 Jun 8, 2009
Code Name G92 RV770/CE
Memory 512 MB 512 MB
Core Speed 600 MHz 700 MHz
Memory Speed 1800 MHz 3600 MHz
Power (Max TDP) 105 watts 140 watts
Bandwidth 57600 MB/sec 57600 MB/sec
Texel Rate 33600 Mtexels/sec 22400 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 5600 Mpixels/sec
Unified Shaders 112 640(128x5)
Texture Mapping Units 56 32
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 55 nm
Transistors 754 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 8800 GT 512MB

Amazon.com

Check prices at:

Radeon HD 4730

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.

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