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GeForce 8800 GTS (G92) vs Radeon HD 4830 1GB

Intro

The GeForce 8800 GTS (G92) makes use of a 65 nm design. nVidia has clocked the core speed at 650 MHz. The GDDR3 memory runs at a frequency of 970 MHz on this particular model. It features 128 SPUs as well as 64 TAUs and 16 ROPs.

Compare those specs to the Radeon HD 4830 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 575 MHz. The GDDR4 RAM runs at a speed of 900 MHz on this particular model. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB 95 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 40 Watts (42%)

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G92) should perform a little bit faster than the Radeon HD 4830 1GB in general. (explain)

GeForce 8800 GTS (G92) 62080 MB/sec
Radeon HD 4830 1GB 57600 MB/sec
Difference: 4480 (8%)

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (about 126%) more effective at anisotropic filtering than the Radeon HD 4830 1GB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 4830 1GB 18400 Mtexels/sec
Difference: 23200 (126%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 GTS (G92) is the winner, but not by far. (explain)

GeForce 8800 GTS (G92) 10400 Mpixels/sec
Radeon HD 4830 1GB 9200 Mpixels/sec
Difference: 1200 (13%)

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 GTS (G92)

Amazon.com

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Radeon HD 4830 1GB

Amazon.com

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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 GTS (G92) Radeon HD 4830 1GB
Manufacturer nVidia AMD
Year Dec 2007 Oct 21, 2008
Code Name G92 RV770 LE
Memory 512 MB 1024 MB
Core Speed 650 MHz 575 MHz
Memory Speed 1940 MHz 1800 MHz
Power (Max TDP) 135 watts 95 watts
Bandwidth 62080 MB/sec 57600 MB/sec
Texel Rate 41600 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 128 640(128x5)
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR4
Bus Width 256-bit 256-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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G92)

Amazon.com

Check prices at:

Radeon HD 4830 1GB

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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