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GeForce 8800 GTS (G92) vs Radeon HD 4830 512MB

Intro

The GeForce 8800 GTS (G92) makes use of a 65 nm design. nVidia has set the core frequency at 650 MHz. The GDDR3 memory runs at a frequency of 970 MHz on this particular model. It features 128 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Compare that to the Radeon HD 4830 512MB, which features a core clock speed of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB 95 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 40 Watts (42%)

Memory Bandwidth

The GeForce 8800 GTS (G92) should theoretically be a bit faster than the Radeon HD 4830 512MB in general. (explain)

GeForce 8800 GTS (G92) 62080 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 4480 (8%)

Texel Rate

The GeForce 8800 GTS (G92) will be a lot (approximately 126%) faster with regards to anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 23200 (126%)

Pixel Rate

The GeForce 8800 GTS (G92) will be just a bit (more or less 13%) more effective at AA than the Radeon HD 4830 512MB, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce 8800 GTS (G92) 10400 Mpixels/sec
Radeon HD 4830 512MB 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

Check prices at:

Radeon HD 4830 512MB

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 GTS (G92) Radeon HD 4830 512MB
Manufacturer nVidia AMD
Year Dec 2007 Oct 21, 2008
Code Name G92 RV770 LE
Memory 512 MB 512 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 GDDR3
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 data (counted in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 card will be at 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 the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G92)

Amazon.com

Check prices at:

Radeon HD 4830 512MB

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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