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

Intro

The GeForce 8800 GTS (G92) comes with a GPU core speed of 650 MHz, and the 512 MB of GDDR3 memory runs at 970 MHz through a 256-bit bus. It also features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specs to the Radeon HD 4830 1GB, which has a core clock frequency of 575 MHz and a GDDR4 memory frequency of 900 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

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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

The GeForce 8800 GTS (G92), in theory, should perform a 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) should be much (approximately 126%) faster with regards to AF 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

The GeForce 8800 GTS (G92) is a little bit (approximately 13%) more effective at AA than the Radeon HD 4830 1GB, and also should be able to handle higher resolutions without losing too much performance. (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

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.

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: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum 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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