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

Intro

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

Display Graphs

Hide Graphs

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

In theory, the GeForce 8800 GTS (G92) should be a little bit faster than the Radeon HD 4830 512MB overall. (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) is quite a bit (approximately 126%) more effective at AF 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

If running with a high screen resolution is important to you, then the GeForce 8800 GTS (G92) is a better choice, not by a very large margin though. (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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, 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 the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.