GeForce GTX 470 vs Radeon HD 4830 512MB

Intro

Compare all of that to the Radeon HD 4830 512MB, which uses a 55 nm design. AMD has set the core frequency at 575 MHz. The GDDR3 memory is set to run at a frequency of 900 MHz on this card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX 470		215 Watts
	Difference: 120 Watts (126%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 470 should perform quite a bit faster than the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 470		133920 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 76320 (133%)

Texel Rate

The GeForce GTX 470 is much (approximately 85%) more effective at anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 470		33992 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 15592 (85%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 470 is superior to the Radeon HD 4830 512MB, and very much so. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 15080 (164%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.