GeForce GT 430 (OEM) vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which has a clock frequency of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It features 640(128x5) SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 (OEM)		60 Watts
Radeon HD 4830 512MB		95 Watts
	Difference: 35 Watts (58%)

Memory Bandwidth

The Radeon HD 4830 512MB, in theory, should perform a lot faster than the GeForce GT 430 (OEM) in general. (explain)

Radeon HD 4830 512MB		57600 MB/sec
GeForce GT 430 (OEM)		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The Radeon HD 4830 512MB should be much (about 64%) faster with regards to texture filtering than the GeForce GT 430 (OEM). (explain)

Radeon HD 4830 512MB		18400 Mtexels/sec
GeForce GT 430 (OEM)		11200 Mtexels/sec
	Difference: 7200 (64%)

Pixel Rate

The Radeon HD 4830 512MB will be quite a bit (approximately 229%) more effective at full screen anti-aliasing than the GeForce GT 430 (OEM), and capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 4830 512MB		9200 Mpixels/sec
GeForce GT 430 (OEM)		2800 Mpixels/sec
	Difference: 6400 (229%)

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 largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 can be applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at 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 could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.