GeForce GTX 460 vs Radeon HD 4830 1GB

Intro

Compare all of that to the Radeon HD 4830 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 575 MHz. The GDDR4 memory works at a speed of 900 MHz on this specific card. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB		95 Watts
GeForce GTX 460		150 Watts
	Difference: 55 Watts (58%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 is 50% quicker than the Radeon HD 4830 1GB in general, due to its greater bandwidth. (explain)

GeForce GTX 460		86400 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 28800 (50%)

Texel Rate

The GeForce GTX 460 will be a lot (more or less 105%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)

GeForce GTX 460		37800 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 19400 (105%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 is superior to the Radeon HD 4830 1GB, by far. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 7000 (76%)

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 MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock 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 memory bandwidth is, the lower the potential to get to the max fill rate.