GeForce GTX 460 (OEM) vs Radeon HD 4830 1GB

Intro

Compare those specs to the Radeon HD 4830 1GB, which makes use of a 55 nm design. AMD has set the core speed at 575 MHz. The GDDR4 RAM runs at a frequency of 900 MHz on this specific card. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should perform a lot faster than the Radeon HD 4830 1GB in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 51200 (89%)

Texel Rate

The GeForce GTX 460 (OEM) is quite a bit (more or less 98%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 18000 (98%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 (OEM) is a better choice, and very much so. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 11600 (126%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.