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 is set to run at a frequency of 900 MHz on this particular card. It features 640(128x5) SPUs as well as 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 (OEM)		150 Watts
	Difference: 55 Watts (58%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 (OEM) should in theory be a lot superior to 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) will be much (approximately 98%) more effective at anisotropic filtering 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 using high levels of AA is important to you, then the GeForce GTX 460 (OEM) is superior to the Radeon HD 4830 1GB, by far. (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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.