Radeon HD 4670 1GB vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this specific model. It features 1120(224x5) SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
Radeon HD 5830		175 Watts
	Difference: 105 Watts (150%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be a lot better than the Radeon HD 4670 1GB in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 92800 (264%)

Texel Rate

The Radeon HD 5830 should be much (approximately 87%) better at texture filtering than the Radeon HD 4670 1GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 20800 (87%)

Pixel Rate

The Radeon HD 5830 will be a lot (about 113%) faster with regards to anti-aliasing than the Radeon HD 4670 1GB, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 6800 (113%)

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 (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics 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 maximum amount 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 amount of Raster Operations Pipelines by the the core 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.