Radeon HD 4830 1GB vs Radeon HD 6570 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6570 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 650 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific card. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB		50 Watts
Radeon HD 4830 1GB		95 Watts
	Difference: 45 Watts (90%)

Memory Bandwidth

The Radeon HD 4830 1GB should in theory perform much faster than the Radeon HD 6570 (OEM) 1GB overall. (explain)

Radeon HD 4830 1GB		57600 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 28800 (100%)

Texel Rate

The Radeon HD 4830 1GB will be just a bit (approximately 18%) more effective at texture filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 4830 1GB		18400 Mtexels/sec
Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
	Difference: 2800 (18%)

Pixel Rate

The Radeon HD 4830 1GB is a lot (about 77%) faster with regards to AA than the Radeon HD 6570 (OEM) 1GB, and able to handle higher resolutions more effectively. (explain)

Radeon HD 4830 1GB		9200 Mpixels/sec
Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
	Difference: 4000 (77%)

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 (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are 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 this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.