Radeon HD 4830 1GB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which features GPU clock speed of 715 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 64-bit bus. It also features 384 Stream Processors, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4830 1GB should in theory be quite a bit superior to the Radeon R7 M260 in general. (explain)

Radeon HD 4830 1GB		57600 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 41600 (260%)

Texel Rate

The Radeon HD 4830 1GB is a bit (about 7%) better at anisotropic filtering than the Radeon R7 M260. (explain)

Radeon HD 4830 1GB		18400 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 1240 (7%)

Pixel Rate

The Radeon HD 4830 1GB will be much (about 61%) better at FSAA than the Radeon R7 M260, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 4830 1GB		9200 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 3480 (61%)

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 maximum amount of data (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.