Radeon HD 4830 512MB vs Radeon R5 M230

Intro

Compare those specifications to the Radeon R5 M230, which has core clock speeds of 780 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs as well as 20 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 4830 512MB should theoretically be quite a bit superior to the Radeon R5 M230 overall. (explain)

Radeon HD 4830 512MB		57600 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 41600 (260%)

Texel Rate

The Radeon HD 4830 512MB is just a bit (approximately 18%) faster with regards to anisotropic filtering than the Radeon R5 M230. (explain)

Radeon HD 4830 512MB		18400 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 2800 (18%)

Pixel Rate

The Radeon HD 4830 512MB will be quite a bit (about 195%) more effective at FSAA than the Radeon R5 M230, and able to handle higher screen resolutions better. (explain)

Radeon HD 4830 512MB		9200 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 6080 (195%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.