Radeon HD 4850 512MB vs Radeon R5 M230

Intro

Compare that to the Radeon R5 M230, which uses a 28 nm design. AMD has set the core speed at 780 MHz. The DDR3 memory is set to run at a speed of 1000 MHz on this particular card. It features 320 SPUs as well as 20 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4850 512MB should in theory be quite a bit superior to the Radeon R5 M230 overall. (explain)

Radeon HD 4850 512MB		63552 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 47552 (297%)

Texel Rate

The Radeon HD 4850 512MB should be a lot (approximately 60%) more effective at anisotropic filtering than the Radeon R5 M230. (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 9400 (60%)

Pixel Rate

The Radeon HD 4850 512MB is much (approximately 221%) better at FSAA than the Radeon R5 M230, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 4850 512MB		10000 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 6880 (221%)

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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.