Radeon HD 4850 512MB vs Radeon R7 M260

Intro

Compare those specifications to the Radeon R7 M260, which comes with core speeds of 715 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4850 512MB should theoretically be quite a bit faster than the Radeon R7 M260 overall. (explain)

Radeon HD 4850 512MB		63552 MB/sec
Radeon R7 M260		16000 MB/sec
	Difference: 47552 (297%)

Texel Rate

The Radeon HD 4850 512MB is much (about 46%) more effective at anisotropic filtering than the Radeon R7 M260. (explain)

Radeon HD 4850 512MB		25000 Mtexels/sec
Radeon R7 M260		17160 Mtexels/sec
	Difference: 7840 (46%)

Pixel Rate

The Radeon HD 4850 512MB is a lot (more or less 75%) faster with regards to full screen anti-aliasing than the Radeon R7 M260, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 4850 512MB		10000 Mpixels/sec
Radeon R7 M260		5720 Mpixels/sec
	Difference: 4280 (75%)

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 (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on many 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.