Radeon HD 4550 512MB vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which makes use of a 28 nm design. AMD has set the core frequency at 730 MHz. The DDR3 RAM works at a frequency of 900 MHz on this specific model. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
Radeon R7 240		30 Watts
	Difference: 5 Watts (20%)

Memory Bandwidth

In theory, the Radeon R7 240 will be 125% faster than the Radeon HD 4550 512MB in general, because of its greater bandwidth. (explain)

Radeon R7 240		28800 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The Radeon R7 240 will be quite a bit (more or less 204%) more effective at AF than the Radeon HD 4550 512MB. (explain)

Radeon R7 240		14600 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 9800 (204%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 240 is superior to the Radeon HD 4550 512MB, and very much so. (explain)

Radeon R7 240		5840 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 3440 (143%)

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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.