Radeon HD 4550 512MB vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1100 MHz. The GDDR5 memory is set to run at a speed of 1625 MHz on this particular model. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
Radeon R7 260X		115 Watts
	Difference: 90 Watts (360%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 260X should perform quite a bit faster than the Radeon HD 4550 512MB overall. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 91200 (713%)

Texel Rate

The Radeon R7 260X should be much (approximately 1183%) faster with regards to anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 56800 (1183%)

Pixel Rate

The Radeon R7 260X is quite a bit (approximately 633%) faster with regards to AA than the Radeon HD 4550 512MB, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 15200 (633%)

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 maximum amount of data (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.