Radeon HD 4550 512MB vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which features core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
Radeon R9 M295X		125 Watts
	Difference: 100 Watts (400%)

Memory Bandwidth

The Radeon R9 M295X, in theory, should perform a lot faster than the Radeon HD 4550 512MB in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 163200 (1275%)

Texel Rate

The Radeon R9 M295X should be a lot (approximately 1900%) more effective at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 91200 (1900%)

Pixel Rate

The Radeon R9 M295X should be quite a bit (about 900%) better at FSAA than the Radeon HD 4550 512MB, and also capable of handling higher screen resolutions better. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 21600 (900%)

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 (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 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 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 is worked out by multiplying the total number 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 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 ability to reach the maximum fill rate.