Radeon HD 4550 512MB vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 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 M395X		125 Watts
	Difference: 100 Watts (400%)

Memory Bandwidth

The Radeon R9 M395X should in theory be much faster than the Radeon HD 4550 512MB in general. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 147200 (1150%)

Texel Rate

The Radeon R9 M395X will be a lot (more or less 1828%) faster with regards to anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 87744 (1828%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M395X is superior to the Radeon HD 4550 512MB, by far. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 20736 (864%)

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 data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few 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.