Radeon HD 4550 256MB vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which features clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB		25 Watts
Radeon R9 M395X		125 Watts
	Difference: 100 Watts (400%)

Memory Bandwidth

The Radeon R9 M395X, in theory, should perform a lot faster than the Radeon HD 4550 256MB in general. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 4550 256MB		12800 MB/sec
	Difference: 147200 (1150%)

Texel Rate

The Radeon R9 M395X is a lot (about 1828%) faster with regards to AF than the Radeon HD 4550 256MB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 4550 256MB		4800 Mtexels/sec
	Difference: 87744 (1828%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M395X is the winner, by far. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 4550 256MB		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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 applied per 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 this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.