Radeon HD 4830 1GB vs Radeon RX 550

Intro

Compare all that to the Radeon RX 550, which features core speeds of 1100 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 4830 1GB		95 Watts
	Difference: 45 Watts (90%)

Memory Bandwidth

In theory, the Radeon RX 550 should be a lot faster than the Radeon HD 4830 1GB overall. (explain)

Radeon RX 550		114688 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 57088 (99%)

Texel Rate

The Radeon RX 550 should be quite a bit (about 91%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)

Radeon RX 550		35200 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 16800 (91%)

Pixel Rate

The Radeon RX 550 will be much (about 91%) better at FSAA than the Radeon HD 4830 1GB, and will be capable of handling higher screen resolutions better. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 8400 (91%)

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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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