Radeon HD 5450 vs Radeon R9 380 2G

Intro

Compare all that to the Radeon R9 380 2G, which comes with core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon R9 380 2G		190 Watts
	Difference: 171 Watts (900%)

Memory Bandwidth

The Radeon R9 380 2G should theoretically perform much faster than the Radeon HD 5450 in general. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 169600 (1325%)

Texel Rate

The Radeon R9 380 2G is quite a bit (about 1989%) faster with regards to anisotropic filtering than the Radeon HD 5450. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 103440 (1989%)

Pixel Rate

The Radeon R9 380 2G is quite a bit (approximately 1094%) more effective at AA than the Radeon HD 5450, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 28440 (1094%)

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 (counted in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.