Radeon HD 5750 1GB vs Radeon R9 380X

Intro

Compare all that to the Radeon R9 380X, which comes with core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 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 5750 1GB		86 Watts
Radeon R9 380X		190 Watts
	Difference: 104 Watts (121%)

Memory Bandwidth

In theory, the Radeon R9 380X should be 148% faster than the Radeon HD 5750 1GB in general, because of its higher bandwidth. (explain)

Radeon R9 380X		182400 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 108800 (148%)

Texel Rate

The Radeon R9 380X will be a lot (more or less 393%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 98960 (393%)

Pixel Rate

The Radeon R9 380X should be a lot (approximately 177%) better at FSAA than the Radeon HD 5750 1GB, and will be able to handle higher resolutions better. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 19840 (177%)

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 maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core 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 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.