Radeon HD 5750 1GB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which comes with a clock frequency of 850 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 384-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 280X		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

Performance-wise, the Radeon R9 280X should in theory be a lot superior to the Radeon HD 5750 1GB in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 214400 (291%)

Texel Rate

The Radeon R9 280X will be a lot (more or less 332%) better at texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 83600 (332%)

Pixel Rate

The Radeon R9 280X will be a lot (approximately 143%) better at AA than the Radeon HD 5750 1GB, and able to handle higher screen resolutions more effectively. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 16000 (143%)

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 (measured in MB per second) that can be transferred 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 memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.