Radeon HD 5750 1GB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which uses a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this model. 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 280X		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280X should in theory be quite a bit better than 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 is quite a bit (approximately 332%) better at anisotropic 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 is much (approximately 143%) faster with regards to FSAA than the Radeon HD 5750 1GB, and able to handle higher resolutions without slowing down too much. (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 max amount of information (counted in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.