Radeon HD 5670 vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which has core speeds of 700 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 720(144x5) SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon HD 5750 1GB		86 Watts
	Difference: 25 Watts (41%)

Memory Bandwidth

The Radeon HD 5750 1GB should in theory perform a bit faster than the Radeon HD 5670 overall. (explain)

Radeon HD 5750 1GB		73600 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 9600 (15%)

Texel Rate

The Radeon HD 5750 1GB will be quite a bit (approximately 63%) better at texture filtering than the Radeon HD 5670. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 9700 (63%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5750 1GB is the winner, and very much so. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 5000 (81%)

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 information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.