Radeon HD 5750 1GB vs Radeon HD 6670 (OEM)

Intro

Compare all that to the Radeon HD 6670 (OEM), which has GPU clock speed of 800 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is comprised of 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon HD 5750 1GB		86 Watts
	Difference: 23 Watts (37%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should theoretically be a bit better than the Radeon HD 6670 (OEM) overall. (explain)

Radeon HD 5750 1GB		73600 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 9600 (15%)

Texel Rate

The Radeon HD 5750 1GB will be quite a bit (approximately 31%) better at AF than the Radeon HD 6670 (OEM). (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 6000 (31%)

Pixel Rate

If using a high screen 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 6670 (OEM)		6400 Mpixels/sec
	Difference: 4800 (75%)

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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be processed per second. This figure 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.