Radeon HD 5750 512MB vs Radeon HD 6450 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6450 (OEM) 1GB, which comes with a core clock frequency of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It features 160 SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 55 Watts (177%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5750 512MB should perform quite a bit faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 44800 (156%)

Texel Rate

The Radeon HD 5750 512MB is quite a bit (about 320%) faster with regards to AF than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 19200 (320%)

Pixel Rate

The Radeon HD 5750 512MB will be much (more or less 273%) faster with regards to FSAA than the Radeon HD 6450 (OEM) 1GB, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 8200 (273%)

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 data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card 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 number 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.