Radeon HD 5750 1GB vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this card. It features 1440(288x5) SPUs as well as 72 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon HD 5850		151 Watts
	Difference: 65 Watts (76%)

Memory Bandwidth

In theory, the Radeon HD 5850 will be 74% faster than the Radeon HD 5750 1GB in general, because of its higher data rate. (explain)

Radeon HD 5850		128000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 54400 (74%)

Texel Rate

The Radeon HD 5850 is a lot (about 107%) more effective at AF than the Radeon HD 5750 1GB. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 27000 (107%)

Pixel Rate

The Radeon HD 5850 will be a lot (more or less 107%) faster with regards to FSAA than the Radeon HD 5750 1GB, and also able to handle higher resolutions while still performing well. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 12000 (107%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the video card could possibly record 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.