Radeon HD 5570 vs Radeon HD 6750

Intro

Compare that to the Radeon HD 6750, which features GPU clock speed of 725 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 720 SPUs, 36 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 6750		86 Watts
	Difference: 43 Watts (100%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 should perform much faster than the Radeon HD 5570 overall. (explain)

Radeon HD 6750		64000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 35200 (122%)

Texel Rate

The Radeon HD 6750 should be a lot (about 101%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

Radeon HD 6750		26100 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 13100 (101%)

Pixel Rate

The Radeon HD 6750 should be quite a bit (about 123%) faster with regards to AA than the Radeon HD 5570, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6750		11600 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 6400 (123%)

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 transported across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher 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 most pixels that the graphics card 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 ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 max fill rate.