Radeon HD 5750 512MB vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which features GPU clock speed of 850 MHz, and 1024 MB of GDDR5 RAM running at 1200 MHz through a 128-bit bus. It also is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon HD 5770		108 Watts
	Difference: 22 Watts (26%)

Memory Bandwidth

The Radeon HD 5770 should in theory be a little bit faster than the Radeon HD 5750 512MB overall. (explain)

Radeon HD 5770		76800 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 3200 (4%)

Texel Rate

The Radeon HD 5770 is quite a bit (about 35%) better at anisotropic filtering than the Radeon HD 5750 512MB. (explain)

Radeon HD 5770		34000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 8800 (35%)

Pixel Rate

The Radeon HD 5770 is a lot (more or less 21%) faster with regards to full screen anti-aliasing than the Radeon HD 5750 512MB, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 5770		13600 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 2400 (21%)

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 (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out 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 video 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 number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.