Radeon HD 5750 512MB vs Radeon HD 7850

Intro

Compare all of that to the Radeon HD 7850, which features core speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
Radeon HD 7850		130 Watts
	Difference: 44 Watts (51%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7850 should theoretically be quite a bit superior to the Radeon HD 5750 512MB in general. (explain)

Radeon HD 7850		153600 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 80000 (109%)

Texel Rate

The Radeon HD 7850 will be a lot (more or less 118%) faster with regards to AF than the Radeon HD 5750 512MB. (explain)

Radeon HD 7850		55040 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 29840 (118%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7850 is superior to the Radeon HD 5750 512MB, by a large margin. (explain)

Radeon HD 7850		27520 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 16320 (146%)

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 (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR 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 amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.