Radeon HD 6750 1GB vs Radeon HD 7850

Intro

Compare those specifications to the Radeon HD 7850, which features a core clock speed of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon HD 7850		130 Watts
	Difference: 44 Watts (51%)

Memory Bandwidth

The Radeon HD 7850, in theory, should be a lot faster than the Radeon HD 6750 1GB in general. (explain)

Radeon HD 7850		153600 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 7850 should be much (more or less 111%) faster with regards to texture filtering than the Radeon HD 6750 1GB. (explain)

Radeon HD 7850		55040 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 28940 (111%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7850 is superior to the Radeon HD 6750 1GB, by a large margin. (explain)

Radeon HD 7850		27520 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 15920 (137%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.