Radeon HD 6750 1GB vs Radeon R9 290

Intro

Compare those specs to the Radeon R9 290, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon R9 290		300 Watts
	Difference: 214 Watts (249%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290 should be 400% faster than the Radeon HD 6750 1GB overall, due to its higher data rate. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 256000 (400%)

Texel Rate

The Radeon R9 290 will be a lot (more or less 390%) more effective at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 101900 (390%)

Pixel Rate

The Radeon R9 290 will be a lot (more or less 341%) more effective at AA than the Radeon HD 6750 1GB, and should be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 39600 (341%)

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 max amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.