Radeon HD 5750 1GB vs Radeon R9 290

Intro

Compare those specs to the Radeon R9 290, which features a GPU core clock speed of 800 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 512-bit bus. It also features 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 290		300 Watts
	Difference: 214 Watts (249%)

Memory Bandwidth

The Radeon R9 290 should theoretically perform quite a bit faster than the Radeon HD 5750 1GB overall. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 246400 (335%)

Texel Rate

The Radeon R9 290 will be quite a bit (about 408%) more effective at texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 102800 (408%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 290 is a better choice, by a large margin. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 40000 (357%)

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 maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.