Radeon HD 5750 1GB vs Radeon R9 270

Intro

Compare all of that to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM works at a frequency of 1400 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
Radeon R9 270		150 Watts
	Difference: 64 Watts (74%)

Memory Bandwidth

Theoretically, the Radeon R9 270 should perform quite a bit faster than the Radeon HD 5750 1GB in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 105600 (143%)

Texel Rate

The Radeon R9 270 will be quite a bit (about 186%) faster with regards to texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 46800 (186%)

Pixel Rate

The Radeon R9 270 should be a lot (more or less 157%) faster with regards to anti-aliasing than the Radeon HD 5750 1GB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 17600 (157%)

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 (counted in MB 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 clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video 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 card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.