Radeon HD 4730 vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which comes with GPU core speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1280 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730		140 Watts
Radeon R9 270X		180 Watts
	Difference: 40 Watts (29%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270X should theoretically be quite a bit superior to the Radeon HD 4730 in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 121600 (211%)

Texel Rate

The Radeon R9 270X will be much (about 257%) more effective at texture filtering than the Radeon HD 4730. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 57600 (257%)

Pixel Rate

The Radeon R9 270X is much (approximately 471%) better at anti-aliasing than the Radeon HD 4730, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 26400 (471%)

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 information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per 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 sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.