Radeon HD 4730 vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which has clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

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

The Radeon R9 270X should theoretically perform much faster than 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 (more or less 257%) faster with regards to AF 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 will be much (approximately 471%) better at FSAA than the Radeon HD 4730, and also able to handle higher resolutions better. (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: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.