Radeon HD 4730 vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon HD 4730		140 Watts
	Difference: 45 Watts (47%)

Memory Bandwidth

The Radeon R7 250X should theoretically perform a lot faster than the Radeon HD 4730 overall. (explain)

Radeon R7 250X		72000 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 14400 (25%)

Texel Rate

The Radeon R7 250X will be a lot (more or less 79%) faster with regards to anisotropic filtering than the Radeon HD 4730. (explain)

Radeon R7 250X		40000 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 17600 (79%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 250X is superior to the Radeon HD 4730, by a large margin. (explain)

Radeon R7 250X		16000 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 10400 (186%)

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 largest amount of information (counted in MB per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, 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 texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.