Radeon HD 7750 vs Radeon RX 480 4GB

Intro

Compare all that to the Radeon RX 480 4GB, which has core clock speeds of 1120 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 2304 SPUs along with 144 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 95 Watts (173%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 480 4GB should perform much faster than the Radeon HD 7750 overall. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 157376 (219%)

Texel Rate

The Radeon RX 480 4GB will be a lot (approximately 530%) better at texture filtering than the Radeon HD 7750. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 135680 (530%)

Pixel Rate

The Radeon RX 480 4GB should be much (approximately 180%) better at full screen anti-aliasing than the Radeon HD 7750, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 23040 (180%)

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 information (counted in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.