Radeon HD 4730 vs Radeon R9 380 4G

Intro

Compare those specs to the Radeon R9 380 4G, which comes with core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 1792 SPUs as well as 112 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 380 4G		190 Watts
	Difference: 50 Watts (36%)

Memory Bandwidth

The Radeon R9 380 4G should in theory perform a lot faster than the Radeon HD 4730 overall. (explain)

Radeon R9 380 4G		182400 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 124800 (217%)

Texel Rate

The Radeon R9 380 4G is much (more or less 385%) more effective at anisotropic filtering than the Radeon HD 4730. (explain)

Radeon R9 380 4G		108640 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 86240 (385%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380 4G is superior to the Radeon HD 4730, by far. (explain)

Radeon R9 380 4G		31040 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 25440 (454%)

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 data (in units of megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units 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 amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.