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 RAM. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

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

As far as performance goes, the Radeon R9 380 4G should in theory be quite a bit superior to the Radeon HD 4730 in general. (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 quite a bit (approximately 385%) better at AF 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 running with a high resolution is important to you, then the Radeon R9 380 4G is the winner, by a large margin. (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 (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.