Radeon HD 4730 vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which makes use of a 28 nm design. AMD has clocked the core speed at 970 MHz. The GDDR5 RAM runs at a speed of 1425 MHz on this model. It features 1792 SPUs along with 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 2G		190 Watts
	Difference: 50 Watts (36%)

Memory Bandwidth

Performance-wise, the Radeon R9 380 2G should theoretically be quite a bit better than the Radeon HD 4730 overall. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 124800 (217%)

Texel Rate

The Radeon R9 380 2G is quite a bit (approximately 385%) faster with regards to anisotropic filtering than the Radeon HD 4730. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 86240 (385%)

Pixel Rate

The Radeon R9 380 2G should be quite a bit (about 454%) better at anti-aliasing than the Radeon HD 4730, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 380 2G		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 information (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core 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 rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.