Radeon R5 M330 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which has a clock frequency of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should be 1167% quicker than the Radeon R5 M330 overall, because of its greater data rate. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 168000 (1167%)

Texel Rate

The Radeon R9 380 2G is quite a bit (more or less 427%) better at anisotropic filtering than the Radeon R5 M330. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 88040 (427%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 380 2G is the winner, by a large margin. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 22800 (277%)

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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.