Radeon R5 M330 vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which has GPU core speed of 970 MHz, and 2048 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also features 1792 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 380 2G should in theory perform much faster than the Radeon R5 M330 overall. (explain)

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

Texel Rate

The Radeon R9 380 2G will be much (more or less 427%) better at texture 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

The Radeon R9 380 2G should be much (more or less 277%) better at AA than the Radeon R5 M330, and also will be capable of handling higher screen resolutions more effectively. (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 largest amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 are processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.