Radeon R5 M330 vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which uses a 28 nm design. AMD has clocked the core speed at 918 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this particular model. 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

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 should perform a lot faster than the Radeon R5 M330 overall. (explain)

Radeon R9 285		176000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 161600 (1122%)

Texel Rate

The Radeon R9 285 is much (more or less 399%) faster with regards to AF than the Radeon R5 M330. (explain)

Radeon R9 285		102816 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 82216 (399%)

Pixel Rate

The Radeon R9 285 should be much (approximately 257%) better at AA than the Radeon R5 M330, and should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 285		29376 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 21136 (257%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.