Radeon HD 7950 3GB vs Radeon R5 M330

Intro

Compare those specs to the Radeon R5 M330, which has a clock speed of 1030 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 64-bit memory bus, and uses a 28 nm design. It features 320 SPUs, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7950 3GB, in theory, should be much faster than the Radeon R5 M330 in general. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 225600 (1567%)

Texel Rate

The Radeon HD 7950 3GB will be quite a bit (more or less 335%) better at texture filtering than the Radeon R5 M330. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 69000 (335%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7950 3GB is a better choice, and very much so. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 17360 (211%)

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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.