Radeon HD 7950 3GB vs Radeon R5 M330

Intro

Compare all that to the Radeon R5 M330, which comes with GPU core speed of 1030 MHz, and 2048 MB of DDR3 RAM running at 900 MHz through a 64-bit bus. It also is comprised of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7950 3GB should theoretically be much better than the Radeon R5 M330 overall. (explain)

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

Texel Rate

The Radeon HD 7950 3GB is quite a bit (approximately 335%) more effective at anisotropic 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 screen resolution is important to you, then the Radeon HD 7950 3GB is superior to the Radeon R5 M330, by a large margin. (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 MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.