Radeon HD 6990 vs Radeon R5 M330

Intro

Compare those specifications to the Radeon R5 M330, which uses a 28 nm design. AMD has clocked the core speed at 1030 MHz. The DDR3 memory is set to run at a speed of 900 MHz on this particular card. It features 320 SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 6990 will be 2122% quicker than the Radeon R5 M330 overall, due to its greater data rate. (explain)

Radeon HD 6990		320000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 305600 (2122%)

Texel Rate

The Radeon HD 6990 will be a lot (more or less 674%) faster with regards to anisotropic filtering than the Radeon R5 M330. (explain)

Radeon HD 6990		159360 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 138760 (674%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6990 is superior to the Radeon R5 M330, by far. (explain)

Radeon HD 6990		53120 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 44880 (545%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video 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 number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.