Radeon HD 7990 vs Radeon R5 M330

Intro

Compare all of that to the Radeon R5 M330, which has a clock frequency of 1030 MHz and a DDR3 memory speed of 900 MHz. It also uses a 64-bit bus, and makes use of a 28 nm design. It features 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7990 should in theory be quite a bit superior to the Radeon R5 M330 in general. (explain)

Radeon HD 7990		576000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 561600 (3900%)

Texel Rate

The Radeon HD 7990 will be much (about 1081%) better at anisotropic filtering than the Radeon R5 M330. (explain)

Radeon HD 7990		243200 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 222600 (1081%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7990 is superior to the Radeon R5 M330, by far. (explain)

Radeon HD 7990		60800 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 52560 (638%)

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 maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.