Radeon HD 7990 vs Radeon R5 M230

Intro

Compare all that to the Radeon R5 M230, which uses a 28 nm design. AMD has set the core frequency at 780 MHz. The DDR3 memory works at a speed of 1000 MHz on this specific model. It features 320 SPUs as well as 20 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7990		15520 points
Radeon R5 M230		1281 points
	Difference: 14239 (1112%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 is 3500% faster than the Radeon R5 M230 overall, due to its greater bandwidth. (explain)

Radeon HD 7990		576000 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 560000 (3500%)

Texel Rate

The Radeon HD 7990 will be a lot (more or less 1459%) better at AF than the Radeon R5 M230. (explain)

Radeon HD 7990		243200 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 227600 (1459%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7990 is superior to the Radeon R5 M230, by far. (explain)

Radeon HD 7990		60800 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 57680 (1849%)

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 transported over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.