Radeon HD 5970 vs Radeon R9 M380

Intro

Compare all that to the Radeon R9 M380, which comes with GPU clock speed of 1000 MHz, and 4096 MB of GDDR5 memory running at 1500 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5970 should be 167% quicker than the Radeon R9 M380 in general, due to its greater data rate. (explain)

Radeon HD 5970		256000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 160000 (167%)

Texel Rate

The Radeon HD 5970 should be a lot (about 480%) better at anisotropic filtering than the Radeon R9 M380. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 192000 (480%)

Pixel Rate

The Radeon HD 5970 should be quite a bit (approximately 480%) better at FSAA than the Radeon R9 M380, and able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 76800 (480%)

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 information (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.