GeForce GTX 980M vs Radeon HD 5570

Intro

Compare all of that to the Radeon HD 5570, which features a GPU core clock speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 900 MHz through a 128-bit bus. It also features 400(80x5) Stream Processors, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 980M		100 Watts
	Difference: 57 Watts (133%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980M will be 344% faster than the Radeon HD 5570 overall, due to its higher data rate. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 99200 (344%)

Texel Rate

The GeForce GTX 980M is quite a bit (about 667%) more effective at anisotropic filtering than the Radeon HD 5570. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 86648 (667%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 61232 (1178%)

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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.