GeForce GTX 980M vs Radeon R9 285

Intro

Compare those specifications to the Radeon R9 285, which makes use of a 28 nm design. AMD has set the core speed at 918 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this model. It features 1792 SPUs as well as 112 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

GeForce GTX 980M		9476 points
Radeon R9 285		8500 points
	Difference: 976 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
Radeon R9 285		190 Watts
	Difference: 90 Watts (90%)

Memory Bandwidth

Theoretically, the Radeon R9 285 should perform much faster than the GeForce GTX 980M overall. (explain)

Radeon R9 285		176000 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 48000 (38%)

Texel Rate

The Radeon R9 285 is a little bit (about 3%) more effective at AF than the GeForce GTX 980M. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 3168 (3%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 980M is the winner, and very much so. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 37056 (126%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.