GeForce 830M vs Radeon R9 Nano

Intro

Compare those specifications to the Radeon R9 Nano, which comes with clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs along with 256 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon R9 Nano		175 Watts
	Difference: 150 Watts (600%)

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should in theory be a lot better than the GeForce 830M in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 497600 (3456%)

Texel Rate

The Radeon R9 Nano will be much (about 1455%) more effective at AF than the GeForce 830M. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 239536 (1455%)

Pixel Rate

The Radeon R9 Nano should be much (more or less 677%) more effective at anti-aliasing than the GeForce 830M, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 55768 (677%)

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 data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.