Radeon R9 M290X vs Radeon R9 Nano

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
Radeon R9 Nano		175 Watts
	Difference: 75 Watts (75%)

Memory Bandwidth

The Radeon R9 Nano, in theory, should be much faster than the Radeon R9 M290X in general. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R9 M290X		153600 MB/sec
	Difference: 358400 (233%)

Texel Rate

The Radeon R9 Nano will be quite a bit (more or less 276%) more effective at texture filtering than the Radeon R9 M290X. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R9 M290X		68000 Mtexels/sec
	Difference: 188000 (276%)

Pixel Rate

The Radeon R9 Nano is quite a bit (more or less 135%) more effective at full screen anti-aliasing than the Radeon R9 M290X, and should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon R9 M290X		27200 Mpixels/sec
	Difference: 36800 (135%)

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 (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 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 maximum fill rate.