Radeon R9 390 8G vs Radeon R9 Nano

Intro

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

Display Graphs

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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

Radeon R9 Nano		14918 points
Radeon R9 390 8G		12733 points
	Difference: 2185 (17%)

Zcash Mining Hash Rate

Radeon R9 Nano		402 Sol/s
Radeon R9 390 8G		326 Sol/s
	Difference: 76 (23%)

Ethereum Mining Hash Rate

Radeon R9 Nano		30 Mh/s
Radeon R9 390 8G		28 Mh/s
	Difference: 2 (7%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
Radeon R9 390 8G		275 Watts
	Difference: 100 Watts (57%)

Memory Bandwidth

Theoretically, the Radeon R9 Nano should perform quite a bit faster than the Radeon R9 390 8G in general. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R9 390 8G		384000 MB/sec
	Difference: 128000 (33%)

Texel Rate

The Radeon R9 Nano will be a lot (about 60%) better at AF than the Radeon R9 390 8G. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 96000 (60%)

Pixel Rate

Both cards have the exact same pixel fill rate, so in theory they should perform equally good at at anti-aliasing, and be capable of handling the same resolutions. (explain)

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 data (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.