Radeon R7 250X vs Radeon R9 Nano

Intro

Compare that to the Radeon R9 Nano, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The HBM RAM works at a speed of 500 MHz on this model. It features 4096 SPUs as well as 256 Texture Address Units and 64 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

Radeon R9 Nano		14918 points
Radeon R7 250X		2860 points
	Difference: 12058 (422%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon R9 Nano		175 Watts
	Difference: 80 Watts (84%)

Memory Bandwidth

In theory, the Radeon R9 Nano should be 611% faster than the Radeon R7 250X overall, due to its higher data rate. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 440000 (611%)

Texel Rate

The Radeon R9 Nano is a lot (more or less 540%) more effective at texture filtering than the Radeon R7 250X. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 216000 (540%)

Pixel Rate

The Radeon R9 Nano should be a lot (more or less 300%) faster with regards to FSAA than the Radeon R7 250X, and also will be able to handle higher resolutions more effectively. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 48000 (300%)

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 largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses 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 number of texture map elements (texels) that can be processed in one second. This number is calculated 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 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 that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.