Radeon R7 250X 2GB vs Radeon R9 Nano

Intro

Compare all of 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 memory is set to run at a frequency of 500 MHz on this specific model. It features 4096 SPUs as well as 256 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon R9 Nano		175 Watts
	Difference: 80 Watts (84%)

Memory Bandwidth

In theory, the Radeon R9 Nano should be quite a bit faster than the Radeon R7 250X 2GB overall. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 440000 (611%)

Texel Rate

The Radeon R9 Nano will be quite a bit (approximately 540%) more effective at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 216000 (540%)

Pixel Rate

The Radeon R9 Nano should be quite a bit (approximately 300%) more effective at AA than the Radeon R7 250X 2GB, and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon R7 250X 2GB		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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are applied in one second. This is calculated by multiplying the total amount of texture units 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.