GeForce GTX 260 vs Radeon R9 Nano

Intro

Compare those specs to the Radeon R9 Nano, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The HBM memory is set to run at a frequency of 500 MHz on this card. It features 4096 SPUs along with 256 Texture Address Units and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Nano		175 Watts
GeForce GTX 260		182 Watts
	Difference: 7 Watts (4%)

Memory Bandwidth

The Radeon R9 Nano, in theory, should be much faster than the GeForce GTX 260 in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 260		111888 MB/sec
	Difference: 400112 (358%)

Texel Rate

The Radeon R9 Nano is quite a bit (more or less 594%) more effective at anisotropic filtering than the GeForce GTX 260. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 219136 (594%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 Nano is the winner, and very much so. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 47872 (297%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.