GeForce GTX 260 216SP 55 nm vs Radeon R9 Nano

Intro

Compare all that to the Radeon R9 Nano, which features a clock speed of 1000 MHz and a HBM memory speed of 500 MHz. It also makes use of a 4096-bit memory bus, and makes use of a 28 nm design. It features 4096 SPUs, 256 TAUs, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 216SP 55 nm		171 Watts
Radeon R9 Nano		175 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

The Radeon R9 Nano should theoretically perform much faster than the GeForce GTX 260 216SP 55 nm in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 400112 (358%)

Texel Rate

The Radeon R9 Nano is a lot (more or less 517%) better at texture filtering than the GeForce GTX 260 216SP 55 nm. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 214528 (517%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 Nano is superior to the GeForce GTX 260 216SP 55 nm, and very much so. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 260 216SP 55 nm		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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.