GeForce GTX 650 vs Radeon R9 Nano

Intro

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

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
GeForce GTX 650		2263 points
	Difference: 12655 (559%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon R9 Nano		175 Watts
	Difference: 111 Watts (173%)

Memory Bandwidth

The Radeon R9 Nano, in theory, should perform much faster than the GeForce GTX 650 in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 432000 (540%)

Texel Rate

The Radeon R9 Nano is a lot (more or less 656%) better at anisotropic filtering than the GeForce GTX 650. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 222144 (656%)

Pixel Rate

The Radeon R9 Nano is much (more or less 278%) better at full screen anti-aliasing than the GeForce GTX 650, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 47072 (278%)

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 moved over the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.