GeForce GTX 275 vs Radeon R9 Nano

Intro

Compare those specs to the Radeon R9 Nano, which features core speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM memory. It features 4096 SPUs as well as 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 275		219 Watts
	Difference: 44 Watts (25%)

Memory Bandwidth

Performance-wise, the Radeon R9 Nano should theoretically be a lot better than the GeForce GTX 275 overall. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 384992 (303%)

Texel Rate

The Radeon R9 Nano will be much (approximately 406%) more effective at anisotropic filtering than the GeForce GTX 275. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 205360 (406%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 Nano is superior to the GeForce GTX 275, by far. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 46276 (261%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.