GeForce GT 220 GDDR3 vs Radeon R9 Nano

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon R9 Nano		175 Watts
	Difference: 117 Watts (202%)

Memory Bandwidth

As far as performance goes, the Radeon R9 Nano should theoretically be a lot better than the GeForce GT 220 GDDR3 in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 479616 (1481%)

Texel Rate

The Radeon R9 Nano is a lot (more or less 2460%) more effective at anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 246000 (2460%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 Nano is the winner, by a large margin. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 59000 (1180%)

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 information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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