GeForce GT 450 (OEM) vs Radeon R9 Nano

Intro

Compare all that to the Radeon R9 Nano, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The HBM RAM is set to run at a frequency of 500 MHz on this particular model. It features 4096 SPUs as well as 256 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 Nano		175 Watts
	Difference: 69 Watts (65%)

Memory Bandwidth

The Radeon R9 Nano should theoretically perform much faster than the GeForce GT 450 (OEM) in general. (explain)

Radeon R9 Nano		512000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 416000 (433%)

Texel Rate

The Radeon R9 Nano is quite a bit (approximately 1250%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 Nano		256000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 237040 (1250%)

Pixel Rate

The Radeon R9 Nano should be quite a bit (more or less 238%) more effective at FSAA than the GeForce GT 450 (OEM), and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 Nano		64000 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 45040 (238%)

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 (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics 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 can possibly write to its 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 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 output 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 potential to get to the maximum fill rate.