Radeon HD 6450 (OEM) 1GB vs Radeon R9 Nano

Intro

Compare those specifications to the Radeon R9 Nano, which features core speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs as well as 256 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
Radeon R9 Nano		175 Watts
	Difference: 144 Watts (465%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 Nano is 1678% faster than the Radeon HD 6450 (OEM) 1GB in general, because of its higher bandwidth. (explain)

Radeon R9 Nano		512000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 483200 (1678%)

Texel Rate

The Radeon R9 Nano should be quite a bit (approximately 4167%) better at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 Nano		256000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 250000 (4167%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 Nano is a better choice, by far. (explain)

Radeon R9 Nano		64000 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 61000 (2033%)

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 data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to get to the maximum fill rate.