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

Intro

Compare those specifications to the Radeon R9 Nano, which has 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 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

As far as performance goes, the Radeon R9 Nano should in theory be much superior to the Radeon HD 6450 (OEM) 1GB in general. (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 a lot (more or less 4167%) better at texture 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

The Radeon R9 Nano will be quite a bit (approximately 2033%) faster with regards to AA than the Radeon HD 6450 (OEM) 1GB, and also should be capable of handling higher resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the 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 card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.