Radeon HD 6450 (OEM) vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which comes with clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 M395X		125 Watts
	Difference: 94 Watts (303%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X should be 1150% faster than the Radeon HD 6450 (OEM) in general, due to its greater bandwidth. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 147200 (1150%)

Texel Rate

The Radeon R9 M395X is a lot (more or less 1751%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 87544 (1751%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M395X is a better choice, by a large margin. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 20636 (825%)

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 transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.