Radeon HD 6450 (OEM) vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which comes with a core clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation 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

As far as performance goes, the Radeon R9 M395X should in theory be a lot better than the Radeon HD 6450 (OEM) in general. (explain)

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

Texel Rate

The Radeon R9 M395X is quite a bit (approximately 1751%) faster with regards to AF 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 running with a high resolution is important to you, then the Radeon R9 M395X is superior to the Radeon HD 6450 (OEM), and very much so. (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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.