Radeon HD 6450 (OEM) vs Radeon R9 M375X

Intro

Compare those specs to the Radeon R9 M375X, which comes with core clock speeds of 1015 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M375X will be 463% faster than the Radeon HD 6450 (OEM) overall, due to its greater bandwidth. (explain)

Radeon R9 M375X		72000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 59200 (463%)

Texel Rate

The Radeon R9 M375X is much (about 712%) better at AF than the Radeon HD 6450 (OEM). (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 35600 (712%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M375X is a better choice, by far. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 13740 (550%)

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 MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.