Radeon HD 6450 (OEM) vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which features GPU clock speed of 750 MHz, and 4096 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also 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 M295X		125 Watts
	Difference: 94 Watts (303%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should be 1275% quicker than the Radeon HD 6450 (OEM) in general, due to its greater data rate. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 163200 (1275%)

Texel Rate

The Radeon R9 M295X should be quite a bit (more or less 1820%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 91000 (1820%)

Pixel Rate

The Radeon R9 M295X will be a lot (more or less 860%) more effective at AA than the Radeon HD 6450 (OEM), and capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 21500 (860%)

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 max amount of information (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.