Radeon HD 6450 (OEM) 1GB vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features GPU core speed of 750 MHz, and 4096 MB of GDDR5 RAM running 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) 1GB		31 Watts
Radeon R9 M295X		125 Watts
	Difference: 94 Watts (303%)

Memory Bandwidth

Performance-wise, the Radeon R9 M295X should theoretically be a lot superior to the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 147200 (511%)

Texel Rate

The Radeon R9 M295X will be much (about 1500%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 90000 (1500%)

Pixel Rate

The Radeon R9 M295X should be quite a bit (approximately 700%) more effective at FSAA than the Radeon HD 6450 (OEM) 1GB, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 21000 (700%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the 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 bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high 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 of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.