Radeon HD 3650 512MB vs Radeon R9 M295X

Intro

Compare all of that to the Radeon R9 M295X, which comes with GPU core speed of 750 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also is made up of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
Radeon R9 M295X		125 Watts
	Difference: 47 Watts (60%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M295X should be a lot faster than the Radeon HD 3650 512MB in general. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 150400 (588%)

Texel Rate

The Radeon R9 M295X is much (approximately 1555%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 90200 (1555%)

Pixel Rate

The Radeon R9 M295X should be much (about 728%) more effective at anti-aliasing than the Radeon HD 3650 512MB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 21100 (728%)

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 data (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.