Radeon HD 3650 vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which features core clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon R9 270X		180 Watts
	Difference: 102 Watts (131%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270X should theoretically be quite a bit superior to the Radeon HD 3650 in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 153600 (600%)

Texel Rate

The Radeon R9 270X should be much (approximately 1279%) more effective at texture filtering than the Radeon HD 3650. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 74200 (1279%)

Pixel Rate

The Radeon R9 270X is much (more or less 1003%) better at FSAA than the Radeon HD 3650, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 29100 (1003%)

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 (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 interface width by its memory clock speed. In the case of DDR memory, the result 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 bandwidth is, the lower the potential to get to the max fill rate.