Radeon HD 3650 512MB vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which has core speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M265X should theoretically perform much faster than the Radeon HD 3650 512MB overall. (explain)

Radeon R9 M265X		72000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 46400 (181%)

Texel Rate

The Radeon R9 M265X should be a lot (more or less 297%) faster with regards to anisotropic filtering than the Radeon HD 3650 512MB. (explain)

Radeon R9 M265X		23000 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 17200 (297%)

Pixel Rate

The Radeon R9 M265X should be quite a bit (approximately 217%) faster with regards to FSAA than the Radeon HD 3650 512MB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 M265X		9200 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 6300 (217%)

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 maximum amount of information (counted in MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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