Radeon HD 3650 vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which comes with a core clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 3650		78 Watts
	Difference: 48 Watts (160%)

Memory Bandwidth

In theory, the Radeon R7 240 is 13% faster than the Radeon HD 3650 overall, because of its higher bandwidth. (explain)

Radeon R7 240		28800 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 3200 (13%)

Texel Rate

The Radeon R7 240 should be quite a bit (approximately 152%) better at anisotropic filtering than the Radeon HD 3650. (explain)

Radeon R7 240		14600 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 8800 (152%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R7 240 is superior to the Radeon HD 3650, and very much so. (explain)

Radeon R7 240		5840 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 2940 (101%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core 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 processed per 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. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.