Radeon HD 3650 vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which makes use of a 28 nm design. AMD has clocked the core speed at 730 MHz. The DDR3 RAM runs at a speed of 900 MHz on this specific card. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator 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 will be 13% quicker than the Radeon HD 3650 overall, due to its greater data rate. (explain)

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

Texel Rate

The Radeon R7 240 is quite a bit (approximately 152%) more effective at AF than the Radeon HD 3650. (explain)

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

Pixel Rate

The Radeon R7 240 should be much (more or less 101%) faster with regards to anti-aliasing than the Radeon HD 3650, and also able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, 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 is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.