GeForce 830M vs Radeon HD 3650

Intro

Compare all of that to the Radeon HD 3650, which comes with a clock speed of 725 MHz and a GDDR4 memory frequency of 800 MHz. It also makes use of a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 3650		78 Watts
	Difference: 53 Watts (212%)

Memory Bandwidth

The Radeon HD 3650 should in theory perform quite a bit faster than the GeForce 830M in general. (explain)

Radeon HD 3650		25600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 11200 (78%)

Texel Rate

The GeForce 830M is quite a bit (more or less 184%) better at anisotropic filtering than the Radeon HD 3650. (explain)

GeForce 830M		16464 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 10664 (184%)

Pixel Rate

The GeForce 830M should be quite a bit (approximately 184%) better at anti-aliasing than the Radeon HD 3650, and should be able to handle higher screen resolutions better. (explain)

GeForce 830M		8232 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 5332 (184%)

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 max amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number 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 graphics 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 most pixels that the graphics chip can 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 colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.