GeForce GTX 850M vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which makes use of a 55 nm design. AMD has clocked the core speed at 725 MHz. The GDDR4 RAM is set to run at a speed of 800 MHz on this particular card. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 3650		78 Watts
	Difference: 38 Watts (95%)

Memory Bandwidth

The GeForce GTX 850M should in theory perform a lot faster than the Radeon HD 3650 overall. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M should be a lot (more or less 504%) more effective at texture filtering than the Radeon HD 3650. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 29240 (504%)

Pixel Rate

The GeForce GTX 850M is a lot (more or less 383%) more effective at anti-aliasing than the Radeon HD 3650, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 11116 (383%)

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 data (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of 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.