GeForce GTX 850M vs Radeon HD 3650

Intro

Compare that to the Radeon HD 3650, which has a core clock speed of 725 MHz and a GDDR4 memory frequency of 800 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It features 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

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

In theory, the GeForce GTX 850M is 25% faster than the Radeon HD 3650 in general, because of its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 850M will be much (about 504%) better 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

If running with lots of anti-aliasing is important to you, then the GeForce GTX 850M is a better choice, and very much so. (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 maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video 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 number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.