GeForce GTX 850M vs Radeon HD 3650 256MB

Intro

Compare those specifications to the Radeon HD 3650 256MB, which uses a 55 nm design. AMD has clocked the core speed at 725 MHz. The DDR2 RAM runs at a frequency of 800 MHz on this specific card. It features 120(24x5) SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 38 Watts (95%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 850M should be much faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M should be much (about 504%) faster with regards to AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 29240 (504%)

Pixel Rate

The GeForce GTX 850M is quite a bit (approximately 383%) faster with regards to AA than the Radeon HD 3650 256MB, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 3650 256MB		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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.