GeForce GT 440 1.5GB vs GeForce GTX 850M

Intro

Compare all of that to the GeForce GTX 850M, which features a clock speed of 876 MHz and a DDR3 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 850M		3340 points
GeForce GT 440 1.5GB		840 points
	Difference: 2500 (298%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GT 440 1.5GB		56 Watts
	Difference: 16 Watts (40%)

Memory Bandwidth

The GeForce GT 440 1.5GB should theoretically perform quite a bit faster than the GeForce GTX 850M in general. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 11200 (35%)

Texel Rate

The GeForce GTX 850M will be quite a bit (about 146%) better at AF than the GeForce GT 440 1.5GB. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 20784 (146%)

Pixel Rate

The GeForce GT 440 1.5GB is a little bit (approximately 2%) more effective at AA than the GeForce GTX 850M, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 240 (2%)

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 (measured in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the 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 core speed of the card. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.