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GeForce 820M vs GeForce GT 440 1.5GB

Intro

The GeForce 820M features a GPU core speed of 719 MHz, and the 2048 MB of DDR3 memory runs at 1000 MHz through a 64-bit bus. It also is made up of 96 Stream Processors, 16 Texture Address Units, and 4 Raster Operation Units.

Compare all that to the GeForce GT 440 1.5GB, which comes with GPU core speed of 594 MHz, and 1536 MB of GDDR3 memory set to run at 900 MHz through a 192-bit bus. It also is comprised of 144 Stream Processors, 24 TAUs, and 24 ROPs.

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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 820M 850 points
GeForce GT 440 1.5GB 840 points
Difference: 10 (1%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
GeForce GT 440 1.5GB 56 Watts
Difference: 41 Watts (273%)

Memory Bandwidth

The GeForce GT 440 1.5GB, in theory, should be a lot faster than the GeForce 820M overall. (explain)

GeForce GT 440 1.5GB 43200 MB/sec
GeForce 820M 16000 MB/sec
Difference: 27200 (170%)

Texel Rate

The GeForce GT 440 1.5GB is quite a bit (more or less 24%) faster with regards to texture filtering than the GeForce 820M. (explain)

GeForce GT 440 1.5GB 14256 Mtexels/sec
GeForce 820M 11504 Mtexels/sec
Difference: 2752 (24%)

Pixel Rate

The GeForce GT 440 1.5GB should be quite a bit (approximately 396%) faster with regards to anti-aliasing than the GeForce 820M, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 11380 (396%)

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

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GeForce 820M

Amazon.com

Check prices at:

GeForce GT 440 1.5GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 820M GeForce GT 440 1.5GB
Manufacturer nVidia nVidia
Year February 2014 October 2010
Code Name GF117 GF106
Memory 2048 MB 1536 MB
Core Speed 719 MHz 594 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 15 watts 56 watts
Bandwidth 16000 MB/sec 43200 MB/sec
Texel Rate 11504 Mtexels/sec 14256 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 14256 Mpixels/sec
Unified Shaders 96 144
Texture Mapping Units 16 24
Render Output Units 4 24
Bus Type DDR3 GDDR3
Bus Width 64-bit 192-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1170 million
Bus PCIe 2.0 x16 PCIe x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 820M

Amazon.com

Check prices at:

GeForce GT 440 1.5GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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