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GeForce 825M vs GeForce GT 130

Intro

The GeForce 825M comes with a GPU core clock speed of 850 MHz, and the 2048 MB of DDR3 memory is set to run at 900 MHz through a 64-bit bus. It also is comprised of 384 Stream Processors, 16 TAUs, and 8 Raster Operation Units.

Compare all that to the GeForce GT 130, which uses a 55 nm design. nVidia has set the core frequency at 500 MHz. The DDR2 memory is set to run at a speed of 250 MHz on this specific model. It features 48 SPUs as well as 24 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M 33 Watts
GeForce GT 130 75 Watts
Difference: 42 Watts (127%)

Memory Bandwidth

The GeForce 825M, in theory, should be a little bit faster than the GeForce GT 130 overall. (explain)

GeForce 825M 14400 MB/sec
GeForce GT 130 12000 MB/sec
Difference: 2400 (20%)

Texel Rate

The GeForce 825M should be a bit (more or less 13%) better at texture filtering than the GeForce GT 130. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce GT 130 12000 Mtexels/sec
Difference: 1600 (13%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 130 is a better choice, but not by far. (explain)

GeForce GT 130 8000 Mpixels/sec
GeForce 825M 6800 Mpixels/sec
Difference: 1200 (18%)

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 825M

Amazon.com

Check prices at:

GeForce GT 130

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 825M GeForce GT 130
Manufacturer nVidia nVidia
Year January 27 2014 March 10, 2009
Code Name GK208 G94b
Memory 2048 MB 768 MB
Core Speed 850 MHz 500 MHz
Memory Speed 1800 MHz 500 MHz
Power (Max TDP) 33 watts 75 watts
Bandwidth 14400 MB/sec 12000 MB/sec
Texel Rate 13600 Mtexels/sec 12000 Mtexels/sec
Pixel Rate 6800 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 384 48
Texture Mapping Units 16 24
Render Output Units 8 16
Bus Type DDR3 DDR2
Bus Width 64-bit 192-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 505 million
Bus PCIe 3.0 x8 PCIe x16 2.0
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount 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 speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card 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 number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 825M

Amazon.com

Check prices at:

GeForce GT 130

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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