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GeForce 825M vs GeForce GT 130

Intro

The GeForce 825M comes with a core clock frequency of 850 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit memory bus, and uses a 28 nm design. It is comprised of 384 SPUs, 16 TAUs, and 8 ROPs.

Compare all that to the GeForce GT 130, which has a clock frequency of 500 MHz and a DDR2 memory speed of 250 MHz. It also uses a 192-bit bus, and uses a 55 nm design. It features 48 SPUs, 24 TAUs, and 16 Raster Operation 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 just a bit faster than the GeForce GT 130 in general. (explain)

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

Texel Rate

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

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

Pixel Rate

The GeForce GT 130 should be a small bit (about 18%) more effective at FSAA than the GeForce 825M, and should be capable of handling higher resolutions without slowing down too much. (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 information (measured in megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - 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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