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GeForce 825M vs GeForce GT 130

Intro

The GeForce 825M makes use of a 28 nm design. nVidia has clocked the core speed at 850 MHz. The DDR3 memory is set to run at a speed of 900 MHz on this model. It features 384 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Compare those specifications to the GeForce GT 130, which makes use of a 55 nm design. nVidia has set the core speed at 500 MHz. The DDR2 memory is set to run at a speed of 250 MHz on this particular model. It features 48 SPUs as well as 24 Texture Address Units and 16 ROPs.

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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

Theoretically speaking, the GeForce 825M should perform a small 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 bit (approximately 13%) better at AF 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 bit (about 18%) faster with regards to anti-aliasing than the GeForce 825M, and also will be able to handle higher resolutions better. (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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units 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 in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum 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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