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GeForce 825M vs GeForce GT 130

Intro

The GeForce 825M has a core clock speed of 850 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 64-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the GeForce GT 130, which uses a 55 nm design. nVidia has clocked the core speed at 500 MHz. The DDR2 memory runs at a frequency of 250 MHz on this specific card. 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

The GeForce 825M should theoretically be a little 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%) more effective 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

The GeForce GT 130 should be just a bit (about 18%) faster with regards to FSAA than the GeForce 825M, and also will be able to handle higher screen 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 largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on 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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