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GeForce 825M vs GeForce 8500 GT

Intro

The GeForce 825M has a clock speed of 850 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare those specs to the GeForce 8500 GT, which has clock speeds of 450 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 RAM. It features 16 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M 33 Watts
GeForce 8500 GT 45 Watts
Difference: 12 Watts (36%)

Memory Bandwidth

As far as performance goes, the GeForce 825M should theoretically be a bit superior to the GeForce 8500 GT in general. (explain)

GeForce 825M 14400 MB/sec
GeForce 8500 GT 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 825M will be a lot (about 278%) faster with regards to anisotropic filtering than the GeForce 8500 GT. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce 8500 GT 3600 Mtexels/sec
Difference: 10000 (278%)

Pixel Rate

The GeForce 825M will be quite a bit (about 278%) faster with regards to full screen anti-aliasing than the GeForce 8500 GT, and able to handle higher screen resolutions better. (explain)

GeForce 825M 6800 Mpixels/sec
GeForce 8500 GT 1800 Mpixels/sec
Difference: 5000 (278%)

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 8500 GT

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 8500 GT
Manufacturer nVidia nVidia
Year January 27 2014 April 2007
Code Name GK208 G86
Memory 2048 MB 512 MB
Core Speed 850 MHz 450 MHz
Memory Speed 1800 MHz 800 MHz
Power (Max TDP) 33 watts 45 watts
Bandwidth 14400 MB/sec 12800 MB/sec
Texel Rate 13600 Mtexels/sec 3600 Mtexels/sec
Pixel Rate 6800 Mpixels/sec 1800 Mpixels/sec
Unified Shaders 384 16
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR3 DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 80 nm
Transistors (Unknown) million 210 million
Bus PCIe 3.0 x8 PCIe x16, PCI, 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 megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 maximum fill rate.

Display Prices

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GeForce 825M

Amazon.com

Check prices at:

GeForce 8500 GT

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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