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GeForce 825M vs GeForce 8500 GT

Intro

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

Compare all of that to the GeForce 8500 GT, which comes with a core clock frequency of 450 MHz and a DDR2 memory frequency of 400 MHz. It also features a 128-bit bus, and makes use of a 80 nm design. It features 16 SPUs, 8 Texture Address Units, and 4 ROPs.

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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

Performance-wise, the GeForce 825M should in theory be a small 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 quite a bit (about 278%) faster with regards to texture 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 is much (more or less 278%) faster with regards to FSAA than the GeForce 8500 GT, and capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential 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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