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GeForce 825M vs GeForce 8500 GT

Intro

The GeForce 825M features a GPU core speed of 850 MHz, and the 2048 MB of DDR3 RAM runs at 900 MHz through a 64-bit bus. It also is made up of 384 Stream Processors, 16 TAUs, and 8 ROPs.

Compare all of that to the GeForce 8500 GT, which makes use of a 80 nm design. nVidia has clocked the core frequency at 450 MHz. The DDR2 memory is set to run at a speed of 400 MHz on this card. It features 16 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

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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

Theoretically speaking, the GeForce 825M should be 13% faster than the GeForce 8500 GT in general, due to its greater data rate. (explain)

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

Texel Rate

The GeForce 825M should be quite a bit (more or less 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 is much (more or less 278%) faster with regards to FSAA than the GeForce 8500 GT, and will be capable of handling higher resolutions without slowing down too much. (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 (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

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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