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GeForce 825M vs GeForce 8600 GT 256MB DDR2

Intro

The GeForce 825M has core clock speeds of 850 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare those specifications to the GeForce 8600 GT 256MB DDR2, which features a GPU core clock speed of 540 MHz, and 256 MB of DDR2 memory running at 400 MHz through a 128-bit bus. It also is comprised of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M 33 Watts
GeForce 8600 GT 256MB DDR2 47 Watts
Difference: 14 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce 825M should be 13% quicker than the GeForce 8600 GT 256MB DDR2 in general, due to its greater bandwidth. (explain)

GeForce 825M 14400 MB/sec
GeForce 8600 GT 256MB DDR2 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 825M will be much (about 57%) faster with regards to anisotropic filtering than the GeForce 8600 GT 256MB DDR2. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce 8600 GT 256MB DDR2 8640 Mtexels/sec
Difference: 4960 (57%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 825M is a better choice, by far. (explain)

GeForce 825M 6800 Mpixels/sec
GeForce 8600 GT 256MB DDR2 4320 Mpixels/sec
Difference: 2480 (57%)

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 8600 GT 256MB DDR2

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 8600 GT 256MB DDR2
Manufacturer nVidia nVidia
Year January 27 2014 April 2007
Code Name GK208 G84
Memory 2048 MB 256 MB
Core Speed 850 MHz 540 MHz
Memory Speed 1800 MHz 800 MHz
Power (Max TDP) 33 watts 47 watts
Bandwidth 14400 MB/sec 12800 MB/sec
Texel Rate 13600 Mtexels/sec 8640 Mtexels/sec
Pixel Rate 6800 Mpixels/sec 4320 Mpixels/sec
Unified Shaders 384 32
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR3 DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 80 nm
Transistors (Unknown) million 289 million
Bus PCIe 3.0 x8 PCIe x16
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory 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's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the 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 the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 max fill rate.

Display Prices

Hide Prices

GeForce 825M

Amazon.com

Check prices at:

GeForce 8600 GT 256MB DDR2

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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