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GeForce 825M vs GeForce 8600 GT 1GB DDR2

Intro

The GeForce 825M comes with a clock speed of 850 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit memory bus, and makes use of a 28 nm design. It is comprised of 384 SPUs, 16 TAUs, and 8 ROPs.

Compare those specifications to the GeForce 8600 GT 1GB DDR2, which makes use of a 80 nm design. nVidia has clocked the core frequency at 540 MHz. The DDR2 RAM is set to run at a speed of 400 MHz on this particular model. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 825M 33 Watts
GeForce 8600 GT 1GB DDR2 47 Watts
Difference: 14 Watts (42%)

Memory Bandwidth

Theoretically speaking, the GeForce 825M should perform a small bit faster than the GeForce 8600 GT 1GB DDR2 in general. (explain)

GeForce 825M 14400 MB/sec
GeForce 8600 GT 1GB DDR2 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 825M will be much (more or less 57%) better at texture filtering than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce 8600 GT 1GB DDR2 8640 Mtexels/sec
Difference: 4960 (57%)

Pixel Rate

The GeForce 825M should be a lot (more or less 57%) better at full screen anti-aliasing than the GeForce 8600 GT 1GB DDR2, and able to handle higher resolutions better. (explain)

GeForce 825M 6800 Mpixels/sec
GeForce 8600 GT 1GB 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 1GB 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 1GB DDR2
Manufacturer nVidia nVidia
Year January 27 2014 April 2007
Code Name GK208 G84
Memory 2048 MB 1024 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: Bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 825M

Amazon.com

Check prices at:

GeForce 8600 GT 1GB 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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