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GeForce 820M vs GeForce 8500 GT

Intro

The GeForce 820M makes use of a 28 nm design. nVidia has set the core frequency at 719 MHz. The DDR3 memory is set to run at a frequency of 1000 MHz on this specific card. It features 96 SPUs as well as 16 Texture Address Units and 4 ROPs.

Compare all of that to the GeForce 8500 GT, which has clock speeds of 450 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 16 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
GeForce 8500 GT 45 Watts
Difference: 30 Watts (200%)

Memory Bandwidth

The GeForce 820M, in theory, should be quite a bit faster than the GeForce 8500 GT in general. (explain)

GeForce 820M 16000 MB/sec
GeForce 8500 GT 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 820M should be quite a bit (more or less 220%) better at AF than the GeForce 8500 GT. (explain)

GeForce 820M 11504 Mtexels/sec
GeForce 8500 GT 3600 Mtexels/sec
Difference: 7904 (220%)

Pixel Rate

The GeForce 820M should be a lot (more or less 60%) faster with regards to AA than the GeForce 8500 GT, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce 820M 2876 Mpixels/sec
GeForce 8500 GT 1800 Mpixels/sec
Difference: 1076 (60%)

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 820M

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 820M GeForce 8500 GT
Manufacturer nVidia nVidia
Year February 2014 April 2007
Code Name GF117 G86
Memory 2048 MB 512 MB
Core Speed 719 MHz 450 MHz
Memory Speed 2000 MHz 800 MHz
Power (Max TDP) 15 watts 45 watts
Bandwidth 16000 MB/sec 12800 MB/sec
Texel Rate 11504 Mtexels/sec 3600 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 1800 Mpixels/sec
Unified Shaders 96 16
Texture Mapping Units 16 8
Render Output Units 4 4
Bus Type DDR3 DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 80 nm
Transistors (Unknown) million 210 million
Bus PCIe 2.0 x16 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 maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

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GeForce 820M

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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