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GeForce 820M vs Radeon HD 6570 (OEM) 2GB

Intro

The GeForce 820M features a GPU clock speed of 719 MHz, and the 2048 MB of DDR3 RAM is set to run at 1000 MHz through a 64-bit bus. It also is made up of 96 SPUs, 16 Texture Address Units, and 4 Raster Operation Units.

Compare all that to the Radeon HD 6570 (OEM) 2GB, which comes with core speeds of 650 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs as well as 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
Radeon HD 6570 (OEM) 2GB 50 Watts
Difference: 35 Watts (233%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6570 (OEM) 2GB should perform a lot faster than the GeForce 820M overall. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
GeForce 820M 16000 MB/sec
Difference: 48000 (300%)

Texel Rate

The Radeon HD 6570 (OEM) 2GB is a lot (approximately 36%) faster with regards to anisotropic filtering than the GeForce 820M. (explain)

Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
GeForce 820M 11504 Mtexels/sec
Difference: 4096 (36%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6570 (OEM) 2GB is a better choice, by a large margin. (explain)

Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 2324 (81%)

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:

Radeon HD 6570 (OEM) 2GB

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 Radeon HD 6570 (OEM) 2GB
Manufacturer nVidia AMD
Year February 2014 February 2011
Code Name GF117 Turks
Memory 2048 MB 1024 MB
Core Speed 719 MHz 650 MHz
Memory Speed 2000 MHz 4000 MHz
Power (Max TDP) 15 watts 50 watts
Bandwidth 16000 MB/sec 64000 MB/sec
Texel Rate 11504 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 96 480
Texture Mapping Units 16 24
Render Output Units 4 8
Bus Type DDR3 GDDR5
Bus Width 64-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 715 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 820M

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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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