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GeForce 820M vs Radeon HD 4550 512MB

Intro

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

Compare that to the Radeon HD 4550 512MB, which has core clock speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
Radeon HD 4550 512MB 25 Watts
Difference: 10 Watts (67%)

Memory Bandwidth

The GeForce 820M should in theory be much faster than the Radeon HD 4550 512MB overall. (explain)

GeForce 820M 16000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 820M will be quite a bit (approximately 140%) more effective at AF than the Radeon HD 4550 512MB. (explain)

GeForce 820M 11504 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 6704 (140%)

Pixel Rate

The GeForce 820M should be a little bit (more or less 20%) more effective at full screen anti-aliasing than the Radeon HD 4550 512MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 820M 2876 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 476 (20%)

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 4550 512MB

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 4550 512MB
Manufacturer nVidia AMD
Year February 2014 Sep 30, 2008
Code Name GF117 RV710
Memory 2048 MB 512 MB
Core Speed 719 MHz 600 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) 15 watts 25 watts
Bandwidth 16000 MB/sec 12800 MB/sec
Texel Rate 11504 Mtexels/sec 4800 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 2400 Mpixels/sec
Unified Shaders 96 80(16x5)
Texture Mapping Units 16 8
Render Output Units 4 4
Bus Type DDR3 GDDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 242 million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 also depends on many 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 820M

Amazon.com

Check prices at:

Radeon HD 4550 512MB

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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