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GeForce 820M vs Radeon HD 4550 256MB

Intro

The GeForce 820M uses a 28 nm design. nVidia has set the core speed at 719 MHz. The DDR3 RAM works at a frequency of 1000 MHz on this model. It features 96 SPUs along with 16 TAUs and 4 Rasterization Operator Units.

Compare all that to the Radeon HD 4550 256MB, which features GPU core speed of 600 MHz, and 256 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M 15 Watts
Radeon HD 4550 256MB 25 Watts
Difference: 10 Watts (67%)

Memory Bandwidth

In theory, the GeForce 820M will be 25% faster than the Radeon HD 4550 256MB in general, because of its higher data rate. (explain)

GeForce 820M 16000 MB/sec
Radeon HD 4550 256MB 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 820M should be quite a bit (more or less 140%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce 820M 11504 Mtexels/sec
Radeon HD 4550 256MB 4800 Mtexels/sec
Difference: 6704 (140%)

Pixel Rate

The GeForce 820M should be a bit (about 20%) more effective at FSAA than the Radeon HD 4550 256MB, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce 820M 2876 Mpixels/sec
Radeon HD 4550 256MB 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 256MB

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 256MB
Manufacturer nVidia AMD
Year February 2014 Sep 30, 2008
Code Name GF117 RV710
Memory 2048 MB 256 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 DDR3
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: Bandwidth is the max amount of information (in units of MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, 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 texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 820M

Amazon.com

Check prices at:

Radeon HD 4550 256MB

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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