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GeForce 840M vs Radeon HD 4550 512MB

Intro

The GeForce 840M comes with clock speeds of 1029 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 384 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare that to the Radeon HD 4550 512MB, which comes with clock speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB 25 Watts
GeForce 840M 30 Watts
Difference: 5 Watts (20%)

Memory Bandwidth

Theoretically, the GeForce 840M should be much faster than the Radeon HD 4550 512MB in general. (explain)

GeForce 840M 16000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 840M is a lot (about 415%) more effective at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

GeForce 840M 24696 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 19896 (415%)

Pixel Rate

The GeForce 840M will be quite a bit (more or less 243%) faster with regards to FSAA than the Radeon HD 4550 512MB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce 840M 8232 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 5832 (243%)

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 840M

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 840M Radeon HD 4550 512MB
Manufacturer nVidia AMD
Year March 12 2014 Sep 30, 2008
Code Name GM108 RV710
Memory 2048 MB 512 MB
Core Speed 1029 MHz 600 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) 30 watts 25 watts
Bandwidth 16000 MB/sec 12800 MB/sec
Texel Rate 24696 Mtexels/sec 4800 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 2400 Mpixels/sec
Unified Shaders 384 80(16x5)
Texture Mapping Units 24 8
Render Output Units 8 4
Bus Type DDR3 GDDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 242 million
Bus PCIe 3.0 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 largest amount of data (measured in MB per second) that can be transferred 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 the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 840M

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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