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GeForce 840M vs Radeon HD 4550 512MB

Intro

The GeForce 840M uses a 28 nm design. nVidia has set the core speed at 1029 MHz. The DDR3 RAM works at a speed of 1000 MHz on this particular card. It features 384 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 4550 512MB, which features core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 ROPs.

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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

Performance-wise, the GeForce 840M should in theory be a lot better than the Radeon HD 4550 512MB overall. (explain)

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

Texel Rate

The GeForce 840M will be a lot (approximately 415%) better 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

If running with high levels of AA is important to you, then the GeForce 840M is a better choice, by a large margin. (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 max amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units 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 lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach 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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