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GeForce 840M vs Radeon HD 5550

Intro

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

Compare that to the Radeon HD 5550, which has a core clock speed of 550 MHz and a DDR2 memory speed of 400 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 840M should be 25% quicker than the Radeon HD 5550 in general, due to its higher bandwidth. (explain)

GeForce 840M 16000 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 840M should be quite a bit (approximately 181%) better at anisotropic filtering than the Radeon HD 5550. (explain)

GeForce 840M 24696 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 15896 (181%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 840M is superior to the Radeon HD 5550, and very much so. (explain)

GeForce 840M 8232 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 3832 (87%)

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 5550

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 5550
Manufacturer nVidia AMD
Year March 12 2014 February 9, 2010
Code Name GM108 Redwood LE
Memory 2048 MB 512 MB
Core Speed 1029 MHz 550 MHz
Memory Speed 2000 MHz 800 MHz
Power (Max TDP) 30 watts (Unknown) watts
Bandwidth 16000 MB/sec 12800 MB/sec
Texel Rate 24696 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 384 320(64x5)
Texture Mapping Units 24 16
Render Output Units 8 8
Bus Type DDR3 DDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 627 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 840M

Amazon.com

Check prices at:

Radeon HD 5550

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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