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GeForce GTX 980 vs Radeon HD 5550

Intro

The GeForce GTX 980 has a GPU clock speed of 1126 MHz, and the 4096 MB of GDDR5 memory is set to run at 1750 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 64 Raster Operation Units.

Compare those specs to the Radeon HD 5550, which uses a 40 nm design. AMD has clocked the core speed at 550 MHz. The DDR2 RAM is set to run at a speed of 400 MHz on this particular card. It features 320(64x5) SPUs along with 16 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 980 will be 1650% faster than the Radeon HD 5550 overall, because of its higher data rate. (explain)

GeForce GTX 980 224000 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 211200 (1650%)

Texel Rate

The GeForce GTX 980 is much (approximately 1538%) better at texture filtering than the Radeon HD 5550. (explain)

GeForce GTX 980 144128 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 135328 (1538%)

Pixel Rate

The GeForce GTX 980 will be quite a bit (more or less 1538%) better at FSAA than the Radeon HD 5550, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 980 72064 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 67664 (1538%)

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 GTX 980

Amazon.com

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Radeon HD 5550

Amazon.com

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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 GTX 980 Radeon HD 5550
Manufacturer nVidia AMD
Year September 2014 February 9, 2010
Code Name GM204-400 Redwood LE
Memory 4096 MB 512 MB
Core Speed 1126 MHz 550 MHz
Memory Speed 7000 MHz 800 MHz
Power (Max TDP) 165 watts (Unknown) watts
Bandwidth 224000 MB/sec 12800 MB/sec
Texel Rate 144128 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 72064 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 2048 320(64x5)
Texture Mapping Units 128 16
Render Output Units 64 8
Bus Type GDDR5 DDR2
Bus Width 256-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 5200 million 627 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.2 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 3.2

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. 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 output rate is also dependant on lots of 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

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GeForce GTX 980

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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