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GeForce GTX 980M vs Radeon HD 5870

Intro

The GeForce GTX 980M comes with a GPU core clock speed of 1038 MHz, and the 4096 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also features 1536 Stream Processors, 96 Texture Address Units, and 64 ROPs.

Compare all that to the Radeon HD 5870, which has a clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 1600(320x5) SPUs, 80 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
Radeon HD 5870 188 Watts
Difference: 88 Watts (88%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 20% faster than the GeForce GTX 980M in general, due to its higher bandwidth. (explain)

Radeon HD 5870 153600 MB/sec
GeForce GTX 980M 128000 MB/sec
Difference: 25600 (20%)

Texel Rate

The GeForce GTX 980M will be a lot (approximately 47%) better at anisotropic filtering than the Radeon HD 5870. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 31648 (47%)

Pixel Rate

The GeForce GTX 980M should be much (about 144%) more effective at AA than the Radeon HD 5870, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 39232 (144%)

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 980M

Amazon.com

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Radeon HD 5870

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 980M Radeon HD 5870
Manufacturer nVidia AMD
Year October 7 2014 September 23, 2009
Code Name GM204 Cypress XT
Memory 4096 MB 1024 MB
Core Speed 1038 MHz 850 MHz
Memory Speed 4000 MHz 4800 MHz
Power (Max TDP) 100 watts 188 watts
Bandwidth 128000 MB/sec 153600 MB/sec
Texel Rate 99648 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 1536 1600(320x5)
Texture Mapping Units 96 80
Render Output Units 64 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 2154 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: Bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video 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 maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 980M

Amazon.com

Check prices at:

Radeon HD 5870

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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