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GeForce GTX 980M vs Radeon HD 4870 2GB

Intro

The GeForce GTX 980M has a GPU core speed of 1038 MHz, and the 4096 MB of GDDR5 RAM runs at 1000 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 TAUs, and 64 Raster Operation Units.

Compare all of that to the Radeon HD 4870 2GB, which features core clock speeds of 750 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
Radeon HD 4870 2GB 150 Watts
Difference: 50 Watts (50%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980M should in theory be a bit better than the Radeon HD 4870 2GB in general. (explain)

GeForce GTX 980M 128000 MB/sec
Radeon HD 4870 2GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 980M will be much (more or less 232%) faster with regards to texture filtering than the Radeon HD 4870 2GB. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 4870 2GB 30000 Mtexels/sec
Difference: 69648 (232%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 980M is a better choice, and very much so. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 4870 2GB 12000 Mpixels/sec
Difference: 54432 (454%)

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

Check prices at:

Radeon HD 4870 2GB

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 GTX 980M Radeon HD 4870 2GB
Manufacturer nVidia AMD
Year October 7 2014 Jun 25, 2008
Code Name GM204 RV770 XT
Memory 4096 MB 2048 MB
Core Speed 1038 MHz 750 MHz
Memory Speed 4000 MHz 3600 MHz
Power (Max TDP) 100 watts 150 watts
Bandwidth 128000 MB/sec 115200 MB/sec
Texel Rate 99648 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 66432 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 1536 800(160x5)
Texture Mapping Units 96 40
Render Output Units 64 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 956 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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 980M

Amazon.com

Check prices at:

Radeon HD 4870 2GB

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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