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GeForce GTX 980M vs Radeon HD 4870 1GB

Intro

The GeForce GTX 980M features core clock speeds of 1038 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1536 SPUs as well as 96 TAUs and 64 Rasterization Operator Units.

Compare all of that to the Radeon HD 4870 1GB, which features clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M 100 Watts
Radeon HD 4870 1GB 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 1GB in general. (explain)

GeForce GTX 980M 128000 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 980M will be much (more or less 232%) better at AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 980M 99648 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 69648 (232%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (explain)

GeForce GTX 980M 66432 Mpixels/sec
Radeon HD 4870 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year October 7 2014 Jun 25, 2008
Code Name GM204 RV770 XT
Memory 4096 MB 1024 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 max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics 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 number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 980M

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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