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GeForce GTX 880M vs Radeon HD 4870 1GB

Intro

The GeForce GTX 880M comes with clock speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 4870 1GB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
Radeon HD 4870 1GB 150 Watts
Difference: 20 Watts (15%)

Memory Bandwidth

The GeForce GTX 880M should in theory be a small bit faster than the Radeon HD 4870 1GB in general. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon HD 4870 1GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 880M should be much (approximately 307%) better at AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 92112 (307%)

Pixel Rate

The GeForce GTX 880M is quite a bit (approximately 154%) better at full screen anti-aliasing than the Radeon HD 4870 1GB, and also should be capable of handling higher resolutions better. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 4870 1GB 12000 Mpixels/sec
Difference: 18528 (154%)

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 880M

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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 880M Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GK104 RV770 XT
Memory 4096 MB 1024 MB
Core Speed 954 MHz 750 MHz
Memory Speed 4000 MHz 3600 MHz
Power (Max TDP) 130 watts 150 watts
Bandwidth 128000 MB/sec 115200 MB/sec
Texel Rate 122112 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 30528 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 1536 800(160x5)
Texture Mapping Units 128 40
Render Output Units 32 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 (counted in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 880M

Amazon.com

Radeon HD 4870 1GB

Amazon.com

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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