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GeForce GTX 880M vs Radeon HD 4870 512MB

Intro

The GeForce GTX 880M comes with a core clock frequency of 954 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 4870 512MB, which comes with a core clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M 130 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 20 Watts (15%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M should be 11% quicker than the Radeon HD 4870 512MB overall, due to its greater bandwidth. (explain)

GeForce GTX 880M 128000 MB/sec
Radeon HD 4870 512MB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce GTX 880M is much (about 307%) better at anisotropic filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 880M 122112 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 92112 (307%)

Pixel Rate

The GeForce GTX 880M will be quite a bit (more or less 154%) better at full screen anti-aliasing than the Radeon HD 4870 512MB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 880M 30528 Mpixels/sec
Radeon HD 4870 512MB 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

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Radeon HD 4870 512MB

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 880M Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year March 12 2014 Jun 25, 2008
Code Name GK104 RV770 XT
Memory 4096 MB 512 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 (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 880M

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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