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GeForce GTX 880M vs Radeon HD 4870 512MB

Intro

The GeForce GTX 880M makes use of a 28 nm design. nVidia has clocked the core frequency at 954 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific card. It features 1536 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon HD 4870 512MB, which uses a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this particular model. It features 800(160x5) SPUs along with 40 TAUs 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

The GeForce GTX 880M should theoretically be a little bit faster than the Radeon HD 4870 512MB overall. (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 texture 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

If running with a high resolution is important to you, then the GeForce GTX 880M is the winner, by a large margin. (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

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.

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: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

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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