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GeForce GTX 950M vs Radeon HD 4870 512MB

Intro

The GeForce GTX 950M has core speeds of 914 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4870 512MB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
Radeon HD 4870 512MB 150 Watts
Difference: 95 Watts (173%)

Memory Bandwidth

Performance-wise, the Radeon HD 4870 512MB should in theory be a lot superior to the GeForce GTX 950M in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GTX 950M 32000 MB/sec
Difference: 83200 (260%)

Texel Rate

The GeForce GTX 950M is much (approximately 22%) faster with regards to texture filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 950M 36560 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 6560 (22%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 950M is superior to the Radeon HD 4870 512MB, and very much so. (explain)

GeForce GTX 950M 14624 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 2624 (22%)

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 950M

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 950M Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year March 12 2015 Jun 25, 2008
Code Name GM107 RV770 XT
Memory 2048 MB 512 MB
Core Speed 914 MHz 750 MHz
Memory Speed 2000 MHz 3600 MHz
Power (Max TDP) 55 watts 150 watts
Bandwidth 32000 MB/sec 115200 MB/sec
Texel Rate 36560 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 14624 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 640 800(160x5)
Texture Mapping Units 40 40
Render Output Units 16 16
Bus Type DDR3 GDDR5
Bus Width 128-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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably 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

Hide Prices

GeForce GTX 950M

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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