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GeForce GTX 950M vs Radeon HD 3870 512MB

Intro

The GeForce GTX 950M uses a 28 nm design. nVidia has clocked the core frequency at 914 MHz. The DDR3 RAM is set to run at a frequency of 1000 MHz on this model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3870 512MB, which has clock speeds of 775 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
Radeon HD 3870 512MB 106 Watts
Difference: 51 Watts (93%)

Memory Bandwidth

Performance-wise, the Radeon HD 3870 512MB should in theory be much better than the GeForce GTX 950M overall. (explain)

Radeon HD 3870 512MB 57600 MB/sec
GeForce GTX 950M 32000 MB/sec
Difference: 25600 (80%)

Texel Rate

The GeForce GTX 950M should be quite a bit (approximately 195%) better at texture filtering than the Radeon HD 3870 512MB. (explain)

GeForce GTX 950M 36560 Mtexels/sec
Radeon HD 3870 512MB 12400 Mtexels/sec
Difference: 24160 (195%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 950M is the winner, though only just barely. (explain)

GeForce GTX 950M 14624 Mpixels/sec
Radeon HD 3870 512MB 12400 Mpixels/sec
Difference: 2224 (18%)

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 3870 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 3870 512MB
Manufacturer nVidia AMD
Year March 12 2015 Nov 19, 2007
Code Name GM107 RV670 XT
Memory 2048 MB 512 MB
Core Speed 914 MHz 775 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 55 watts 106 watts
Bandwidth 32000 MB/sec 57600 MB/sec
Texel Rate 36560 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 14624 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 640 320(64x5)
Texture Mapping Units 40 16
Render Output Units 16 16
Bus Type DDR3 GDDR3
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range 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 calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 950M

Amazon.com

Check prices at:

Radeon HD 3870 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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