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GeForce GTX 950M vs Radeon HD 3870 1GB

Intro

The GeForce GTX 950M has a clock frequency of 914 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the Radeon HD 3870 1GB, which comes with core speeds of 775 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR4 memory. It features 320(64x5) SPUs along with 16 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M 55 Watts
Radeon HD 3870 1GB 106 Watts
Difference: 51 Watts (93%)

Memory Bandwidth

As far as performance goes, the Radeon HD 3870 1GB should theoretically be a lot superior to the GeForce GTX 950M in general. (explain)

Radeon HD 3870 1GB 72000 MB/sec
GeForce GTX 950M 32000 MB/sec
Difference: 40000 (125%)

Texel Rate

The GeForce GTX 950M should be quite a bit (approximately 195%) better at anisotropic filtering than the Radeon HD 3870 1GB. (explain)

GeForce GTX 950M 36560 Mtexels/sec
Radeon HD 3870 1GB 12400 Mtexels/sec
Difference: 24160 (195%)

Pixel Rate

The GeForce GTX 950M should be a bit (more or less 18%) better at full screen anti-aliasing than the Radeon HD 3870 1GB, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 950M 14624 Mpixels/sec
Radeon HD 3870 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year March 12 2015 Nov 19, 2007
Code Name GM107 RV670 XT
Memory 2048 MB 1024 MB
Core Speed 914 MHz 775 MHz
Memory Speed 2000 MHz 2250 MHz
Power (Max TDP) 55 watts 106 watts
Bandwidth 32000 MB/sec 72000 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 GDDR4
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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could 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 Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 950M

Amazon.com

Check prices at:

Radeon HD 3870 1GB

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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