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GeForce GTX 960M vs Radeon HD 3870 X2 512MB

Intro

The GeForce GTX 960M features core speeds of 1096 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 RAM. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3870 X2 512MB, which features clock speeds of 825 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3870 X2 512MB should be a lot faster than the GeForce GTX 960M overall. (explain)

Radeon HD 3870 X2 512MB 115200 MB/sec
GeForce GTX 960M 64000 MB/sec
Difference: 51200 (80%)

Texel Rate

The GeForce GTX 960M will be a lot (approximately 66%) better at AF than the Radeon HD 3870 X2 512MB. (explain)

GeForce GTX 960M 43840 Mtexels/sec
Radeon HD 3870 X2 512MB 26400 Mtexels/sec
Difference: 17440 (66%)

Pixel Rate

The Radeon HD 3870 X2 512MB should be a lot (about 51%) more effective at anti-aliasing than the GeForce GTX 960M, and able to handle higher screen resolutions more effectively. (explain)

Radeon HD 3870 X2 512MB 26400 Mpixels/sec
GeForce GTX 960M 17536 Mpixels/sec
Difference: 8864 (51%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 960M

Amazon.com

Check prices at:

Radeon HD 3870 X2 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 960M Radeon HD 3870 X2 512MB
Manufacturer nVidia AMD
Year March 12 2015 Jan 28, 2008
Code Name GM107 R680
Memory 2048 MB 512 MB (x2)
Core Speed 1096 MHz 825 MHz (x2)
Memory Speed 4000 MHz 1800 MHz (x2)
Power (Max TDP) 65 watts (Unknown) watts
Bandwidth 64000 MB/sec 115200 MB/sec
Texel Rate 43840 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 17536 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 640 320(64x5) (x2)
Texture Mapping Units 40 16 (x2)
Render Output Units 16 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 960M

Amazon.com

Check prices at:

Radeon HD 3870 X2 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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