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GeForce GTX 650 Ti 2GB vs GeForce GTX 870M

Intro

The GeForce GTX 650 Ti 2GB uses a 28 nm design. nVidia has set the core frequency at 928 MHz. The GDDR5 RAM works at a frequency of 1350 MHz on this particular model. It features 768 SPUs as well as 64 TAUs and 16 ROPs.

Compare that to the GeForce GTX 870M, which comes with GPU clock speed of 941 MHz, and 3072 MB of GDDR5 memory set to run at 1000 MHz through a 192-bit bus. It also is comprised of 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 870M should in theory be a bit faster than the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce GTX 870M 96000 MB/sec
GeForce GTX 650 Ti 2GB 86400 MB/sec
Difference: 9600 (11%)

Texel Rate

The GeForce GTX 870M should be a lot (about 77%) faster with regards to AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 870M 105392 Mtexels/sec
GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
Difference: 46000 (77%)

Pixel Rate

The GeForce GTX 870M will be quite a bit (about 52%) more effective at FSAA than the GeForce GTX 650 Ti 2GB, and should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 870M 22584 Mpixels/sec
GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
Difference: 7736 (52%)

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 650 Ti 2GB

Amazon.com

Check prices at:

GeForce GTX 870M

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

Display Specifications

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Model GeForce GTX 650 Ti 2GB GeForce GTX 870M
Manufacturer nVidia nVidia
Year October 2012 March 12 2014
Code Name GK106 GK104
Memory 2048 MB 3072 MB
Core Speed 928 MHz 941 MHz
Memory Speed 5400 MHz 4000 MHz
Power (Max TDP) 110 watts 110 watts
Bandwidth 86400 MB/sec 96000 MB/sec
Texel Rate 59392 Mtexels/sec 105392 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 22584 Mpixels/sec
Unified Shaders 768 1344
Texture Mapping Units 64 112
Render Output Units 16 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-bit
Fab Process 28 nm 28 nm
Transistors 2540 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card 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 one second.

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

Display Prices

Hide Prices

GeForce GTX 650 Ti 2GB

Amazon.com

Check prices at:

GeForce GTX 870M

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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