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GeForce GTX 650 Ti 2GB vs GeForce GTX 870M

Intro

The GeForce GTX 650 Ti 2GB makes use of a 28 nm design. nVidia has set the core frequency at 928 MHz. The GDDR5 memory works at a frequency of 1350 MHz on this particular card. It features 768 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 870M, which makes use of a 28 nm design. nVidia has clocked the core speed at 941 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this card. It features 1344 SPUs along with 112 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the GeForce GTX 870M should in theory be just a bit superior to the GeForce GTX 650 Ti 2GB in general. (explain)

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

Texel Rate

The GeForce GTX 870M is much (about 77%) more effective at anisotropic filtering 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

If using a high screen resolution is important to you, then the GeForce GTX 870M is the winner, and very much so. (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

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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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the 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 card's memory bandwidth, the faster 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 per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability 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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