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GeForce GTX 650 vs GeForce GTX 870M

Intro

The GeForce GTX 650 has a core clock speed of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It features 384 SPUs, 32 TAUs, and 16 ROPs.

Compare all that to the GeForce GTX 870M, which makes use of a 28 nm design. nVidia has set the core frequency at 941 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this card. It features 1344 SPUs as well as 112 TAUs and 24 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 870M 4770 points
GeForce GTX 650 2263 points
Difference: 2507 (111%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 870M 110 Watts
Difference: 46 Watts (72%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 870M should perform just a bit faster than the GeForce GTX 650 in general. (explain)

GeForce GTX 870M 96000 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 16000 (20%)

Texel Rate

The GeForce GTX 870M is much (more or less 211%) faster with regards to AF than the GeForce GTX 650. (explain)

GeForce GTX 870M 105392 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 71536 (211%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 870M is superior to the GeForce GTX 650, and very much so. (explain)

GeForce GTX 870M 22584 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 5656 (33%)

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

Amazon.com

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GeForce GTX 870M

Amazon.com

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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 GeForce GTX 870M
Manufacturer nVidia nVidia
Year September 2012 March 12 2014
Code Name GK107 GK104
Memory 1024 MB 3072 MB
Core Speed 1058 MHz 941 MHz
Memory Speed 5000 MHz 4000 MHz
Power (Max TDP) 64 watts 110 watts
Bandwidth 80000 MB/sec 96000 MB/sec
Texel Rate 33856 Mtexels/sec 105392 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 22584 Mpixels/sec
Unified Shaders 384 1344
Texture Mapping Units 32 112
Render Output Units 16 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-bit
Fab Process 28 nm 28 nm
Transistors 1300 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 information (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 650

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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