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GeForce GTX 1080 vs GeForce GTX 650

Intro

The GeForce GTX 1080 features a GPU core clock speed of 1607 MHz, and the 8192 MB of GDDR5X memory is set to run at 1251 MHz through a 256-bit bus. It also is comprised of 2560 Stream Processors, 160 TAUs, and 64 ROPs.

Compare those specs to the GeForce GTX 650, which has core speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

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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 1080 21942 points
GeForce GTX 650 2263 points
Difference: 19679 (870%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 1080 180 Watts
Difference: 116 Watts (181%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1080 should in theory be much superior to the GeForce GTX 650 in general. (explain)

GeForce GTX 1080 327680 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 247680 (310%)

Texel Rate

The GeForce GTX 1080 is quite a bit (about 659%) more effective at anisotropic filtering than the GeForce GTX 650. (explain)

GeForce GTX 1080 257120 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 223264 (659%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 1080 is superior to the GeForce GTX 650, and very much so. (explain)

GeForce GTX 1080 102848 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 85920 (508%)

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 1080

Amazon.com

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GeForce GTX 650

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 1080 GeForce GTX 650
Manufacturer nVidia nVidia
Year May 2016 September 2012
Code Name GP104-400 GK107
Memory 8192 MB 1024 MB
Core Speed 1607 MHz 1058 MHz
Memory Speed 10008 MHz 5000 MHz
Power (Max TDP) 180 watts 64 watts
Bandwidth 327680 MB/sec 80000 MB/sec
Texel Rate 257120 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 2560 384
Texture Mapping Units 160 32
Render Output Units 64 16
Bus Type GDDR5X GDDR5
Bus Width 256-bit 128-bit
Fab Process 16 nm 28 nm
Transistors 7200 million 1300 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.0
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, 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 most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 1080

Amazon.com

Check prices at:

GeForce GTX 650

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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