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GeForce GTS 150 vs GeForce GTX 850M

Intro

The GeForce GTS 150 features a GPU core speed of 740 MHz, and the 1024 MB of GDDR3 RAM is set to run at 500 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 16 ROPs.

Compare that to the GeForce GTX 850M, which features core clock speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
GeForce GTS 150 141 Watts
Difference: 101 Watts (253%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The GeForce GTS 150 is a lot (about 35%) more effective at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTS 150 47360 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 12320 (35%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 850M is a better choice, though only just barely. (explain)

GeForce GTX 850M 14016 Mpixels/sec
GeForce GTS 150 11840 Mpixels/sec
Difference: 2176 (18%)

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 GTS 150

Amazon.com

Check prices at:

GeForce GTX 850M

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 GTS 150 GeForce GTX 850M
Manufacturer nVidia nVidia
Year March 10, 2009 March 12 2014
Code Name G92b GM107
Memory 1024 MB 2048 MB
Core Speed 740 MHz 876 MHz
Memory Speed 1000 MHz 2000 MHz
Power (Max TDP) 141 watts 40 watts
Bandwidth 32000 MB/sec 32000 MB/sec
Texel Rate 47360 Mtexels/sec 35040 Mtexels/sec
Pixel Rate 11840 Mpixels/sec 14016 Mpixels/sec
Unified Shaders 128 640
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 DDR3
Bus Width 256-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of 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 in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTS 150

Amazon.com

Check prices at:

GeForce GTX 850M

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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