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GeForce GTS 150 vs GeForce GTX 850M

Intro

The GeForce GTS 150 has a GPU core clock speed of 740 MHz, and the 1024 MB of GDDR3 memory runs at 500 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specs to the GeForce GTX 850M, which has a core clock speed of 876 MHz and a DDR3 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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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 the exact same bandwidth, so in theory they should have identical performance. (explain)

Texel Rate

The GeForce GTS 150 will be quite a bit (more or less 35%) faster with regards to 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 using a high resolution is important to you, then the GeForce GTX 850M is superior to the GeForce GTS 150, but it probably won't make a huge difference. (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: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

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