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GeForce GTX 275 vs GeForce GTX 850M

Intro

The GeForce GTX 275 has a GPU clock speed of 633 MHz, and the 896 MB of GDDR3 RAM runs at 1134 MHz through a 448-bit bus. It also features 240 SPUs, 80 TAUs, and 28 Raster Operation Units.

Compare those specs to the GeForce GTX 850M, which makes use of a 28 nm design. nVidia has clocked the core speed at 876 MHz. The DDR3 RAM runs at a frequency of 1000 MHz on this specific model. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
GeForce GTX 275 219 Watts
Difference: 179 Watts (448%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 should be 297% faster than the GeForce GTX 850M overall, due to its higher bandwidth. (explain)

GeForce GTX 275 127008 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 95008 (297%)

Texel Rate

The GeForce GTX 275 is much (more or less 45%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GTX 850M 35040 Mtexels/sec
Difference: 15600 (45%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 275 is superior to the GeForce GTX 850M, and very much so. (explain)

GeForce GTX 275 17724 Mpixels/sec
GeForce GTX 850M 14016 Mpixels/sec
Difference: 3708 (26%)

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 275

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 GTX 275 GeForce GTX 850M
Manufacturer nVidia nVidia
Year April 9, 2009 March 12 2014
Code Name G200b GM107
Memory 896 MB 2048 MB
Core Speed 633 MHz 876 MHz
Memory Speed 2268 MHz 2000 MHz
Power (Max TDP) 219 watts 40 watts
Bandwidth 127008 MB/sec 32000 MB/sec
Texel Rate 50640 Mtexels/sec 35040 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 14016 Mpixels/sec
Unified Shaders 240 640
Texture Mapping Units 80 40
Render Output Units 28 16
Bus Type GDDR3 DDR3
Bus Width 448-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 1400 million (Unknown) million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.1 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 applied in one second. This number is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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

Display Prices

Hide Prices

GeForce GTX 275

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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