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GeForce GT 230 vs GeForce GTX 850M

Intro

The GeForce GT 230 uses a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The DDR3 RAM works at a frequency of 800 MHz on this model. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

Compare all that to the GeForce GTX 850M, which comes with clock speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 640 SPUs as well as 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 GT 230 65 Watts
Difference: 25 Watts (63%)

Memory Bandwidth

The GeForce GT 230 should theoretically be a bit faster than the GeForce GTX 850M overall. (explain)

GeForce GT 230 38400 MB/sec
GeForce GTX 850M 32000 MB/sec
Difference: 6400 (20%)

Texel Rate

The GeForce GTX 850M should be a lot (more or less 298%) faster with regards to anisotropic filtering than the GeForce GT 230. (explain)

GeForce GTX 850M 35040 Mtexels/sec
GeForce GT 230 8800 Mtexels/sec
Difference: 26240 (298%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 850M is superior to the GeForce GT 230, and very much so. (explain)

GeForce GTX 850M 14016 Mpixels/sec
GeForce GT 230 4400 Mpixels/sec
Difference: 9616 (219%)

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 GT 230

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 GT 230 GeForce GTX 850M
Manufacturer nVidia nVidia
Year October 2009 March 12 2014
Code Name GT218 GM107
Memory 1536 MB 2048 MB
Core Speed 550 MHz 876 MHz
Memory Speed 1600 MHz 2000 MHz
Power (Max TDP) 65 watts 40 watts
Bandwidth 38400 MB/sec 32000 MB/sec
Texel Rate 8800 Mtexels/sec 35040 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 14016 Mpixels/sec
Unified Shaders 32 640
Texture Mapping Units 16 40
Render Output Units 8 16
Bus Type DDR3 DDR3
Bus Width 192-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 260 million (Unknown) million
Bus PCIe 2.0 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 potential to reach the maximum fill rate.

Display Prices

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GeForce GT 230

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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