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GeForce GT 450 (OEM) vs GeForce GTX 870M

Intro

The GeForce GT 450 (OEM) makes use of a 40 nm design. nVidia has set the core frequency at 790 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular card. It features 144 SPUs along with 24 Texture Address Units and 24 Rasterization Operator Units.

Compare those specs to the GeForce GTX 870M, which features core clock speeds of 941 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
GeForce GTX 870M 110 Watts
Difference: 4 Watts (4%)

Memory Bandwidth

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

Texel Rate

The GeForce GTX 870M is quite a bit (about 456%) better at AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 870M 105392 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 86432 (456%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 870M is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 870M 22584 Mpixels/sec
GeForce GT 450 (OEM) 18960 Mpixels/sec
Difference: 3624 (19%)

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 450 (OEM)

Amazon.com

Check prices at:

GeForce GTX 870M

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

Display Specifications

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Model GeForce GT 450 (OEM) GeForce GTX 870M
Manufacturer nVidia nVidia
Year October 2010 March 12 2014
Code Name GF106 GK104
Memory 1536 MB 3072 MB
Core Speed 790 MHz 941 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 106 watts 110 watts
Bandwidth 96000 MB/sec 96000 MB/sec
Texel Rate 18960 Mtexels/sec 105392 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 22584 Mpixels/sec
Unified Shaders 144 1344
Texture Mapping Units 24 112
Render Output Units 24 24
Bus Type GDDR5 GDDR5
Bus Width 192-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 1170 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.5

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

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GT 450 (OEM)

Amazon.com

Check prices at:

GeForce GTX 870M

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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