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GeForce GT 450 (OEM) vs GeForce GTX 650

Intro

The GeForce GT 450 (OEM) has core clock speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 RAM. It features 144 SPUs along with 24 TAUs and 24 ROPs.

Compare those specs to the GeForce GTX 650, which comes with core clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GT 450 (OEM) 106 Watts
Difference: 42 Watts (66%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 450 (OEM) should perform a little bit faster than the GeForce GTX 650 in general. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 16000 (20%)

Texel Rate

The GeForce GTX 650 will be quite a bit (approximately 79%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 14896 (79%)

Pixel Rate

The GeForce GT 450 (OEM) should be a bit (more or less 12%) more effective at full screen anti-aliasing than the GeForce GTX 650, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 2032 (12%)

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 650

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 450 (OEM) GeForce GTX 650
Manufacturer nVidia nVidia
Year October 2010 September 2012
Code Name GF106 GK107
Memory 1536 MB 1024 MB
Core Speed 790 MHz 1058 MHz
Memory Speed 4000 MHz 5000 MHz
Power (Max TDP) 106 watts 64 watts
Bandwidth 96000 MB/sec 80000 MB/sec
Texel Rate 18960 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 144 384
Texture Mapping Units 24 32
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 450 (OEM)

Amazon.com

Check prices at:

GeForce GTX 650

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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