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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 memory. It features 144 SPUs as well as 24 Texture Address Units and 24 ROPs.

Compare all that to the GeForce GTX 650, which has a GPU core clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM set to run at 1250 MHz through a 128-bit bus. It also features 384 SPUs, 32 TAUs, and 16 Raster Operation 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) is 20% faster than the GeForce GTX 650 in general, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 650 should be a lot (approximately 79%) more effective at AF 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 little bit (approximately 12%) more effective at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher resolutions without slowing down too much. (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

Display 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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video 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 that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum 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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