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GeForce GT 450 (OEM) vs GeForce GTX 275

Intro

The GeForce GT 450 (OEM) features a clock speed of 790 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit bus, and uses a 40 nm design. It features 144 SPUs, 24 Texture Address Units, and 24 ROPs.

Compare those specs to the GeForce GTX 275, which features GPU core speed of 633 MHz, and 896 MB of GDDR3 RAM set to run at 1134 MHz through a 448-bit bus. It also is comprised of 240 SPUs, 80 TAUs, and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
GeForce GTX 275 219 Watts
Difference: 113 Watts (107%)

Memory Bandwidth

Performance-wise, the GeForce GTX 275 should theoretically be a lot superior to the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 275 127008 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 31008 (32%)

Texel Rate

The GeForce GTX 275 is a lot (about 167%) more effective at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 31680 (167%)

Pixel Rate

The GeForce GT 450 (OEM) should be just a bit (about 7%) better at anti-aliasing than the GeForce GTX 275, and also should be able to handle higher resolutions better. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce GTX 275 17724 Mpixels/sec
Difference: 1236 (7%)

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 275

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 275
Manufacturer nVidia nVidia
Year October 2010 April 9, 2009
Code Name GF106 G200b
Memory 1536 MB 896 MB
Core Speed 790 MHz 633 MHz
Memory Speed 4000 MHz 2268 MHz
Power (Max TDP) 106 watts 219 watts
Bandwidth 96000 MB/sec 127008 MB/sec
Texel Rate 18960 Mtexels/sec 50640 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 17724 Mpixels/sec
Unified Shaders 144 240
Texture Mapping Units 24 80
Render Output Units 24 28
Bus Type GDDR5 GDDR3
Bus Width 192-bit 448-bit
Fab Process 40 nm 55 nm
Transistors 1170 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 11 DirectX 10
OpenGL Version OpenGL 4.1 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 fill rate also depends on many other factors, most notably 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 275

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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