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GeForce GT 450 (OEM) vs GeForce GTX 285 1GB

Intro

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

Compare that to the GeForce GTX 285 1GB, which has clock speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs as well as 80 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 98 Watts (92%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 285 1GB should in theory be quite a bit superior to the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 62976 (66%)

Texel Rate

The GeForce GTX 285 1GB will be much (approximately 173%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 285 1GB 51840 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 32880 (173%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 285 1GB is the winner, not by a very large margin though. (explain)

GeForce GTX 285 1GB 20736 Mpixels/sec
GeForce GT 450 (OEM) 18960 Mpixels/sec
Difference: 1776 (9%)

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

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GeForce GTX 285 1GB

Amazon.com

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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 285 1GB
Manufacturer nVidia nVidia
Year October 2010 January 15, 2009
Code Name GF106 G200b
Memory 1536 MB 1024 MB
Core Speed 790 MHz 648 MHz
Memory Speed 4000 MHz 2484 MHz
Power (Max TDP) 106 watts 204 watts
Bandwidth 96000 MB/sec 158976 MB/sec
Texel Rate 18960 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 144 240
Texture Mapping Units 24 80
Render Output Units 24 32
Bus Type GDDR5 GDDR3
Bus Width 192-bit 512-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 maximum amount of data (in units of MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory 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 285 1GB

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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