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GeForce GT 450 (OEM) vs Radeon HD 5850

Intro

The GeForce GT 450 (OEM) makes use of a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this model. It features 144 SPUs along with 24 Texture Address Units and 24 Rasterization Operator Units.

Compare those specifications to the Radeon HD 5850, which features a clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is made up of 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
Radeon HD 5850 151 Watts
Difference: 45 Watts (42%)

Memory Bandwidth

The Radeon HD 5850 should theoretically be much faster than the GeForce GT 450 (OEM) overall. (explain)

Radeon HD 5850 128000 MB/sec
GeForce GT 450 (OEM) 96000 MB/sec
Difference: 32000 (33%)

Texel Rate

The Radeon HD 5850 is a lot (approximately 175%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 5850 52200 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 33240 (175%)

Pixel Rate

The Radeon HD 5850 should be quite a bit (approximately 22%) better at full screen anti-aliasing than the GeForce GT 450 (OEM), and also will be able to handle higher resolutions better. (explain)

Radeon HD 5850 23200 Mpixels/sec
GeForce GT 450 (OEM) 18960 Mpixels/sec
Difference: 4240 (22%)

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

Display Prices

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GeForce GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 5850

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) Radeon HD 5850
Manufacturer nVidia AMD
Year October 2010 September 30, 2009
Code Name GF106 Cypress PRO
Memory 1536 MB 1024 MB
Core Speed 790 MHz 725 MHz
Memory Speed 4000 MHz 4000 MHz
Power (Max TDP) 106 watts 151 watts
Bandwidth 96000 MB/sec 128000 MB/sec
Texel Rate 18960 Mtexels/sec 52200 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 23200 Mpixels/sec
Unified Shaders 144 1440(288x5)
Texture Mapping Units 24 72
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 2154 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

Hide Prices

GeForce GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 5850

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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