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GeForce GT 450 (OEM) vs Radeon HD 6450 (OEM)

Intro

The GeForce GT 450 (OEM) comes with a clock frequency of 790 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It is comprised of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

Compare all that to the Radeon HD 6450 (OEM), which features core clock speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GT 450 (OEM) 106 Watts
Difference: 75 Watts (242%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should in theory be quite a bit better than the Radeon HD 6450 (OEM) in general. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 83200 (650%)

Texel Rate

The GeForce GT 450 (OEM) should be a lot (approximately 279%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GT 450 (OEM) 18960 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 13960 (279%)

Pixel Rate

The GeForce GT 450 (OEM) will be much (about 658%) faster with regards to anti-aliasing than the Radeon HD 6450 (OEM), and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 16460 (658%)

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:

Radeon HD 6450 (OEM)

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 6450 (OEM)
Manufacturer nVidia AMD
Year October 2010 February 2011
Code Name GF106 Caicos
Memory 1536 MB 512 MB
Core Speed 790 MHz 625 MHz
Memory Speed 4000 MHz 1600 MHz
Power (Max TDP) 106 watts 31 watts
Bandwidth 96000 MB/sec 12800 MB/sec
Texel Rate 18960 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 144 160
Texture Mapping Units 24 8
Render Output Units 24 4
Bus Type GDDR5 GDDR3
Bus Width 192-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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