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GeForce GT 450 (OEM) vs Radeon HD 6770

Intro

The GeForce GT 450 (OEM) has core speeds of 790 MHz on the GPU, and 1000 MHz on the 1536 MB of GDDR5 memory. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Compare those specs to the Radeon HD 6770, which comes with clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM) 106 Watts
Radeon HD 6770 108 Watts
Difference: 2 Watts (2%)

Memory Bandwidth

The GeForce GT 450 (OEM), in theory, should be quite a bit faster than the Radeon HD 6770 in general. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 28800 (43%)

Texel Rate

The Radeon HD 6770 will be much (approximately 90%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce GT 450 (OEM) 18960 Mtexels/sec
Difference: 17040 (90%)

Pixel Rate

The GeForce GT 450 (OEM) is a lot (more or less 32%) better at full screen anti-aliasing than the Radeon HD 6770, and will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
Radeon HD 6770 14400 Mpixels/sec
Difference: 4560 (32%)

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 6770

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 6770
Manufacturer nVidia AMD
Year October 2010 January 2011
Code Name GF106 Juniper XT
Memory 1536 MB 512 MB
Core Speed 790 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 106 watts 108 watts
Bandwidth 96000 MB/sec 67200 MB/sec
Texel Rate 18960 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 18960 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 144 800
Texture Mapping Units 24 40
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be processed in one second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 450 (OEM)

Amazon.com

Check prices at:

Radeon HD 6770

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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