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GeForce GTX 550 Ti vs Radeon HD 6450 (OEM) 1GB

Intro

The GeForce GTX 550 Ti makes use of a 40 nm design. nVidia has set the core speed at 900 MHz. The GDDR5 RAM is set to run at a frequency of 1026 MHz on this card. It features 192 SPUs as well as 32 Texture Address Units and 24 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which has clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 160 SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB 31 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 85 Watts (274%)

Memory Bandwidth

The GeForce GTX 550 Ti should in theory perform quite a bit faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 69696 (242%)

Texel Rate

The GeForce GTX 550 Ti is a lot (approximately 380%) better at AF than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GTX 550 Ti 28800 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 22800 (380%)

Pixel Rate

The GeForce GTX 550 Ti should be quite a bit (approximately 620%) better at AA than the Radeon HD 6450 (OEM) 1GB, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 18600 (620%)

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

GeForce GTX 550 Ti

Radeon HD 6450 (OEM) 1GB

Specifications

Display Specifications

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Model GeForce GTX 550 Ti Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia AMD
Year March 2011 February 2011
Code Name GF116 Caicos
Memory 1024 MB 1024 MB
Core Speed 900 MHz 750 MHz
Memory Speed 4104 MHz 3600 MHz
Power (Max TDP) 116 watts 31 watts
Bandwidth 98496 MB/sec 28800 MB/sec
Texel Rate 28800 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 192 160
Texture Mapping Units 32 8
Render Output Units 24 4
Bus Type GDDR5 GDDR5
Bus Width 192-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 370 million
Bus PCIe 2.1 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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, 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 most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

GeForce GTX 550 Ti

Radeon HD 6450 (OEM) 1GB

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