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

Intro

The GeForce GTX 550 Ti comes with a GPU clock speed of 900 MHz, and the 1024 MB of GDDR5 memory runs at 1026 MHz through a 192-bit bus. It also is comprised of 192 SPUs, 32 Texture Address Units, and 24 Raster Operation Units.

Compare all of that to the Radeon HD 6450 (OEM) 1GB, which features a clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 64-bit memory bus, and uses a 40 nm design. It is comprised of 160 SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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(No game benchmarks for this combination yet.)

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

Theoretically speaking, the GeForce GTX 550 Ti will be 242% quicker than the Radeon HD 6450 (OEM) 1GB in general, because of its greater data rate. (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 will be a lot (about 380%) better at anisotropic filtering 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

If using a high resolution is important to you, then the GeForce GTX 550 Ti is a better choice, by a large margin. (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

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GeForce GTX 550 Ti

Amazon.com

Radeon HD 6450 (OEM) 1GB

Amazon.com

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 GTX 550 Ti Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia AMD
Year March 2011 February 2011
Code Name GF116 Caicos
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 900 MHz 750 MHz
Shader Speed 1800 MHz (N/A) MHz
Memory Speed 4104 MHz 3600 MHz
Unified Shaders 192 160
Texture Mapping Units 32 8
Render Output Units 24 4
Bus Type GDDR5 GDDR5
Bus Width 192-bit 64-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 116 watts 31 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 28800 MB/sec
Texel Rate 28800 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 3000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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