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GeForce GTX 550 Ti vs Radeon HD 6670 (OEM)

Intro

The GeForce GTX 550 Ti has 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 made up of 192 SPUs, 32 TAUs, and 24 Raster Operation Units.

Compare those specs to the Radeon HD 6670 (OEM), which comes with a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 53 Watts (84%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti will be 54% quicker than the Radeon HD 6670 (OEM) in general, because of its greater data rate. (explain)

GeForce GTX 550 Ti 98496 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 34496 (54%)

Texel Rate

The GeForce GTX 550 Ti will be a lot (approximately 50%) faster with regards to anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

GeForce GTX 550 Ti 28800 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 9600 (50%)

Pixel Rate

The GeForce GTX 550 Ti will be a lot (approximately 238%) more effective at FSAA than the Radeon HD 6670 (OEM), and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 15200 (238%)

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

Amazon.com

Radeon HD 6670 (OEM)

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

Model GeForce GTX 550 Ti Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year March 2011 February 2011
Code Name GF116 Turks
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 512 MB
Core Speed 900 MHz 800 MHz
Shader Speed 1800 MHz (N/A) MHz
Memory Speed 1026 MHz (4104 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 192 480
Texture Mapping Units 32 24
Render Output Units 24 8
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 116 watts 63 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 64000 MB/sec
Texel Rate 28800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 6400 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is worked out 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 it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at 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 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 the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

2 Responses to “GeForce GTX 550 Ti vs Radeon HD 6670 (OEM)”
Gamble says:
OFC. Nvidia 550 Ti... but an additional 40-50 $ expense for a good smps to provide it with the required power. Where as Raedon would run smooth with you regular smps
henrique dos reis lima says:
creio eu maior coisa dai é dinheiro eu fico com hd 6770 ela está 250 R$ ela é boa ai gtx 550ti 370 R$ 120 R$ de difrença pra quem que roda no full com hd 6670 da pra roda de boa recomendo hd 6670 ela boa pode ter certeza

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