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GeForce GTS 450 vs Radeon HD 6670 (OEM)

Intro

The GeForce GTS 450 comes with a GPU clock speed of 783 MHz, and the 512 MB of GDDR5 memory runs at 902 MHz through a 128-bit bus. It also features 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon HD 6670 (OEM), which has core clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 480 SPUs as well as 24 Texture Address Units and 8 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTS 450 1453 points
Radeon HD 6670 (OEM) 1120 points
Difference: 333 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
GeForce GTS 450 106 Watts
Difference: 43 Watts (68%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6670 (OEM) should theoretically be a bit better than the GeForce GTS 450 overall. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 6272 (11%)

Texel Rate

The GeForce GTS 450 should be much (more or less 31%) faster with regards to texture filtering than the Radeon HD 6670 (OEM). (explain)

GeForce GTS 450 25056 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 5856 (31%)

Pixel Rate

The GeForce GTS 450 should be much (about 96%) more effective at full screen anti-aliasing than the Radeon HD 6670 (OEM), and also able to handle higher screen resolutions better. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 6128 (96%)

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 GTS 450

Amazon.com

Check prices at:

Radeon HD 6670 (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 GTS 450 Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year September 2010 February 2011
Code Name GF106 Turks
Memory 512 MB 512 MB
Core Speed 783 MHz 800 MHz
Memory Speed 3608 MHz 4000 MHz
Power (Max TDP) 106 watts 63 watts
Bandwidth 57728 MB/sec 64000 MB/sec
Texel Rate 25056 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 192 480
Texture Mapping Units 32 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 715 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 max amount of information (measured in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTS 450

Amazon.com

Check prices at:

Radeon HD 6670 (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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