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Radeon HD 6570 (OEM) 1GB vs Radeon HD 6670 (OEM) 1GB


Intro

The Radeon HD 6570 (OEM) 1GB features a GPU core speed of 650 MHz, and the 1024 MB of GDDR3 RAM runs at 900 MHz through a 128-bit bus. It also is comprised of 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

Compare all of that to the Radeon HD 6670 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this card. It features 480 SPUs as well as 24 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB 50 Watts
Radeon HD 6670 (OEM) 1GB 63 Watts
Difference: 13 Watts (26%)

Memory Bandwidth

Performance-wise, the Radeon HD 6670 (OEM) 1GB should in theory be quite a bit better than the Radeon HD 6570 (OEM) 1GB overall. (explain)

Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Radeon HD 6570 (OEM) 1GB 28800 MB/sec
Difference: 35200 (122%)

Texel Rate

The Radeon HD 6670 (OEM) 1GB will be much (approximately 23%) more effective at anisotropic filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
Difference: 3600 (23%)

Pixel Rate

The Radeon HD 6670 (OEM) 1GB should be a lot (more or less 23%) faster with regards to AA than the Radeon HD 6570 (OEM) 1GB, and able to handle higher resolutions while still performing well. (explain)

Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Radeon HD 6570 (OEM) 1GB 5200 Mpixels/sec
Difference: 1200 (23%)

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

Radeon HD 6570 (OEM) 1GB

Radeon HD 6670 (OEM) 1GB

Specifications

Display Specifications

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Model Radeon HD 6570 (OEM) 1GB Radeon HD 6670 (OEM) 1GB
Manufacturer AMD AMD
Year February 2011 February 2011
Code Name Turks Turks
Memory 1024 MB 1024 MB
Core Speed 650 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 50 watts 63 watts
Bandwidth 28800 MB/sec 64000 MB/sec
Texel Rate 15600 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 480 480
Texture Mapping Units 24 24
Render Output Units 8 8
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 715 million 715 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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a 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. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Radeon HD 6570 (OEM) 1GB

Radeon HD 6670 (OEM) 1GB

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