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Radeon HD 6570 (OEM) 2GB vs Radeon HD 6770

Intro

The Radeon HD 6570 (OEM) 2GB has a GPU core clock speed of 650 MHz, and the 1024 MB of GDDR5 RAM runs at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 6770, which comes with a GPU core clock speed of 900 MHz, and 512 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also features 800 SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 6770 108 Watts
Difference: 58 Watts (116%)

Memory Bandwidth

Theoretically, the Radeon HD 6770 should perform just a bit faster than the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon HD 6770 67200 MB/sec
Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Difference: 3200 (5%)

Texel Rate

The Radeon HD 6770 is a lot (about 131%) better at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 6770 36000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 20400 (131%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 is a better choice, by a large margin. (explain)

Radeon HD 6770 14400 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 9200 (177%)

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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Radeon HD 6570 (OEM) 2GB

Amazon.com

Check prices at:

Radeon HD 6770

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 Radeon HD 6570 (OEM) 2GB Radeon HD 6770
Manufacturer AMD AMD
Year February 2011 January 2011
Code Name Turks Juniper XT
Memory 1024 MB 512 MB
Core Speed 650 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 50 watts 108 watts
Bandwidth 64000 MB/sec 67200 MB/sec
Texel Rate 15600 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 480 800
Texture Mapping Units 24 40
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 715 million 1040 million
Bus PCIe 2.1 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are applied in one second. This is worked out 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 6570 (OEM) 2GB

Amazon.com

Check prices at:

Radeon HD 6770

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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