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Radeon HD 3850 512MB vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 3850 512MB has a clock frequency of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also features a 256-bit bus, and uses a 55 nm design. It features 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Compare all that to the Radeon HD 6570 (OEM) 2GB, which features a clock speed of 650 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It features 480 SPUs, 24 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 3850 512MB 75 Watts
Difference: 25 Watts (50%)

Memory Bandwidth

Performance-wise, the Radeon HD 6570 (OEM) 2GB should theoretically be quite a bit better than the Radeon HD 3850 512MB overall. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Radeon HD 3850 512MB 52992 MB/sec
Difference: 11008 (21%)

Texel Rate

The Radeon HD 6570 (OEM) 2GB is a lot (about 46%) more effective at anisotropic filtering than the Radeon HD 3850 512MB. (explain)

Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Radeon HD 3850 512MB 10688 Mtexels/sec
Difference: 4912 (46%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3850 512MB is the winner, by a large margin. (explain)

Radeon HD 3850 512MB 10688 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 5488 (106%)

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 3850 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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 3850 512MB Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year Nov 19, 2007 February 2011
Code Name RV670 PRO Turks
Memory 512 MB 1024 MB
Core Speed 668 MHz 650 MHz
Memory Speed 1656 MHz 4000 MHz
Power (Max TDP) 75 watts 50 watts
Bandwidth 52992 MB/sec 64000 MB/sec
Texel Rate 10688 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 320(64x5) 480
Texture Mapping Units 16 24
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 715 million
Bus PCIe 2.0 x16/AGP 8x PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 applied per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 3850 512MB

Amazon.com

Check prices at:

Radeon HD 6570 (OEM) 2GB

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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