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Radeon HD 3850 1GB vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 3850 1GB features clock speeds of 668 MHz on the GPU, and 828 MHz on the 1024 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 6570 (OEM) 2GB, which features GPU core speed of 650 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also is comprised of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 3850 1GB 75 Watts
Difference: 25 Watts (50%)

Memory Bandwidth

Performance-wise, the Radeon HD 6570 (OEM) 2GB should theoretically be much superior to the Radeon HD 3850 1GB overall. (explain)

Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 11008 (21%)

Texel Rate

The Radeon HD 6570 (OEM) 2GB will be much (more or less 46%) more effective at texture filtering than the Radeon HD 3850 1GB. (explain)

Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 4912 (46%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 3850 1GB is a better choice, by a large margin. (explain)

Radeon HD 3850 1GB 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 1GB

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 1GB Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year Nov 19, 2007 February 2011
Code Name RV670 PRO Turks
Memory 1024 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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, 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 worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock 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 is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 3850 1GB

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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