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Radeon HD 5870 vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 5870 features a GPU core speed of 850 MHz, and the 1024 MB of GDDR5 RAM runs at 1200 MHz through a 256-bit bus. It also is comprised of 1600(320x5) Stream Processors, 80 Texture Address Units, and 32 ROPs.

Compare all that to the Radeon HD 6570 (OEM) 2GB, which has core speeds of 650 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB 50 Watts
Radeon HD 5870 188 Watts
Difference: 138 Watts (276%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be much faster than the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon HD 5870 153600 MB/sec
Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Difference: 89600 (140%)

Texel Rate

The Radeon HD 5870 is a lot (more or less 336%) faster with regards to anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 5870 68000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 52400 (336%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5870 is a better choice, by a large margin. (explain)

Radeon HD 5870 27200 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 22000 (423%)

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 5870

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 5870 Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year September 23, 2009 February 2011
Code Name Cypress XT Turks
Memory 1024 MB 1024 MB
Core Speed 850 MHz 650 MHz
Memory Speed 4800 MHz 4000 MHz
Power (Max TDP) 188 watts 50 watts
Bandwidth 153600 MB/sec 64000 MB/sec
Texel Rate 68000 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 1600(320x5) 480
Texture Mapping Units 80 24
Render Output Units 32 8
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 2154 million 715 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 5870

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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