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Radeon HD 5850 vs Radeon HD 6570 (OEM) 1GB

Intro

The Radeon HD 5850 comes with a GPU clock speed of 725 MHz, and the 1024 MB of GDDR5 memory is set to run at 1000 MHz through a 256-bit bus. It also is made up of 1440(288x5) Stream Processors, 72 Texture Address Units, and 32 ROPs.

Compare that to the Radeon HD 6570 (OEM) 1GB, which has a core clock speed of 650 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB 50 Watts
Radeon HD 5850 151 Watts
Difference: 101 Watts (202%)

Memory Bandwidth

In theory, the Radeon HD 5850 should be quite a bit faster than the Radeon HD 6570 (OEM) 1GB overall. (explain)

Radeon HD 5850 128000 MB/sec
Radeon HD 6570 (OEM) 1GB 28800 MB/sec
Difference: 99200 (344%)

Texel Rate

The Radeon HD 5850 will be a lot (approximately 235%) more effective at AF than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 5850 52200 Mtexels/sec
Radeon HD 6570 (OEM) 1GB 15600 Mtexels/sec
Difference: 36600 (235%)

Pixel Rate

The Radeon HD 5850 will be quite a bit (about 346%) more effective at anti-aliasing than the Radeon HD 6570 (OEM) 1GB, and also capable of handling higher resolutions better. (explain)

Radeon HD 5850 23200 Mpixels/sec
Radeon HD 6570 (OEM) 1GB 5200 Mpixels/sec
Difference: 18000 (346%)

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 5850

Amazon.com

Radeon HD 6570 (OEM) 1GB

Amazon.com

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 5850 Radeon HD 6570 (OEM) 1GB
Manufacturer AMD AMD
Year September 30, 2009 February 2011
Code Name Cypress PRO Turks
Fab Process 40 nm 40 nm
Bus PCIe 2.1 x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 725 MHz 650 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 4000 MHz 1800 MHz
Unified Shaders 1440(288x5) 480
Texture Mapping Units 72 24
Render Output Units 32 8
Bus Type GDDR5 GDDR3
Bus Width 256-bit 128-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1
Power (Max TDP) 151 watts 50 watts
Shader Model 5.0 5.0
Bandwidth 128000 MB/sec 28800 MB/sec
Texel Rate 52200 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 23200 Mpixels/sec 5200 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at 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 the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

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