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

Intro

The Radeon HD 5850 comes with a clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It features 1440(288x5) SPUs, 72 TAUs, and 32 Raster Operation Units.

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

(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 will be 344% faster than the Radeon HD 6570 (OEM) 1GB overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon HD 5850 should be quite a bit (about 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 is quite a bit (approximately 346%) more effective at anti-aliasing than the Radeon HD 6570 (OEM) 1GB, and will be capable of handling higher screen resolutions without losing too much performance. (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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 5850

Amazon.com

Other US-based stores

Radeon HD 6570 (OEM) 1GB

Amazon.com

Other US-based stores

Specifications

Model Radeon HD 5850 Radeon HD 6570 (OEM) 1GB
Manufacturer ATi ATi
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 1000 MHz (4000 MHz effective) 900 MHz (1800 MHz effective)
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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 quite a few 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.

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