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Radeon HD 4850 X2 512MB vs Radeon HD 6570 (OEM) 2GB

Intro

The Radeon HD 4850 X2 512MB features a GPU core clock speed of 625 MHz, and the 512 MB of GDDR3 memory runs at 993 MHz through a 256-bit bus. It also is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Compare that to the Radeon HD 6570 (OEM) 2GB, which uses a 40 nm design. AMD has set the core speed at 650 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this particular card. It features 480 SPUs along with 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 4850 X2 512MB 250 Watts
Difference: 200 Watts (400%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4850 X2 512MB should in theory be quite a bit superior to the Radeon HD 6570 (OEM) 2GB in general. (explain)

Radeon HD 4850 X2 512MB 127104 MB/sec
Radeon HD 6570 (OEM) 2GB 64000 MB/sec
Difference: 63104 (99%)

Texel Rate

The Radeon HD 4850 X2 512MB should be much (approximately 221%) better at anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Radeon HD 6570 (OEM) 2GB 15600 Mtexels/sec
Difference: 34400 (221%)

Pixel Rate

The Radeon HD 4850 X2 512MB should be much (approximately 285%) better at anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and also capable of handling higher screen resolutions better. (explain)

Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Radeon HD 6570 (OEM) 2GB 5200 Mpixels/sec
Difference: 14800 (285%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 4850 X2 512MB

Amazon.com

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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 4850 X2 512MB Radeon HD 6570 (OEM) 2GB
Manufacturer AMD AMD
Year Nov 7, 2008 February 2011
Code Name R700 Turks
Memory 512 MB (x2) 1024 MB
Core Speed 625 MHz (x2) 650 MHz
Memory Speed 1986 MHz (x2) 4000 MHz
Power (Max TDP) 250 watts 50 watts
Bandwidth 127104 MB/sec 64000 MB/sec
Texel Rate 50000 Mtexels/sec 15600 Mtexels/sec
Pixel Rate 20000 Mpixels/sec 5200 Mpixels/sec
Unified Shaders 800(160x5) (x2) 480
Texture Mapping Units 40 (x2) 24
Render Output Units 16 (x2) 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 40 nm
Transistors 956 million 715 million
Bus PCIe 2.0 x16 (PCIe bridge) 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 (measured in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses 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 texture map elements (texels) that can be processed in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4850 X2 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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