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

Intro

The Radeon HD 5850 uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this particular card. It features 1440(288x5) SPUs as well as 72 TAUs and 32 Rasterization Operator Units.

Compare all of that to the Radeon HD 6570 (OEM) 1GB, which features a core clock speed of 650 MHz and a GDDR3 memory frequency of 900 MHz. It also features 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.

(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

The Radeon HD 5850 should in theory 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 much (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 should be a lot (more or less 346%) faster with regards to anti-aliasing than the Radeon HD 6570 (OEM) 1GB, and should be capable of handling higher screen resolutions while still performing well. (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

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

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 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: Bandwidth is the largest amount of information (in units of MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units 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 maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 bandwidth is, the lower the ability to get to the max fill rate.

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