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Radeon HD 5570 vs Radeon HD 7750

Intro

The Radeon HD 5570 features clock speeds of 650 MHz on the GPU, and 900 MHz on the 512 MB of DDR3 memory. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Compare all of that to the Radeon HD 7750, which makes use of a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory works at a frequency of 1125 MHz on this specific card. It features 512 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570 43 Watts
Radeon HD 7750 55 Watts
Difference: 12 Watts (28%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should theoretically be quite a bit better than the Radeon HD 5570 in general. (explain)

Radeon HD 7750 72000 MB/sec
Radeon HD 5570 28800 MB/sec
Difference: 43200 (150%)

Texel Rate

The Radeon HD 7750 is much (more or less 97%) more effective at texture filtering than the Radeon HD 5570. (explain)

Radeon HD 7750 25600 Mtexels/sec
Radeon HD 5570 13000 Mtexels/sec
Difference: 12600 (97%)

Pixel Rate

The Radeon HD 7750 will be a lot (about 146%) more effective at AA than the Radeon HD 5570, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 7750 12800 Mpixels/sec
Radeon HD 5570 5200 Mpixels/sec
Difference: 7600 (146%)

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 5570

Amazon.com

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Radeon HD 7750

Amazon.com

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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 5570 Radeon HD 7750
Manufacturer AMD AMD
Year February 9, 2010 February 2012
Code Name Redwood PRO Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 650 MHz 800 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 43 watts 55 watts
Bandwidth 28800 MB/sec 72000 MB/sec
Texel Rate 13000 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 5200 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 400(80x5) 512
Texture Mapping Units 20 32
Render Output Units 8 16
Bus Type DDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 627 million 1500 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video 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 can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 5570

Amazon.com

Check prices at:

Radeon HD 7750

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.

Comments

One Response to “Radeon HD 5570 vs Radeon HD 7750”
Caramac says:

Plenty of ATI Radeon HD 7750 1GB graphics cards are just ancient DDR3.

Buyer beware, many versions released.

Powercolor has (10) versions listed.
(6) with GDDR5 and (4) with DDR3.
Just some of them:
Low Profile (4)DP - 2GB GDDR5
Full DVI/HDMI/DP -1GB GDDR5

Full DVI/HDMI/VGA -2GB DDR3
Full DVI/HDMI/VGA -1GB DDR3

DDR3 - memory clocked 800
GDDR5 - memory clocked 1125

Each DDR3 card is either "UEFI READY" or is not, leading to the four.

That is just Powercolor alone!

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