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Radeon HD 5750 512MB vs Radeon HD 5770

Intro

The Radeon HD 5750 512MB features a clock speed of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It features 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon HD 5770, which uses a 40 nm design. AMD has set the core speed at 850 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB 86 Watts
Radeon HD 5770 108 Watts
Difference: 22 Watts (26%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5770 should theoretically be a bit superior to the Radeon HD 5750 512MB in general. (explain)

Radeon HD 5770 76800 MB/sec
Radeon HD 5750 512MB 73600 MB/sec
Difference: 3200 (4%)

Texel Rate

The Radeon HD 5770 will be much (approximately 35%) faster with regards to AF than the Radeon HD 5750 512MB. (explain)

Radeon HD 5770 34000 Mtexels/sec
Radeon HD 5750 512MB 25200 Mtexels/sec
Difference: 8800 (35%)

Pixel Rate

The Radeon HD 5770 should be much (more or less 21%) more effective at FSAA than the Radeon HD 5750 512MB, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5770 13600 Mpixels/sec
Radeon HD 5750 512MB 11200 Mpixels/sec
Difference: 2400 (21%)

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 5750 512MB

Amazon.com

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Radeon HD 5770

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 5750 512MB Radeon HD 5770
Manufacturer AMD AMD
Year October 13, 2009 October 13, 2009
Code Name Juniper LE Juniper XT
Memory 512 MB 1024 MB
Core Speed 700 MHz 850 MHz
Memory Speed 4600 MHz 4800 MHz
Power (Max TDP) 86 watts 108 watts
Bandwidth 73600 MB/sec 76800 MB/sec
Texel Rate 25200 Mtexels/sec 34000 Mtexels/sec
Pixel Rate 11200 Mpixels/sec 13600 Mpixels/sec
Unified Shaders 720(144x5) 800(160x5)
Texture Mapping Units 36 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1040 million 1040 million
Bus PCIe 2.1 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon HD 5750 512MB

Amazon.com

Check prices at:

Radeon HD 5770

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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