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Radeon HD 5750 1GB vs Radeon HD 6770

Intro

The Radeon HD 5750 1GB comes with a GPU core clock speed of 700 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1150 MHz through a 128-bit bus. It also features 720(144x5) Stream Processors, 36 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 6770, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB 86 Watts
Radeon HD 6770 108 Watts
Difference: 22 Watts (26%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB should perform just a bit faster than the Radeon HD 6770 overall. (explain)

Radeon HD 5750 1GB 73600 MB/sec
Radeon HD 6770 67200 MB/sec
Difference: 6400 (10%)

Texel Rate

The Radeon HD 6770 should be quite a bit (about 43%) more effective at texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon HD 6770 36000 Mtexels/sec
Radeon HD 5750 1GB 25200 Mtexels/sec
Difference: 10800 (43%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6770 is superior to the Radeon HD 5750 1GB, and very much so. (explain)

Radeon HD 6770 14400 Mpixels/sec
Radeon HD 5750 1GB 11200 Mpixels/sec
Difference: 3200 (29%)

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 1GB

Amazon.com

Check prices at:

Radeon HD 6770

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 5750 1GB Radeon HD 6770
Manufacturer AMD AMD
Year October 13, 2009 January 2011
Code Name Juniper LE Juniper XT
Memory 1024 MB 512 MB
Core Speed 700 MHz 900 MHz
Memory Speed 4600 MHz 4200 MHz
Power (Max TDP) 86 watts 108 watts
Bandwidth 73600 MB/sec 67200 MB/sec
Texel Rate 25200 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 11200 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 720(144x5) 800
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 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 3.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 5750 1GB

Amazon.com

Check prices at:

Radeon HD 6770

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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