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Radeon HD 6750 vs Radeon HD 6770 1GB

Intro

The Radeon HD 6750 makes use of a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific model. It features 720 SPUs as well as 36 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 6770 1GB, which has a clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It features 800 SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 86 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 22 Watts (26%)

Memory Bandwidth

In theory, the Radeon HD 6770 1GB will be 5% quicker than the Radeon HD 6750 overall, due to its greater bandwidth. (explain)

Radeon HD 6770 1GB 67200 MB/sec
Radeon HD 6750 64000 MB/sec
Difference: 3200 (5%)

Texel Rate

The Radeon HD 6770 1GB will be much (more or less 38%) better at AF than the Radeon HD 6750. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
Radeon HD 6750 26100 Mtexels/sec
Difference: 9900 (38%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 1GB is superior to the Radeon HD 6750, by far. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
Radeon HD 6750 11600 Mpixels/sec
Difference: 2800 (24%)

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 6750

Amazon.com

Check prices at:

Radeon HD 6770 1GB

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 6750 Radeon HD 6770 1GB
Manufacturer AMD AMD
Year January 2011 January 2011
Code Name Juniper Pro Juniper XT
Memory 512 MB 1024 MB
Core Speed 725 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 86 watts 108 watts
Bandwidth 64000 MB/sec 67200 MB/sec
Texel Rate 26100 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 720 800
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 x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock 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 get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 6750

Amazon.com

Check prices at:

Radeon HD 6770 1GB

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

2 Responses to “Radeon HD 6750 vs Radeon HD 6770 1GB”
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I Need to buy a PSU, Help says:

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