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Radeon HD 6750 1GB vs Radeon RX 550

Intro

The Radeon HD 6750 1GB comes with a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is made up of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

Compare all of that to the Radeon RX 550, which makes use of a 14 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 RAM is set to run at a frequency of 1750 MHz on this particular card. It features 512 SPUs along with 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon HD 6750 1GB 86 Watts
Difference: 36 Watts (72%)

Memory Bandwidth

Performance-wise, the Radeon RX 550 should in theory be much superior to the Radeon HD 6750 1GB overall. (explain)

Radeon RX 550 114688 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 50688 (79%)

Texel Rate

The Radeon RX 550 will be much (about 35%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon RX 550 35200 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 9100 (35%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 550 is the winner, by far. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 6000 (52%)

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 1GB

Amazon.com

Check prices at:

Radeon RX 550

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 1GB Radeon RX 550
Manufacturer AMD AMD
Year January 2011 April 2017
Code Name Juniper Pro Polaris 12
Memory 1024 MB 2048 MB
Core Speed 725 MHz 1100 MHz
Memory Speed 4000 MHz 7000 MHz
Power (Max TDP) 86 watts 50 watts
Bandwidth 64000 MB/sec 114688 MB/sec
Texel Rate 26100 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 720 512
Texture Mapping Units 36 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 14 nm
Transistors 1040 million 2200 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 6750 1GB

Amazon.com

Check prices at:

Radeon RX 550

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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