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Radeon HD 6750 1GB vs Radeon HD 7790

Intro

The Radeon HD 6750 1GB features clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 720 SPUs as well as 36 Texture Address Units and 16 ROPs.

Compare those specs to the Radeon HD 7790, which features a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790 85 Watts
Radeon HD 6750 1GB 86 Watts
Difference: 1 Watts (1%)

Memory Bandwidth

In theory, the Radeon HD 7790 will be 50% quicker than the Radeon HD 6750 1GB overall, due to its greater bandwidth. (explain)

Radeon HD 7790 96000 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 32000 (50%)

Texel Rate

The Radeon HD 7790 should be a lot (about 115%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon HD 7790 56000 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 29900 (115%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7790 is superior to the Radeon HD 6750 1GB, and very much so. (explain)

Radeon HD 7790 16000 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 4400 (38%)

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

Display Prices

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Radeon HD 6750 1GB

Amazon.com

Radeon HD 7790

Amazon.com

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

Display Specifications

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Model Radeon HD 6750 1GB Radeon HD 7790
Manufacturer AMD AMD
Year January 2011 March 2013
Code Name Juniper Pro Bonaire XT
Fab Process 40 nm 28 nm
Bus PCIe x16 PCIe 3.0 x16
Memory 1024 MB 1024 MB
Core Speed 725 MHz 1000 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 4000 MHz 6000 MHz
Unified Shaders 720 896
Texture Mapping Units 36 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.3
Power (Max TDP) 86 watts 85 watts
Shader Model 5.0 5.0
Bandwidth 64000 MB/sec 96000 MB/sec
Texel Rate 26100 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 16000 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

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