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Radeon HD 7750 vs Radeon RX 470 4GB

Intro

The Radeon HD 7750 comes with a core clock speed of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon RX 470 4GB, which uses a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 RAM runs at a speed of 1650 MHz on this specific card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon RX 470 4GB 120 Watts
Difference: 65 Watts (118%)

Memory Bandwidth

In theory, the Radeon RX 470 4GB is 193% quicker than the Radeon HD 7750 in general, due to its greater data rate. (explain)

Radeon RX 470 4GB 211200 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 139200 (193%)

Texel Rate

The Radeon RX 470 4GB is a lot (about 363%) faster with regards to AF than the Radeon HD 7750. (explain)

Radeon RX 470 4GB 118528 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 92928 (363%)

Pixel Rate

The Radeon RX 470 4GB should be quite a bit (about 132%) better at AA than the Radeon HD 7750, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 470 4GB 29632 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 16832 (132%)

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 7750

Amazon.com

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Radeon RX 470 4GB

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 7750 Radeon RX 470 4GB
Manufacturer AMD AMD
Year February 2012 August 2016
Code Name Cape Verde Pro Polaris 10
Memory 1024 MB 4096 MB
Core Speed 800 MHz 926 MHz
Memory Speed 4500 MHz 6600 MHz
Power (Max TDP) 55 watts 120 watts
Bandwidth 72000 MB/sec 211200 MB/sec
Texel Rate 25600 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 512 2048
Texture Mapping Units 32 128
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 1500 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling 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 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 number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 7750

Amazon.com

Check prices at:

Radeon RX 470 4GB

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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