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Radeon HD 4550 512MB vs Radeon R9 390 8G

Intro

The Radeon HD 4550 512MB features a GPU core clock speed of 600 MHz, and the 512 MB of GDDR3 RAM runs at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

Compare those specifications to the Radeon R9 390 8G, which comes with GPU clock speed of 1000 MHz, and 8192 MB of GDDR5 RAM set to run at 1500 MHz through a 512-bit bus. It also is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB 25 Watts
Radeon R9 390 8G 275 Watts
Difference: 250 Watts (1000%)

Memory Bandwidth

Performance-wise, the Radeon R9 390 8G should in theory be quite a bit superior to the Radeon HD 4550 512MB overall. (explain)

Radeon R9 390 8G 384000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 371200 (2900%)

Texel Rate

The Radeon R9 390 8G should be quite a bit (more or less 3233%) better at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon R9 390 8G 160000 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 155200 (3233%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390 8G is the winner, by far. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 61600 (2567%)

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 4550 512MB

Amazon.com

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Radeon R9 390 8G

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 4550 512MB Radeon R9 390 8G
Manufacturer AMD AMD
Year Sep 30, 2008 June 2015
Code Name RV710 Grenada PRO
Memory 512 MB 8192 MB
Core Speed 600 MHz 1000 MHz
Memory Speed 1600 MHz 6000 MHz
Power (Max TDP) 25 watts 275 watts
Bandwidth 12800 MB/sec 384000 MB/sec
Texel Rate 4800 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 2400 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 80(16x5) 2560
Texture Mapping Units 8 160
Render Output Units 4 64
Bus Type GDDR3 GDDR5
Bus Width 64-bit 512-bit
Fab Process 55 nm 28 nm
Transistors 242 million 6200 million
Bus PCIe 2.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 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. It is worked out by multiplying the card's interface width by its memory speed. 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 bandwidth is, the faster 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 per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling 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 graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon HD 4550 512MB

Amazon.com

Check prices at:

Radeon R9 390 8G

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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