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Radeon HD 4350 vs Radeon HD 4550 512MB

Intro

The Radeon HD 4350 comes with a GPU core clock speed of 575 MHz, and the 512 MB of DDR2 RAM runs at 500 MHz through a 64-bit bus. It also is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

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

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350 22 Watts
Radeon HD 4550 512MB 25 Watts
Difference: 3 Watts (14%)

Memory Bandwidth

In theory, the Radeon HD 4550 512MB should be 60% faster than the Radeon HD 4350 in general, because of its higher bandwidth. (explain)

Radeon HD 4550 512MB 12800 MB/sec
Radeon HD 4350 8000 MB/sec
Difference: 4800 (60%)

Texel Rate

The Radeon HD 4550 512MB will be a little bit (more or less 4%) more effective at texture filtering than the Radeon HD 4350. (explain)

Radeon HD 4550 512MB 4800 Mtexels/sec
Radeon HD 4350 4600 Mtexels/sec
Difference: 200 (4%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 4550 512MB is superior to the Radeon HD 4350, though not by far. (explain)

Radeon HD 4550 512MB 2400 Mpixels/sec
Radeon HD 4350 2300 Mpixels/sec
Difference: 100 (4%)

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 4350

Amazon.com

Check prices at:

Radeon HD 4550 512MB

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 4350 Radeon HD 4550 512MB
Manufacturer AMD AMD
Year Sep 30, 2008 Sep 30, 2008
Code Name RV710 RV710
Memory 512 MB 512 MB
Core Speed 575 MHz 600 MHz
Memory Speed 1000 MHz 1600 MHz
Power (Max TDP) 22 watts 25 watts
Bandwidth 8000 MB/sec 12800 MB/sec
Texel Rate 4600 Mtexels/sec 4800 Mtexels/sec
Pixel Rate 2300 Mpixels/sec 2400 Mpixels/sec
Unified Shaders 80(16x5) 80(16x5)
Texture Mapping Units 8 8
Render Output Units 4 4
Bus Type DDR2 GDDR3
Bus Width 64-bit 64-bit
Fab Process 55 nm 55 nm
Transistors 242 million 242 million
Bus PCIe 2.0 x16, PCI PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4350

Amazon.com

Check prices at:

Radeon HD 4550 512MB

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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