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Radeon HD 4550 512MB vs Radeon HD 6670 (OEM)

Intro

The Radeon HD 4550 512MB has a clock speed of 600 MHz and a GDDR3 memory frequency of 800 MHz. It also makes use of a 64-bit memory bus, and makes use of a 55 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

Compare those specs to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this card. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB 25 Watts
Radeon HD 6670 (OEM) 63 Watts
Difference: 38 Watts (152%)

Memory Bandwidth

The Radeon HD 6670 (OEM) should in theory perform quite a bit faster than the Radeon HD 4550 512MB in general. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 51200 (400%)

Texel Rate

The Radeon HD 6670 (OEM) will be a lot (about 300%) better at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon HD 6670 (OEM) 19200 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 14400 (300%)

Pixel Rate

The Radeon HD 6670 (OEM) will be much (approximately 167%) more effective at anti-aliasing than the Radeon HD 4550 512MB, and should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6670 (OEM) 6400 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 4000 (167%)

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 HD 6670 (OEM)

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 4550 512MB Radeon HD 6670 (OEM)
Manufacturer AMD AMD
Year Sep 30, 2008 February 2011
Code Name RV710 Turks
Memory 512 MB 512 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1600 MHz 4000 MHz
Power (Max TDP) 25 watts 63 watts
Bandwidth 12800 MB/sec 64000 MB/sec
Texel Rate 4800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 2400 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 80(16x5) 480
Texture Mapping Units 8 24
Render Output Units 4 8
Bus Type GDDR3 GDDR5
Bus Width 64-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 242 million 715 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4550 512MB

Amazon.com

Check prices at:

Radeon HD 6670 (OEM)

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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