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Radeon HD 4550 256MB vs Radeon R7 250

Intro

The Radeon HD 4550 256MB has core speeds of 600 MHz on the GPU, and 800 MHz on the 256 MB of DDR3 RAM. It features 80(16x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Compare all of that to the Radeon R7 250, which comes with a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1150 MHz through a 128-bit bus. It also features 384 SPUs, 24 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB 25 Watts
Radeon R7 250 65 Watts
Difference: 40 Watts (160%)

Memory Bandwidth

Theoretically, the Radeon R7 250 should be quite a bit faster than the Radeon HD 4550 256MB in general. (explain)

Radeon R7 250 73600 MB/sec
Radeon HD 4550 256MB 12800 MB/sec
Difference: 60800 (475%)

Texel Rate

The Radeon R7 250 is a lot (approximately 400%) more effective at anisotropic filtering than the Radeon HD 4550 256MB. (explain)

Radeon R7 250 24000 Mtexels/sec
Radeon HD 4550 256MB 4800 Mtexels/sec
Difference: 19200 (400%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R7 250 is the winner, and very much so. (explain)

Radeon R7 250 8000 Mpixels/sec
Radeon HD 4550 256MB 2400 Mpixels/sec
Difference: 5600 (233%)

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 256MB

Amazon.com

Check prices at:

Radeon R7 250

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 256MB Radeon R7 250
Manufacturer AMD AMD
Year Sep 30, 2008 October 2013
Code Name RV710 Oland XT
Memory 256 MB 1024 MB
Core Speed 600 MHz 1000 MHz
Memory Speed 1600 MHz 4600 MHz
Power (Max TDP) 25 watts 65 watts
Bandwidth 12800 MB/sec 73600 MB/sec
Texel Rate 4800 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 2400 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 80(16x5) 384
Texture Mapping Units 8 24
Render Output Units 4 8
Bus Type DDR3 GDDR5
Bus Width 64-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 242 million 1040 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per 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 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 bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4550 256MB

Amazon.com

Check prices at:

Radeon R7 250

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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