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Radeon HD 5750 1GB vs Radeon HD 7850

Intro

The Radeon HD 5750 1GB has a GPU clock speed of 700 MHz, and the 1024 MB of GDDR5 memory runs at 1150 MHz through a 128-bit bus. It also is made up of 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 7850, which features clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB 86 Watts
Radeon HD 7850 130 Watts
Difference: 44 Watts (51%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7850 should in theory be a lot superior to the Radeon HD 5750 1GB overall. (explain)

Radeon HD 7850 153600 MB/sec
Radeon HD 5750 1GB 73600 MB/sec
Difference: 80000 (109%)

Texel Rate

The Radeon HD 7850 is quite a bit (more or less 118%) more effective at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

Radeon HD 7850 55040 Mtexels/sec
Radeon HD 5750 1GB 25200 Mtexels/sec
Difference: 29840 (118%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7850 is a better choice, by far. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon HD 5750 1GB 11200 Mpixels/sec
Difference: 16320 (146%)

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 5750 1GB

Amazon.com

Check prices at:

Radeon HD 7850

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 5750 1GB Radeon HD 7850
Manufacturer AMD AMD
Year October 13, 2009 March 2012
Code Name Juniper LE Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 700 MHz 860 MHz
Memory Speed 4600 MHz 4800 MHz
Power (Max TDP) 86 watts 130 watts
Bandwidth 73600 MB/sec 153600 MB/sec
Texel Rate 25200 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 11200 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 720(144x5) 1024
Texture Mapping Units 36 64
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 1040 million 2800 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 5750 1GB

Amazon.com

Check prices at:

Radeon HD 7850

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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