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Radeon HD 5750 1GB vs Radeon HD 7850

Intro

The Radeon HD 5750 1GB comes with a GPU core clock speed of 700 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) Stream Processors, 36 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 7850, which features core clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs as well as 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

Performance-wise, the Radeon HD 7850 should in theory be much better than the Radeon HD 5750 1GB in general. (explain)

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

Texel Rate

The Radeon HD 7850 is much (about 118%) better at AF 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

The Radeon HD 7850 will be much (approximately 146%) more effective at anti-aliasing than the Radeon HD 5750 1GB, and also should be able to handle higher resolutions while still performing well. (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: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once 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 AA, 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 is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max 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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