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Radeon HD 5750 1GB vs Radeon HD 7870 XT

Intro

The Radeon HD 5750 1GB comes with a clock frequency of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is comprised of 720(144x5) SPUs, 36 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon HD 7870 XT, which comes with a GPU core clock speed of 925 MHz, and 2048 MB of GDDR5 RAM set to run at 1500 MHz through a 256-bit bus. It also is made up of 1536 Stream Processors, 96 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB 86 Watts
Radeon HD 7870 XT 185 Watts
Difference: 99 Watts (115%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should in theory be much superior to the Radeon HD 5750 1GB in general. (explain)

Radeon HD 7870 XT 192000 MB/sec
Radeon HD 5750 1GB 73600 MB/sec
Difference: 118400 (161%)

Texel Rate

The Radeon HD 7870 XT will be quite a bit (more or less 252%) faster with regards to texture filtering than the Radeon HD 5750 1GB. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
Radeon HD 5750 1GB 25200 Mtexels/sec
Difference: 63600 (252%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7870 XT is the winner, by a large margin. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
Radeon HD 5750 1GB 11200 Mpixels/sec
Difference: 18400 (164%)

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 7870 XT

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 7870 XT
Manufacturer AMD AMD
Year October 13, 2009 November 2012
Code Name Juniper LE Tahiti LE
Memory 1024 MB 2048 MB
Core Speed 700 MHz 925 MHz
Memory Speed 4600 MHz 6000 MHz
Power (Max TDP) 86 watts 185 watts
Bandwidth 73600 MB/sec 192000 MB/sec
Texel Rate 25200 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 11200 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 720(144x5) 1536
Texture Mapping Units 36 96
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 40 nm 28 nm
Transistors 1040 million 4313 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 3.2 OpenGL 4.3

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 5750 1GB

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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