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Radeon HD 5750 512MB vs Radeon HD 7870 XT

Intro

The Radeon HD 5750 512MB features a GPU clock speed of 700 MHz, and the 512 MB of GDDR5 memory runs at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Compare all of that to the Radeon HD 7870 XT, which has a core clock speed of 925 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1536 SPUs, 96 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB 86 Watts
Radeon HD 7870 XT 185 Watts
Difference: 99 Watts (115%)

Memory Bandwidth

The Radeon HD 7870 XT should in theory be a lot faster than the Radeon HD 5750 512MB overall. (explain)

Radeon HD 7870 XT 192000 MB/sec
Radeon HD 5750 512MB 73600 MB/sec
Difference: 118400 (161%)

Texel Rate

The Radeon HD 7870 XT should be much (approximately 252%) better at anisotropic filtering than the Radeon HD 5750 512MB. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
Radeon HD 5750 512MB 25200 Mtexels/sec
Difference: 63600 (252%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7870 XT is superior to the Radeon HD 5750 512MB, by a large margin. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
Radeon HD 5750 512MB 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 512MB

Amazon.com

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Radeon HD 7870 XT

Amazon.com

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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 512MB Radeon HD 7870 XT
Manufacturer AMD AMD
Year October 13, 2009 November 2012
Code Name Juniper LE Tahiti LE
Memory 512 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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 5750 512MB

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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