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Radeon HD 7870 XT vs Radeon RX 480 4GB

Intro

The Radeon HD 7870 XT has a GPU core clock speed of 925 MHz, and the 2048 MB of GDDR5 RAM runs at 1500 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 96 TAUs, and 32 ROPs.

Compare those specs to the Radeon RX 480 4GB, which has a core clock speed of 1120 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 256-bit memory bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

Ethereum Mining Hash Rate

Radeon RX 480 4GB 25 Mh/s
Radeon HD 7870 XT 15 Mh/s
Difference: 10 (67%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB 150 Watts
Radeon HD 7870 XT 185 Watts
Difference: 35 Watts (23%)

Memory Bandwidth

The Radeon RX 480 4GB should theoretically be a little bit faster than the Radeon HD 7870 XT in general. (explain)

Radeon RX 480 4GB 229376 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 37376 (19%)

Texel Rate

The Radeon RX 480 4GB is a lot (more or less 82%) better at anisotropic filtering than the Radeon HD 7870 XT. (explain)

Radeon RX 480 4GB 161280 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 72480 (82%)

Pixel Rate

The Radeon RX 480 4GB is much (approximately 21%) faster with regards to FSAA than the Radeon HD 7870 XT, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 480 4GB 35840 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 6240 (21%)

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 7870 XT

Amazon.com

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Radeon RX 480 4GB

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 7870 XT Radeon RX 480 4GB
Manufacturer AMD AMD
Year November 2012 June 2016
Code Name Tahiti LE Polaris 10
Memory 2048 MB 4096 MB
Core Speed 925 MHz 1120 MHz
Memory Speed 6000 MHz 7000 MHz
Power (Max TDP) 185 watts 150 watts
Bandwidth 192000 MB/sec 229376 MB/sec
Texel Rate 88800 Mtexels/sec 161280 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 35840 Mpixels/sec
Unified Shaders 1536 2304
Texture Mapping Units 96 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video 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 amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 7870 XT

Amazon.com

Check prices at:

Radeon RX 480 4GB

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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