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Radeon HD 7870 vs Radeon R7 240

Intro

The Radeon HD 7870 uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory works at a speed of 1200 MHz on this card. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Compare all of that to the Radeon R7 240, which has a GPU core clock speed of 730 MHz, and 2048 MB of DDR3 RAM running at 900 MHz through a 128-bit bus. It also is made up of 320 Stream Processors, 20 Texture Address Units, and 8 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.

3DMark Fire Strike Graphics Score

Radeon HD 7870 6230 points
Radeon R7 240 1218 points
Difference: 5012 (411%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240 30 Watts
Radeon HD 7870 175 Watts
Difference: 145 Watts (483%)

Memory Bandwidth

The Radeon HD 7870 should theoretically perform much faster than the Radeon R7 240 in general. (explain)

Radeon HD 7870 153600 MB/sec
Radeon R7 240 28800 MB/sec
Difference: 124800 (433%)

Texel Rate

The Radeon HD 7870 should be much (approximately 448%) more effective at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 7870 80000 Mtexels/sec
Radeon R7 240 14600 Mtexels/sec
Difference: 65400 (448%)

Pixel Rate

The Radeon HD 7870 will be quite a bit (more or less 448%) more effective at anti-aliasing than the Radeon R7 240, and also capable of handling higher resolutions more effectively. (explain)

Radeon HD 7870 32000 Mpixels/sec
Radeon R7 240 5840 Mpixels/sec
Difference: 26160 (448%)

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

Amazon.com

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Radeon R7 240

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 7870 Radeon R7 240
Manufacturer AMD AMD
Year March 2012 October 2013
Code Name Pitcairn XT Oland PRO
Memory 2048 MB 2048 MB
Core Speed 1000 MHz 730 MHz
Memory Speed 4800 MHz 1800 MHz
Power (Max TDP) 175 watts 30 watts
Bandwidth 153600 MB/sec 28800 MB/sec
Texel Rate 80000 Mtexels/sec 14600 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 5840 Mpixels/sec
Unified Shaders 1280 320
Texture Mapping Units 80 20
Render Output Units 32 8
Bus Type GDDR5 DDR3
Bus Width 256-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 1040 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 11.2
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 7870

Amazon.com

Check prices at:

Radeon R7 240

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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