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Radeon HD 7850 vs Radeon R9 270

Intro

The Radeon HD 7850 uses a 28 nm design. AMD has set the core speed at 860 MHz. The GDDR5 memory works at a frequency of 1200 MHz on this card. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon R9 270, which has core clock speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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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 R9 270 5943 points
Radeon HD 7850 5200 points
Difference: 743 (14%)

Ethereum Mining Hash Rate

Radeon R9 270 15 Mh/s
Radeon HD 7850 13 Mh/s
Difference: 2 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon R9 270 150 Watts
Difference: 20 Watts (15%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270 should theoretically be a bit superior to the Radeon HD 7850 overall. (explain)

Radeon R9 270 179200 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 25600 (17%)

Texel Rate

The Radeon R9 270 should be quite a bit (about 31%) faster with regards to anisotropic filtering than the Radeon HD 7850. (explain)

Radeon R9 270 72000 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 16960 (31%)

Pixel Rate

The Radeon R9 270 is a little bit (approximately 5%) more effective at AA than the Radeon HD 7850, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 1280 (5%)

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 7850

Amazon.com

Check prices at:

Radeon R9 270

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 7850 Radeon R9 270
Manufacturer AMD AMD
Year March 2012 November 2013
Code Name Pitcairn Pro Curacao Pro
Memory 2048 MB 2048 MB
Core Speed 860 MHz 900 MHz
Memory Speed 4800 MHz 5600 MHz
Power (Max TDP) 130 watts 150 watts
Bandwidth 153600 MB/sec 179200 MB/sec
Texel Rate 55040 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 27520 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 1024 1280
Texture Mapping Units 64 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 2800 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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 7850

Amazon.com

Check prices at:

Radeon R9 270

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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