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Radeon HD 7850 vs Radeon R9 270

Intro

The Radeon HD 7850 has a GPU core speed of 860 MHz, and the 2048 MB of GDDR5 RAM runs at 1200 MHz through a 256-bit bus. It also is made up of 1024 SPUs, 64 TAUs, and 32 ROPs.

Compare those specifications to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1400 MHz on this particular model. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

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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

The Radeon R9 270, in theory, should perform a bit faster than 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 much (about 31%) better at 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 small bit (more or less 5%) more effective at full screen anti-aliasing than the Radeon HD 7850, and should be able to handle 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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum 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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