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Radeon HD 7850 vs Radeon R7 250

Intro

The Radeon HD 7850 has a core clock speed of 860 MHz and a GDDR5 memory frequency of 1200 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon R7 250, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a speed of 1150 MHz on this specific card. It features 384 SPUs as well as 24 Texture Address Units and 8 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 HD 7850 5200 points
Radeon R7 250 1836 points
Difference: 3364 (183%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250 65 Watts
Radeon HD 7850 130 Watts
Difference: 65 Watts (100%)

Memory Bandwidth

In theory, the Radeon HD 7850 will be 109% faster than the Radeon R7 250 in general, due to its greater bandwidth. (explain)

Radeon HD 7850 153600 MB/sec
Radeon R7 250 73600 MB/sec
Difference: 80000 (109%)

Texel Rate

The Radeon HD 7850 will be much (more or less 129%) better at AF than the Radeon R7 250. (explain)

Radeon HD 7850 55040 Mtexels/sec
Radeon R7 250 24000 Mtexels/sec
Difference: 31040 (129%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7850 is the winner, and very much so. (explain)

Radeon HD 7850 27520 Mpixels/sec
Radeon R7 250 8000 Mpixels/sec
Difference: 19520 (244%)

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

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Radeon R7 250

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 R7 250
Manufacturer AMD AMD
Year March 2012 October 2013
Code Name Pitcairn Pro Oland XT
Memory 2048 MB 1024 MB
Core Speed 860 MHz 1000 MHz
Memory Speed 4800 MHz 4600 MHz
Power (Max TDP) 130 watts 65 watts
Bandwidth 153600 MB/sec 73600 MB/sec
Texel Rate 55040 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 27520 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 1024 384
Texture Mapping Units 64 24
Render Output Units 32 8
Bus Type GDDR5 GDDR5
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 maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon HD 7850

Amazon.com

Check prices at:

Radeon R7 250

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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