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Radeon HD 7850 vs Radeon R9 290


Intro

The Radeon HD 7850 comes with a GPU core clock speed of 860 MHz, and the 2048 MB of GDDR5 memory is set to run at 1200 MHz through a 256-bit bus. It also is comprised of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon R9 290, which has a clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 512-bit memory bus, and uses a 28 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 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 290 9795 points
Radeon HD 7850 5200 points
Difference: 4595 (88%)

Zcash Mining Hash Rate

Radeon R9 290 283 Sol/s
Radeon HD 7850 171 Sol/s
Difference: 112 (65%)

Ethereum Mining Hash Rate

Radeon R9 290 29 Mh/s
Radeon HD 7850 13 Mh/s
Difference: 16 (123%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon R9 290 300 Watts
Difference: 170 Watts (131%)

Memory Bandwidth

Performance-wise, the Radeon R9 290 should in theory be much superior to the Radeon HD 7850 overall. (explain)

Radeon R9 290 320000 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 166400 (108%)

Texel Rate

The Radeon R9 290 should be a lot (about 133%) better at anisotropic filtering than the Radeon HD 7850. (explain)

Radeon R9 290 128000 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 72960 (133%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 290 is a better choice, by far. (explain)

Radeon R9 290 51200 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 23680 (86%)

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

Radeon R9 290

Amazon.com

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 290
Manufacturer AMD AMD
Year March 2012 November 2013
Code Name Pitcairn Pro Hawaii PRO
Memory 2048 MB 4096 MB
Core Speed 860 MHz 800 MHz
Memory Speed 4800 MHz 5000 MHz
Power (Max TDP) 130 watts 300 watts
Bandwidth 153600 MB/sec 320000 MB/sec
Texel Rate 55040 Mtexels/sec 128000 Mtexels/sec
Pixel Rate 27520 Mpixels/sec 51200 Mpixels/sec
Unified Shaders 1024 2560
Texture Mapping Units 64 160
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 6200 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 max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 7850

Amazon.com

Radeon R9 290

Amazon.com

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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