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Radeon HD 7850 vs Radeon R9 290


Intro

The Radeon HD 7850 features a GPU clock 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 Stream Processors, 64 TAUs, and 32 ROPs.

Compare all that to the Radeon R9 290, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 TAUs and 64 ROPs.

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 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

In theory, the Radeon R9 290 is 108% faster than the Radeon HD 7850 in general, due to its higher data rate. (explain)

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

Texel Rate

The Radeon R9 290 will be much (more or less 133%) faster with regards to 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 a high screen resolution is important to you, then the Radeon R9 290 is superior to the Radeon HD 7850, and very much so. (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

Radeon HD 7850

Radeon R9 290

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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Radeon HD 7850

Radeon R9 290

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