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Radeon R7 260X vs Radeon R9 390X 8G

Intro

The Radeon R7 260X uses a 28 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 memory works at a frequency of 1625 MHz on this specific model. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Compare all of that to the Radeon R9 390X 8G, which has a core clock speed of 1050 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 512-bit memory bus, and makes use of a 28 nm design. It features 2816 SPUs, 176 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 390X 8G 13555 points
Radeon R7 260X 4381 points
Difference: 9174 (209%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Radeon R7 260X 14 Mh/s
Difference: 18 (129%)

Zcash Mining Hash Rate

Radeon R9 390X 8G 330 Sol/s
Radeon R7 260X 95 Sol/s
Difference: 235 (247%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X 115 Watts
Radeon R9 390X 8G 275 Watts
Difference: 160 Watts (139%)

Memory Bandwidth

In theory, the Radeon R9 390X 8G should perform much faster than the Radeon R7 260X overall. (explain)

Radeon R9 390X 8G 384000 MB/sec
Radeon R7 260X 104000 MB/sec
Difference: 280000 (269%)

Texel Rate

The Radeon R9 390X 8G will be much (more or less 200%) faster with regards to texture filtering than the Radeon R7 260X. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Radeon R7 260X 61600 Mtexels/sec
Difference: 123200 (200%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 390X 8G is the winner, and very much so. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Radeon R7 260X 17600 Mpixels/sec
Difference: 49600 (282%)

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 R7 260X

Amazon.com

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Radeon R9 390X 8G

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 R7 260X Radeon R9 390X 8G
Manufacturer AMD AMD
Year October 2013 June 2015
Code Name Bonaire XTX Grenada XT
Memory 2048 MB 8192 MB
Core Speed 1100 MHz 1050 MHz
Memory Speed 6500 MHz 6000 MHz
Power (Max TDP) 115 watts 275 watts
Bandwidth 104000 MB/sec 384000 MB/sec
Texel Rate 61600 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 17600 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 896 2816
Texture Mapping Units 56 176
Render Output Units 16 64
Bus Type GDDR5 GDDR5
Bus Width 128-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 2080 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon R7 260X

Amazon.com

Check prices at:

Radeon R9 390X 8G

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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