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Radeon R7 370 4G vs Radeon R9 390X 8G

Intro

The Radeon R7 370 4G comes with a clock frequency of 975 MHz and a GDDR5 memory speed of 1400 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It features 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has set the core speed at 1050 MHz. The GDDR5 memory runs at a frequency of 1500 MHz on this model. It features 2816 SPUs along with 176 TAUs and 64 Rasterization Operator Units.

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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.

Zcash Mining Hash Rate

Radeon R9 390X 8G 330 Sol/s
Radeon R7 370 4G 183 Sol/s
Difference: 147 (80%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Radeon R7 370 4G 17 Mh/s
Difference: 15 (88%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G 110 Watts
Radeon R9 390X 8G 275 Watts
Difference: 165 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G should perform a lot faster than the Radeon R7 370 4G overall. (explain)

Radeon R9 390X 8G 384000 MB/sec
Radeon R7 370 4G 179200 MB/sec
Difference: 204800 (114%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (approximately 196%) more effective at texture filtering than the Radeon R7 370 4G. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Radeon R7 370 4G 62400 Mtexels/sec
Difference: 122400 (196%)

Pixel Rate

The Radeon R9 390X 8G is much (about 115%) better at full screen anti-aliasing than the Radeon R7 370 4G, and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Radeon R7 370 4G 31200 Mpixels/sec
Difference: 36000 (115%)

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 370 4G

Amazon.com

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Radeon R9 390X 8G

Amazon.com

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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 370 4G Radeon R9 390X 8G
Manufacturer AMD AMD
Year June 2015 June 2015
Code Name Trinidad Grenada XT
Memory 4096 MB 8192 MB
Core Speed 975 MHz 1050 MHz
Memory Speed 5600 MHz 6000 MHz
Power (Max TDP) 110 watts 275 watts
Bandwidth 179200 MB/sec 384000 MB/sec
Texel Rate 62400 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 31200 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 1024 2816
Texture Mapping Units 64 176
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 2080 million 6200 million
Bus PCIe 3.0 ×16 PCIe 3.0 ×16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher 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 maximum amount of pixels the graphics card could possibly record to the local memory in one 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 speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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Radeon R7 370 4G

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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