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Radeon R7 370 4G vs Radeon R9 390 8G

Intro

The Radeon R7 370 4G comes with clock speeds of 975 MHz on the GPU, and 1400 MHz on the 4096 MB of GDDR5 RAM. It features 1024 SPUs along with 64 TAUs and 32 ROPs.

Compare those specs to the Radeon R9 390 8G, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this model. It features 2560 SPUs along with 160 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 390 8G 326 Sol/s
Radeon R7 370 4G 183 Sol/s
Difference: 143 (78%)

Ethereum Mining Hash Rate

Radeon R9 390 8G 28 Mh/s
Radeon R7 370 4G 17 Mh/s
Difference: 11 (65%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The Radeon R9 390 8G should be quite a bit (more or less 156%) better at texture filtering than the Radeon R7 370 4G. (explain)

Radeon R9 390 8G 160000 Mtexels/sec
Radeon R7 370 4G 62400 Mtexels/sec
Difference: 97600 (156%)

Pixel Rate

The Radeon R9 390 8G will be much (more or less 105%) more effective at anti-aliasing than the Radeon R7 370 4G, and also should be able to handle higher screen resolutions better. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
Radeon R7 370 4G 31200 Mpixels/sec
Difference: 32800 (105%)

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 390 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 390 8G
Manufacturer AMD AMD
Year June 2015 June 2015
Code Name Trinidad Grenada PRO
Memory 4096 MB 8192 MB
Core Speed 975 MHz 1000 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 160000 Mtexels/sec
Pixel Rate 31200 Mpixels/sec 64000 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 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 largest amount of information (counted in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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

Display Prices

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Radeon R7 370 4G

Amazon.com

Check prices at:

Radeon R9 390 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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