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Radeon R7 370 4G vs Radeon R9 M390X

Intro

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

Compare all that to the Radeon R9 M390X, which comes with a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G 110 Watts
Radeon R9 M390X 125 Watts
Difference: 15 Watts (14%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G is 12% quicker than the Radeon R9 M390X overall, because of its higher data rate. (explain)

Radeon R7 370 4G 179200 MB/sec
Radeon R9 M390X 160000 MB/sec
Difference: 19200 (12%)

Texel Rate

The Radeon R9 M390X will be quite a bit (more or less 48%) more effective at anisotropic filtering than the Radeon R7 370 4G. (explain)

Radeon R9 M390X 92544 Mtexels/sec
Radeon R7 370 4G 62400 Mtexels/sec
Difference: 30144 (48%)

Pixel Rate

The Radeon R7 370 4G should be much (about 35%) more effective at FSAA than the Radeon R9 M390X, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R7 370 4G 31200 Mpixels/sec
Radeon R9 M390X 23136 Mpixels/sec
Difference: 8064 (35%)

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

Check prices at:

Radeon R9 M390X

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 370 4G Radeon R9 M390X
Manufacturer AMD AMD
Year June 2015 2015
Code Name Trinidad Tonga
Memory 4096 MB 4096 MB
Core Speed 975 MHz 723 MHz
Memory Speed 5600 MHz 5000 MHz
Power (Max TDP) 110 watts 125 watts
Bandwidth 179200 MB/sec 160000 MB/sec
Texel Rate 62400 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 31200 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1024 2048
Texture Mapping Units 64 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2080 million (Unknown) million
Bus PCIe 3.0 ×16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon R7 370 4G

Amazon.com

Check prices at:

Radeon R9 M390X

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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