Radeon R7 370 4G vs Radeon R9 390 8G

Intro

Compare that to the Radeon R9 390 8G, which has a clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 512-bit memory bus, and makes use of a 28 nm design. It features 2560 SPUs, 160 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

Hide Graphs

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

The Radeon R9 390 8G, in theory, should be 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 will be a lot (about 156%) more effective at AF 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

If running with high levels of AA is important to you, then the Radeon R9 390 8G is the winner, and very much so. (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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.