Radeon R9 270 vs Radeon R9 390 8G

Intro

Compare those specifications to the Radeon R9 390 8G, which comes with a GPU core clock speed of 1000 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also features 2560 Stream Processors, 160 Texture Address Units, and 64 ROPs.

Display Graphs

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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 390 8G		12733 points
Radeon R9 270		5943 points
	Difference: 6790 (114%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon R9 270		15 Mh/s
	Difference: 13 (87%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Radeon R9 390 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should in theory be quite a bit better than the Radeon R9 270 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 204800 (114%)

Texel Rate

The Radeon R9 390 8G should be quite a bit (more or less 122%) better at AF than the Radeon R9 270. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 88000 (122%)

Pixel Rate

The Radeon R9 390 8G will be quite a bit (more or less 122%) more effective at AA than the Radeon R9 270, and will be capable of handling higher resolutions more effectively. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 35200 (122%)

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 max amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.