Radeon R9 270 vs Radeon R9 390X 8G

Intro

Compare those specs to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has set the core frequency at 1050 MHz. The GDDR5 memory works at a speed of 1500 MHz on this particular model. It features 2816 SPUs as well as 176 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 390X 8G		13555 points
Radeon R9 270		5943 points
	Difference: 7612 (128%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon R9 270		15 Mh/s
	Difference: 17 (113%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon R9 390X 8G is 114% quicker than the Radeon R9 270 overall, because of its higher data rate. (explain)

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

Texel Rate

The Radeon R9 390X 8G will be much (about 157%) faster with regards to texture filtering than the Radeon R9 270. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 112800 (157%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390X 8G is superior to the Radeon R9 270, by far. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 38400 (133%)

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: Bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 can be processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number 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 outputting the pixels (image) to the screen. 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 ability to get to the max fill rate.