Radeon R9 270X vs Radeon R9 280X

Intro

Compare all of that to the Radeon R9 280X, which features a clock speed of 850 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 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.

3DMark Fire Strike Graphics Score

Radeon R9 280X		8886 points
Radeon R9 270X		6590 points
	Difference: 2296 (35%)

Zcash Mining Hash Rate

Radeon R9 280X		294 Sol/s
Radeon R9 270X		177 Sol/s
	Difference: 117 (66%)

Ethereum Mining Hash Rate

Radeon R9 280X		21 Mh/s
Radeon R9 270X		18 Mh/s
	Difference: 3 (17%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X		180 Watts
Radeon R9 280X		250 Watts
	Difference: 70 Watts (39%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280X should perform a lot faster than the Radeon R9 270X in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon R9 270X		179200 MB/sec
	Difference: 108800 (61%)

Texel Rate

The Radeon R9 280X will be much (approximately 36%) more effective at anisotropic filtering than the Radeon R9 270X. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 28800 (36%)

Pixel Rate

The Radeon R9 270X will be a bit (approximately 18%) faster with regards to AA than the Radeon R9 280X, and should be able to handle higher resolutions more effectively. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 4800 (18%)

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 MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.