Radeon R9 270X vs Radeon R9 280X

Intro

Compare those specifications to the Radeon R9 280X, which uses a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 memory works at a speed of 1500 MHz on this particular model. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator 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

In theory, the Radeon R9 280X is 61% quicker than the Radeon R9 270X overall, due to its higher bandwidth. (explain)

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

Texel Rate

The Radeon R9 280X should be a lot (about 36%) better 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 should be a small bit (approximately 18%) more effective at full screen anti-aliasing than the Radeon R9 280X, and capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.