Radeon HD 7950 vs Radeon R9 270

Intro

Compare all that to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1400 MHz on this model. It features 1280 SPUs along with 80 Texture Address Units and 32 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 HD 7950		7731 points
Radeon R9 270		5943 points
	Difference: 1788 (30%)

Ethereum Mining Hash Rate

Radeon HD 7950		21 Mh/s
Radeon R9 270		15 Mh/s
	Difference: 6 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
Radeon HD 7950		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 should theoretically be a lot better than the Radeon R9 270 in general. (explain)

Radeon HD 7950		240000 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 60800 (34%)

Texel Rate

The Radeon HD 7950 should be quite a bit (more or less 24%) faster with regards to anisotropic filtering than the Radeon R9 270. (explain)

Radeon HD 7950		89600 Mtexels/sec
Radeon R9 270		72000 Mtexels/sec
	Difference: 17600 (24%)

Pixel Rate

The Radeon R9 270 is just a bit (about 13%) better at anti-aliasing than the Radeon HD 7950, and also capable of handling higher resolutions more effectively. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 3200 (13%)

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

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of 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.