Radeon HD 7950 vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which comes with GPU clock speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 TAUs, 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

The Radeon HD 7950 should in theory perform a lot faster 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 is quite a bit (approximately 24%) more effective at texture filtering than the Radeon R9 270. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 270 is a better choice, but only just. (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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.