Radeon HD 7950 vs Radeon R9 270X

Intro

Compare all of that to the Radeon R9 270X, which has a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It features 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 270X		6590 points
	Difference: 1141 (17%)

Zcash Mining Hash Rate

Radeon HD 7950		235 Sol/s
Radeon R9 270X		177 Sol/s
	Difference: 58 (33%)

Ethereum Mining Hash Rate

Radeon HD 7950		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 HD 7950		200 Watts
	Difference: 20 Watts (11%)

Memory Bandwidth

The Radeon HD 7950 should in theory perform quite a bit faster than the Radeon R9 270X in general. (explain)

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

Texel Rate

The Radeon HD 7950 will be a small bit (about 12%) faster with regards to texture filtering than the Radeon R9 270X. (explain)

Radeon HD 7950		89600 Mtexels/sec
Radeon R9 270X		80000 Mtexels/sec
	Difference: 9600 (12%)

Pixel Rate

The Radeon R9 270X is a lot (approximately 25%) better at FSAA than the Radeon HD 7950, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 6400 (25%)

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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.