Radeon HD 7750 vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which comes with 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 makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

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 R9 270X		6590 points
Radeon HD 7750		2240 points
	Difference: 4350 (194%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 270X		180 Watts
	Difference: 125 Watts (227%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X will be 149% quicker than the Radeon HD 7750 in general, because of its higher data rate. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270X is a lot (approximately 213%) faster with regards to AF than the Radeon HD 7750. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 54400 (213%)

Pixel Rate

The Radeon R9 270X is quite a bit (more or less 150%) more effective at full screen anti-aliasing than the Radeon HD 7750, and able to handle higher screen resolutions better. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 19200 (150%)

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 largest amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 number of texture map elements (texels) that are applied in one second. This figure 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.