Radeon HD 7750 vs Radeon R9 290

Intro

Compare that to the Radeon R9 290, which makes use of a 28 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this particular model. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator 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 290		9876 points
Radeon HD 7750		2240 points
	Difference: 7636 (341%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 290		300 Watts
	Difference: 245 Watts (445%)

Memory Bandwidth

In theory, the Radeon R9 290 should be much faster than the Radeon HD 7750 in general. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 248000 (344%)

Texel Rate

The Radeon R9 290 will be much (about 400%) better at AF than the Radeon HD 7750. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 102400 (400%)

Pixel Rate

The Radeon R9 290 should be much (approximately 300%) better at AA than the Radeon HD 7750, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 38400 (300%)

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 MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the 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 number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.