Radeon HD 7750 vs Radeon R9 290

Intro

Compare all of that to the Radeon R9 290, which features GPU core speed of 800 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 512-bit bus. It also is made up of 2560 SPUs, 160 TAUs, and 64 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 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

The Radeon R9 290 should theoretically perform 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 should be much (more or less 400%) better at anisotropic filtering than the Radeon HD 7750. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 290 is superior to the Radeon HD 7750, by far. (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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units 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 processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.