Radeon HD 7750 vs Radeon HD 7790

Intro

Compare those specifications to the Radeon HD 7790, which features a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 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 HD 7790		4330 points
Radeon HD 7750		2240 points
	Difference: 2090 (93%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 7790		85 Watts
	Difference: 30 Watts (55%)

Memory Bandwidth

In theory, the Radeon HD 7790 is 33% quicker than the Radeon HD 7750 in general, because of its higher data rate. (explain)

Radeon HD 7790		96000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The Radeon HD 7790 should be a lot (approximately 119%) faster with regards to AF than the Radeon HD 7750. (explain)

Radeon HD 7790		56000 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 30400 (119%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7790 is superior to the Radeon HD 7750, and very much so. (explain)

Radeon HD 7790		16000 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 3200 (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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.