GeForce GTX 1080 vs Radeon HD 7770

Intro

Compare those specifications to the Radeon HD 7770, which features GPU core speed of 1000 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 TAUs, and 16 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

GeForce GTX 1080		21942 points
Radeon HD 7770		3180 points
	Difference: 18762 (590%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 1080		180 Watts
	Difference: 100 Watts (125%)

Memory Bandwidth

In theory, the GeForce GTX 1080 should be a lot faster than the Radeon HD 7770 in general. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 255680 (355%)

Texel Rate

The GeForce GTX 1080 should be a lot (more or less 543%) more effective at anisotropic filtering than the Radeon HD 7770. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 217120 (543%)

Pixel Rate

The GeForce GTX 1080 is a lot (more or less 543%) faster with regards to anti-aliasing than the Radeon HD 7770, and also will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 86848 (543%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.