Radeon HD 7770 vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which uses a 28 nm design. AMD has clocked the core speed at 970 MHz. The GDDR5 RAM runs at a frequency of 1425 MHz on this specific model. It features 1792 SPUs as well as 112 TAUs and 32 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

Radeon R9 380 2G		8850 points
Radeon HD 7770		3180 points
	Difference: 5670 (178%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
Radeon R9 380 2G		190 Watts
	Difference: 110 Watts (138%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should perform quite a bit faster than the Radeon HD 7770 overall. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 110400 (153%)

Texel Rate

The Radeon R9 380 2G should be much (approximately 172%) faster with regards to texture filtering than the Radeon HD 7770. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 68640 (172%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 380 2G is a better choice, by far. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 15040 (94%)

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 (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.