Radeon HD 7770 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which uses a 28 nm design. AMD has clocked the core frequency at 970 MHz. The GDDR5 RAM runs at a speed of 1425 MHz on this specific card. It features 1792 SPUs along with 112 Texture Address Units 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

As far as performance goes, the Radeon R9 380 2G should in theory be a lot superior to the Radeon HD 7770 in general. (explain)

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

Texel Rate

The Radeon R9 380 2G is a lot (more or less 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

The Radeon R9 380 2G is much (approximately 94%) better at anti-aliasing than the Radeon HD 7770, and should be able to handle higher resolutions without losing too much performance. (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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.