Radeon HD 7770 vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which comes with a GPU core clock speed of 970 MHz, and 4096 MB of GDDR5 RAM running at 1425 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 380X		9519 points
Radeon HD 7770		3180 points
	Difference: 6339 (199%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon R9 380X should in theory be much better than the Radeon HD 7770 overall. (explain)

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

Texel Rate

The Radeon R9 380X is a lot (approximately 210%) more effective at AF than the Radeon HD 7770. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 84160 (210%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 380X is a better choice, by far. (explain)

Radeon R9 380X		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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.