Radeon HD 6770 vs Radeon R9 380X

Intro

Compare that to the Radeon R9 380X, which uses a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 memory runs at a frequency of 1425 MHz on this card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

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 6770		1520 points
	Difference: 7999 (526%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
Radeon R9 380X		190 Watts
	Difference: 82 Watts (76%)

Memory Bandwidth

Theoretically, the Radeon R9 380X should be quite a bit faster than the Radeon HD 6770 in general. (explain)

Radeon R9 380X		182400 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 115200 (171%)

Texel Rate

The Radeon R9 380X is a lot (more or less 245%) better at AF than the Radeon HD 6770. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 88160 (245%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 380X is the winner, and very much so. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 16640 (116%)

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 moved across the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the 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 maximum amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.