Radeon HD 6770 vs Radeon R9 290

Intro

Compare that to the Radeon R9 290, which uses a 28 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this model. It features 2560 SPUs as well as 160 TAUs and 64 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 290		9876 points
Radeon HD 6770		1520 points
	Difference: 8356 (550%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
Radeon R9 290		300 Watts
	Difference: 192 Watts (178%)

Memory Bandwidth

As far as performance goes, the Radeon R9 290 should in theory be a lot superior to the Radeon HD 6770 overall. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 252800 (376%)

Texel Rate

The Radeon R9 290 will be much (approximately 256%) better at AF than the Radeon HD 6770. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 92000 (256%)

Pixel Rate

The Radeon R9 290 will be much (about 256%) faster with regards to anti-aliasing than the Radeon HD 6770, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 36800 (256%)

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 transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated 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 outputting the pixels (image) to 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.