Radeon HD 6770 vs Radeon R9 290

Intro

Compare those specs to the Radeon R9 290, which has GPU core speed of 800 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 512-bit bus. It also is made up of 2560 SPUs, 160 TAUs, and 64 Raster Operation Units.

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 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

The Radeon R9 290 should theoretically be much faster than the Radeon HD 6770 in general. (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%) faster with regards to anisotropic filtering 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 should be quite a bit (about 256%) more effective at AA than the Radeon HD 6770, and also will be capable of handling higher resolutions without slowing down too much. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.