Radeon HD 6770 1GB vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which comes with clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Radeon R9 270X		180 Watts
	Difference: 72 Watts (67%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270X should in theory be quite a bit superior to the Radeon HD 6770 1GB overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 112000 (167%)

Texel Rate

The Radeon R9 270X should be quite a bit (approximately 122%) more effective at texture filtering than the Radeon HD 6770 1GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 44000 (122%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 270X is the winner, by far. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 17600 (122%)

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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.