Radeon HD 6770 1GB vs Radeon RX 460

Intro

Compare that to the Radeon RX 460, which features core speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 33 Watts (44%)

Memory Bandwidth

In theory, the Radeon RX 460 will be 67% quicker than the Radeon HD 6770 1GB in general, because of its higher data rate. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 44800 (67%)

Texel Rate

The Radeon RX 460 should be quite a bit (more or less 70%) more effective at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 25040 (70%)

Pixel Rate

The Radeon RX 460 is quite a bit (about 21%) better at AA than the Radeon HD 6770 1GB, and also able to handle higher resolutions better. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 3040 (21%)

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 MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock 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 most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.