GeForce GTX 960 vs Radeon HD 6770 1GB

Intro

Compare that to the Radeon HD 6770 1GB, which features core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTX 960		120 Watts
	Difference: 12 Watts (11%)

Memory Bandwidth

In theory, the GeForce GTX 960 is 67% faster than the Radeon HD 6770 1GB in general, due to its higher data rate. (explain)

GeForce GTX 960		112000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 44800 (67%)

Texel Rate

The GeForce GTX 960 should be quite a bit (approximately 100%) more effective at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 960		72128 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 36128 (100%)

Pixel Rate

The GeForce GTX 960 is much (more or less 150%) better at FSAA than the Radeon HD 6770 1GB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 960		36064 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 21664 (150%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most 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 number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.