GeForce GTX 965M vs Radeon HD 6770 1GB

Intro

Compare all of that to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory runs at a frequency of 1050 MHz on this particular model. It features 800 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6770 1GB should be a bit faster than the GeForce GTX 965M in general. (explain)

Radeon HD 6770 1GB		67200 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTX 965M should be a lot (approximately 68%) better at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 24416 (68%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 965M is the winner, by a large margin. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 15808 (110%)

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 information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video 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 maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.