GeForce GTS 150 vs Radeon HD 6770 1GB

Intro

Compare all that to the Radeon HD 6770 1GB, which uses a 40 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM is set to run at a frequency of 1050 MHz on this card. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
GeForce GTS 150		141 Watts
	Difference: 33 Watts (31%)

Memory Bandwidth

The Radeon HD 6770 1GB, in theory, should perform a lot faster than the GeForce GTS 150 overall. (explain)

Radeon HD 6770 1GB		67200 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 35200 (110%)

Texel Rate

The GeForce GTS 150 will be a lot (about 32%) faster with regards to texture filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 11360 (32%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 1GB is superior to the GeForce GTS 150, by a large margin. (explain)

Radeon HD 6770 1GB		14400 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 2560 (22%)

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 MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 in one second. This number is worked out by multiplying the total texture units of the card 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.