GeForce GTS 150 vs Radeon HD 6770

Intro

Compare those specs to the Radeon HD 6770, which features GPU clock speed of 900 MHz, and 512 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also is made up of 800 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon HD 6770 should in theory be quite a bit superior to the GeForce GTS 150 overall. (explain)

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

Texel Rate

The GeForce GTS 150 will be much (about 32%) more effective at AF than the Radeon HD 6770. (explain)

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

Pixel Rate

The Radeon HD 6770 should be much (approximately 22%) faster with regards to AA than the GeForce GTS 150, and also capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6770		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: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.