Geforce GTX 670 vs Radeon HD 6770 1GB

Intro

Compare those specs to the Radeon HD 6770 1GB, which comes with GPU clock speed of 900 MHz, and 1024 MB of GDDR5 memory set to run at 1050 MHz through a 128-bit bus. It also is comprised of 800 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Geforce GTX 670		170 Watts
	Difference: 62 Watts (57%)

Memory Bandwidth

Performance-wise, the Geforce GTX 670 should in theory be much superior to the Radeon HD 6770 1GB in general. (explain)

Geforce GTX 670		192000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 124800 (186%)

Texel Rate

The Geforce GTX 670 will be a lot (approximately 185%) better at texture filtering than the Radeon HD 6770 1GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 66480 (185%)

Pixel Rate

The Geforce GTX 670 is a lot (more or less 103%) more effective at anti-aliasing than the Radeon HD 6770 1GB, and also will be capable of handling higher screen resolutions while still performing well. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 14880 (103%)

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 (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses 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 can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the 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 most pixels that the graphics card could 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 speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.