GeForce GTX 660 vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which comes with core speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 670		7351 points
GeForce GTX 660		5063 points
	Difference: 2288 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
Geforce GTX 670		170 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 670 should theoretically be quite a bit better than the GeForce GTX 660 in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 47808 (33%)

Texel Rate

The Geforce GTX 670 should be quite a bit (approximately 31%) faster with regards to texture filtering than the GeForce GTX 660. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 660		78400 Mtexels/sec
	Difference: 24080 (31%)

Pixel Rate

The Geforce GTX 670 is a lot (more or less 24%) faster with regards to full screen anti-aliasing than the GeForce GTX 660, and also will be able to handle higher resolutions without losing too much performance. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 5760 (24%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number 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 amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.