GeForce GTX 850M vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this card. It features 1344 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 850M		3340 points
	Difference: 4011 (120%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Geforce GTX 670		170 Watts
	Difference: 130 Watts (325%)

Memory Bandwidth

In theory, the Geforce GTX 670 will be 500% faster than the GeForce GTX 850M in general, due to its greater data rate. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 160000 (500%)

Texel Rate

The Geforce GTX 670 will be a lot (more or less 192%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 67440 (192%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 670 is the winner, by a large margin. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 15264 (109%)

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 (in units of MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.