GeForce GTX 850M vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which has a core clock frequency of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is made up of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation 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 690		13111 points
GeForce GTX 850M		3340 points
	Difference: 9771 (293%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Geforce GTX 690		300 Watts
	Difference: 260 Watts (650%)

Memory Bandwidth

The Geforce GTX 690 should in theory perform quite a bit faster than the GeForce GTX 850M overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 352512 (1102%)

Texel Rate

The Geforce GTX 690 is quite a bit (approximately 568%) faster with regards to anisotropic filtering than the GeForce GTX 850M. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 199200 (568%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 690 is superior to the GeForce GTX 850M, and very much so. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 44544 (318%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.