GeForce GTX 870M vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which comes with core speeds of 915 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 Texture Address Units and 32 ROPs.

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 870M		4770 points
	Difference: 8341 (175%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Geforce GTX 690		300 Watts
	Difference: 190 Watts (173%)

Memory Bandwidth

The Geforce GTX 690 should theoretically be much faster than the GeForce GTX 870M overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 288512 (301%)

Texel Rate

The Geforce GTX 690 should be a lot (about 122%) better at anisotropic filtering than the GeForce GTX 870M. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 128848 (122%)

Pixel Rate

The Geforce GTX 690 should be a lot (about 159%) better at FSAA than the GeForce GTX 870M, and capable of handling higher resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 35976 (159%)

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: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 applied per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the max fill rate.