GeForce GTX 870M vs Geforce GTX 690

Intro

Compare all of that to the Geforce GTX 690, which comes with a clock speed of 915 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation 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 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

Theoretically speaking, the Geforce GTX 690 should be 301% faster than the GeForce GTX 870M overall, because of its higher data rate. (explain)

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

Texel Rate

The Geforce GTX 690 is much (approximately 122%) better at AF than the GeForce GTX 870M. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 690 is superior to the GeForce GTX 870M, by far. (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 data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If 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 calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.