GeForce GTX 590 vs GeForce GTX 870M

Intro

Compare those specs to the GeForce GTX 870M, which comes with a core clock speed of 941 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 192-bit memory bus, and makes use of a 28 nm design. It is made up of 1344 SPUs, 112 TAUs, and 24 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 590		6680 points
GeForce GTX 870M		4770 points
	Difference: 1910 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
GeForce GTX 590		365 Watts
	Difference: 255 Watts (232%)

Memory Bandwidth

The GeForce GTX 590, in theory, should perform much faster than the GeForce GTX 870M overall. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 232320 (242%)

Texel Rate

The GeForce GTX 870M will be much (more or less 36%) more effective at AF than the GeForce GTX 590. (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce GTX 590		77696 Mtexels/sec
	Difference: 27696 (36%)

Pixel Rate

The GeForce GTX 590 is quite a bit (approximately 158%) more effective at full screen anti-aliasing than the GeForce GTX 870M, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 35688 (158%)

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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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 maximum fill rate.