GeForce 8600 GS (OEM) vs GeForce GTX 870M

Intro

Compare all of that to the GeForce GTX 870M, which has a core clock speed of 941 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 192-bit memory bus, and uses a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM)		47 Watts
GeForce GTX 870M		110 Watts
	Difference: 63 Watts (134%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 870M should theoretically be quite a bit better than the GeForce 8600 GS (OEM) overall. (explain)

GeForce GTX 870M		96000 MB/sec
GeForce 8600 GS (OEM)		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The GeForce GTX 870M should be much (approximately 1120%) better at AF than the GeForce 8600 GS (OEM). (explain)

GeForce GTX 870M		105392 Mtexels/sec
GeForce 8600 GS (OEM)		8640 Mtexels/sec
	Difference: 96752 (1120%)

Pixel Rate

The GeForce GTX 870M should be quite a bit (about 423%) faster with regards to anti-aliasing than the GeForce 8600 GS (OEM), and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 870M		22584 Mpixels/sec
GeForce 8600 GS (OEM)		4320 Mpixels/sec
	Difference: 18264 (423%)

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 max amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.