GeForce GTX 870M vs Radeon HD 6870

Intro

Compare those specs to the Radeon HD 6870, which has core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs as well as 56 TAUs and 32 Rasterization Operator 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 870M		4770 points
Radeon HD 6870		2870 points
	Difference: 1900 (66%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Radeon HD 6870		151 Watts
	Difference: 41 Watts (37%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6870 should in theory be much better than the GeForce GTX 870M in general. (explain)

Radeon HD 6870		134400 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 38400 (40%)

Texel Rate

The GeForce GTX 870M is much (about 109%) faster with regards to texture filtering than the Radeon HD 6870. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 54992 (109%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6870 is superior to the GeForce GTX 870M, by far. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 6216 (28%)

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: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.