GeForce GTX 870M vs Radeon HD 6850

Intro

Compare all of that to the Radeon HD 6850, which has core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 960 SPUs as well as 48 TAUs and 32 ROPs.

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 6850		2395 points
	Difference: 2375 (99%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
Radeon HD 6850		127 Watts
	Difference: 17 Watts (15%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6850 should be quite a bit faster than the GeForce GTX 870M in general. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 32000 (33%)

Texel Rate

The GeForce GTX 870M should be much (about 183%) more effective at AF than the Radeon HD 6850. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 68192 (183%)

Pixel Rate

The Radeon HD 6850 will be just a bit (approximately 10%) faster with regards to FSAA than the GeForce GTX 870M, and able to handle higher screen resolutions better. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 2216 (10%)

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 maximum amount of information (measured in MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated 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 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 maximum fill rate.