GeForce GTX 880M vs Radeon HD 6870

Intro

Compare those specifications to the Radeon HD 6870, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 1120 SPUs as well as 56 Texture Address Units 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 880M		6360 points
Radeon HD 6870		2870 points
	Difference: 3490 (122%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 6870		151 Watts
	Difference: 21 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6870 is 5% faster than the GeForce GTX 880M in general, due to its greater data rate. (explain)

Radeon HD 6870		134400 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 6400 (5%)

Texel Rate

The GeForce GTX 880M will be quite a bit (more or less 142%) faster with regards to texture filtering than the Radeon HD 6870. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 71712 (142%)

Pixel Rate

The GeForce GTX 880M should be a little bit (more or less 6%) more effective at full screen anti-aliasing than the Radeon HD 6870, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 6870		28800 Mpixels/sec
	Difference: 1728 (6%)

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 data (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.